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Dissertations / Theses on the topic 'Circular dichroism'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Schmid, Marco. "Conformational dynamics of G-quadruplex DNA probed by time-resolved circular dichroism." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX107/document.

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Les quadruplexes de guanines (G4) sont des structures d’ADN non-canoniques qui résultent de l’empilement hydrophobe de tétrades de guanines, stabilisé par des cations métalliques (tels que Na+ et K+). Il existe aujourd’hui un nombre croissant de preuves expérimentales qui attestent de l’implication des G4 dans d’importantes fonctions cellulaires corrélées à leur mécanisme de repliement/dépliement. Toutefois, très peu d’études ont abordé les aspects dynamiques de leur formation. Aussi, nous avons entrepris l’étude de plusieurs G4 mono-moléculaires à l’aide d’une nouvelle extension d’expériences

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2

Bulheller, Benjamin M. "Circular and linear dichroism spectroscopy of proteins." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/10866/.

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Circular dichroism (CD) is an important technique in the structural characterization of proteins, and especially for secondary structure determination. The CD of proteins can be calculated from first principles using the matrix method, with an accuracy that is almost quantitative for helical proteins. Thus, for proteins of unknown structure, CD calculations and experimental data can be used in conjunction to aid structure analysis. The vacuum-UV region (below 190 nm), where charge-transfer transitions have an influence on the CD spectra, can be accessed using synchrotron radiation circular dic

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3

Lees, Jonathan Gill. "Circular dichroism spectroscopy : informatics and new methodologies." Thesis, Birkbeck (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413799.

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4

Miles, Andrew John. "Synchrotron radiation circular dichroism : standardisation and new methods." Thesis, Birkbeck (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428084.

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5

George, S. J. "Magnetic circular dichroism studies of iron-sulphur proteins." Thesis, University of East Anglia, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376059.

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6

Harding, Christopher John. "Photoelectron circular dichroism in gas phase chiral molecules." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430538.

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7

McCann, Jennifer L. "A vibrational circular dichroism study of optically active polymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34685.pdf.

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8

Orry, Andrew John Wooldridge. "Molecular modelling and circular dichroism studies of membrane proteins." Thesis, Birkbeck (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248128.

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On the basis of preliminary infonnation from genome projects it has been estimated that approximately 10000 different membrane proteins could exist in the human being. A membrane protein of some description is involved in nearly every biochemical pathway, therefore knowledge of their structure is essential for detennination of function and for rational drug design. Membrane proteins are extremely hard to crystallize due to their amphipathic nature and therefore we explore other structural detennination methods in order to gain infonnation about membrane proteins. These methods are, membrane pr

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9

Dang, Zhijing. "Theoretical studies of protein folding and circular dichroism spectroscopy." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406982.

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10

Saha, Supriya. "Circular dichroism and exotic pairing in heavy fermion superconductors." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358031.

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11

Hewson, Daniel James. "Iridescence and circular dichroism in cellulose nanocrystal thin films." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/32480.

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Only in recent times has the true potential of cellulose as a high-end functional and sustainable material been realised. As the world’s most abundant resource cellulose has been utilised by man throughout history for timber, paper and yarns. It is found in every plant as a hierarchical material and can be extracted and converted into fibres which are of great use, especially in the form of nanofibrous materials. This thesis has focused on the utilisation and ability of cellulose nanocrystals (CNCs) to generate structural colour in fabricated thin films. This has been achieved in two ways: Fir

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12

Li, Zhuo. "Theoretical study of the circular dichroism spectroscopy of proteins." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/49128/.

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Circular dichroism (CD) spectroscopy is an important technique in studying protein structure, especially for protein secondary structures and conformational changes during biological processes. A fully quantitative theory of the relationship between protein conformation and optical spectroscopy would facilitate deeper interpretation and insight into biophysical and simulation studies of protein dynamics and folding. Vibrational structure in the electronic CD spectra of proteins is an important source of information on protein conformation and can be exploited to study structure and folding. We

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13

Bouldi, Nadejda. "Theory of X-ray circular dichroism and application to materials under pressure." Electronic Thesis or Diss., Paris 6, 2017. http://www.theses.fr/2017PA066491.

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Le but principal de cette thèse était de calculer les spectres de dichroïsme circulaire magnétique de rayons~X au seuil K afin de fournir un outil pour interpréter les spectres expérimentaux, jusqu'ici très déroutants. La détermination du dichroïsme circulaire nécessite le calcul précis des spectres d'absorption des rayons~X polarisés circulairement. Nous avons constaté que la théorie des perturbations semi-classique dépendante du temps, communément utilisée pour calculer les sections efficaces d'absorption et de diffusion, est incompatible à la fois, avec l'invariance de jauge et avec les des

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14

Evans, Paul James. "Circular dichroism spectroscopy studies of the eye lens crystallin proteins." Thesis, Birkbeck (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437767.

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Circular dichroism spectroscopy is an established technique that is frequently used in the analysis of the confonnation of biological molecules. It has previously been reported that the deconvolution of circular dichroism spectra of vertebrate eye lens P'rcrystallin proteins gives exceptionally poor results, and that these spectra are heavily influenced by aromatic contributions in the far-ultraviolet. This thesis describes work undertaken to assess to what extent circular dichroism spectra of py-crystallins can be rationalised in tenus of secondary structure, and to determine if circular dich

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15

Bingham, Stephen John. "Magnetic circular dichroism and electron paramagnetic resonance of transition ions." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357179.

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16

Short, Geoffrey. "Study of magnetic anisotropy by Magnetic Circular X-ray Dichroism." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310961.

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17

Warner, Jeffrey A. (Jeffrey Andrew) Carleton University Dissertation Chemistry. "Detection of metalloporphyrins in crude petroleum using magnetic circular dichroism." Ottawa, 1992.

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18

Bouldi, Nadejda. "Theory of X-ray circular dichroism and application to materials under pressure." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066491/document.

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Le but principal de cette thèse était de calculer les spectres de dichroïsme circulaire magnétique de rayons~X au seuil K afin de fournir un outil pour interpréter les spectres expérimentaux, jusqu'ici très déroutants. La détermination du dichroïsme circulaire nécessite le calcul précis des spectres d'absorption des rayons~X polarisés circulairement. Nous avons constaté que la théorie des perturbations semi-classique dépendante du temps, communément utilisée pour calculer les sections efficaces d'absorption et de diffusion, est incompatible à la fois, avec l'invariance de jauge et avec les des

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19

Vicente, Eduardo Festozo [UNESP]. "Uso de peptideos sintéticos no estudo da proteína diidrooratato desidrogenase humana (HsDHODH)." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/100730.

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20

Vicente, Eduardo Festozo. "Uso de peptideos sintéticos no estudo da proteína diidrooratato desidrogenase humana (HsDHODH) /." Araraquara, 2013. http://hdl.handle.net/11449/100730.

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Orientador: Eduardo Maffud Cilli<br>Banca: José Roberto Ernandes<br>Banca: Patricia Targon Campana<br>Banca: Antonio José da Costa Filho<br>Banca: Vani Xavier de Oliveira Junior<br>Resumo: A diidroorotato desidrogenase é uma enzima que apresenta um papel central na biossíntese de pirimidinas e catalisa a oxidação do diidroorotato a orotato. A enzima atua durante a via "de novo" de síntese de pirimidinas e está presente em quase todos os organismos vivos. A diidroorotato desidrogenase humana (HsDHODH) pode representar um importante alvo para o tratamento de doenças hiperproliferativas e inflama

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21

Ellzy, Michael Wayne Kay Jack G. "Computational and experimental studies using absorption spectroscopy and vibrational circular dichroism /." Philadelphia, Pa. : Drexel University, 2006. http://hdl.handle.net/1860/1158.

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22

Zhao, Taiping Nafie Laurence A. Freedman Teresa B. "Near-infrared vibrational circular dichroism of polypeptides and small pharmaceutical molecules." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2004. http://wwwlib.umi.com/cr/syr/main.

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23

Maharaj, Vanitha. "A vibrational circular dichroism study of deoxyoctanucleotides and their daunorubicin complexes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq20751.pdf.

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24

Schneider, Claus M., Daniel E. Bürgler, Peter M. Oppeneer, et al. "Quantitative characterization of nanoscale polycrystalline magnets with electron magnetic circular dichroism." nature publishing group, 2014. http://hdl.handle.net/2237/20835.

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25

Garcia-Macias, Gustavo Adolfo. "Molecular photoionisation using synchrotron radiation : photoelectron photoion coincidence and circular dichroism." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251988.

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26

Agrenius, Gustafsson Thomas. "A quantum chemical study of electronic circular dichroism in alanine oligopeptides." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231763.

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Circular dichroism (CD) spectroscopy, exploiting the wavelength-dependentdifferential absorption of left- and right-handed circularly polarized light, isa popular method of protein characterization. Theoretically computed CDspectra from quantum mechanical computer models of peptides can widen theapplicability of the method. In this work, the usefulness of Time-DependentDensity Functional Theory (TD-DFT) with the CAM-B3LYP functional and6-31+G(d) basis set in obtaining CD spectra of model alanine α-helices 3to 15 residues long is investigated. It is found that including 10 excitedstates per re

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27

Yang, Lin. "Interaction of molecules and helical nanoparticles characterized by electronic circular dichroism." HKBU Institutional Repository, 2018. https://repository.hkbu.edu.hk/etd_oa/523.

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It is of fundamental significance to differentiate an enantiomer from its mirror image (i.e., enantiodifferentiation), through monitoring optical activity (OA) of enantiomers that is typically characterized by electronic circular dichroism (ECD or CD) in the UV-visible region. However, sub-wavelength molecular dimensions substantially prevent enantiomers from effectively perceiving the different circular polarization states, leading to low enantiomeric OA and weak enantiodifferentiation. Some approaches have been developed to amplify the enantiomeric OA; alternatively, on the basis of the emer

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28

Heavner, Sue Ellen. "Molecular modeling and experimental determination of the structure of C8-arylguanine modified oligonucleotides that preferentially adopt the Z-DNA conformation." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3366.

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Thesis (Ph. D.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xv, 190 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 153-180).

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29

Singer, R. "Matrix induced effects in the MCD spectra of isolated metal atoms." Thesis, University of East Anglia, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374272.

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30

Deng, Junhong. "Numerical and analytical studies of ciricular dichroism of plasmonic nanospirals generated by glancing angle deposition /Deng Junhong." HKBU Institutional Repository, 2017. http://repository.hkbu.edu.hk/etd_oa/345.

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As emerging chiral metamaterials, plasmonic nanospirals (NSs) show strong optical activity that is expected to enhance the enantiodiscrimination of chiral molecules or help in the design of a new generation of integrated optical devices. The study of the optical activity of plasmonic NSs is still in its infancy, and no analytical model exists to describe their chiroptical mechanism. In this study, numerical and analytical simulations are devised to investigate the optical activity of plasmonic NSs that are generated by glancing-angle deposition. The findings will pave the way for the developme

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31

Gonçales, Garcia Luana [UNESP]. "Biologia estrutural: expressão e caracterização estrutural da proteína 25K do Cole latent virus." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/94849.

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Made available in DSpace on 2014-06-11T19:27:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-13Bitstream added on 2014-06-13T20:56:17Z : No. of bitstreams: 1 goncalesgarcia_l_me_sjrp.pdf: 353281 bytes, checksum: 6786716aa7970dd6c603e25cad2d5709 (MD5)<br>As atividades realizadas compreenderam a produção de cDNA utilizando primer anti-senso e RNA purificado, amplificação do gene codificador da proteína 25K do Cole latent virus (CoLV25K), purificação do fragmento amplificado, ligação em vetor de multiplicação pGEM-T, transformação em células competentes de Escherichia coli linhagem

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32

Lim, Yee Chee. "Ultraviolet absorbance and circular dichroism analysis of DNA oligomers containing adenine tracts." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31762.

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"A-tract" is defined as phased runs of at least four consecutive adenines, i.e. (dA)n-(dT)n , where n ≥ 4. The B*-form of DNA characteristic of A-tracts is distinct from the canonical B-DNA, with high base propeller twist and a narrower minor groove. The B*-form of DNA was examined using UV absorption and circular dichroism (CD) spectroscopy in order to estimate the extent of B*-type conformation adopted by 12-mer DNA oligomers containing different A-tract lengths. The systematic variation aims to study how the propensity towards B*-DNA formation depends on different A-tract lengths and

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33

Lambert, Karen A. "Solution studies of soybean protein isolate using circular dichroism and SDS-PAGE." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/9495.

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34

Gonçales, Garcia Luana. "Biologia estrutural: expressão e caracterização estrutural da proteína 25K do Cole latent virus /." São José do Rio Preto : [s.n.], 2012. http://hdl.handle.net/11449/94849.

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Orientador: Raghuvir Krishnaswamy Arni<br>Coorientador: José Osmar Gaspar<br>Banca: Marcelo Andrés Fossey<br>Banca: Priscila Belintani<br>Resumo: As atividades realizadas compreenderam a produção de cDNA utilizando primer anti-senso e RNA purificado, amplificação do gene codificador da proteína 25K do Cole latent virus (CoLV25K), purificação do fragmento amplificado, ligação em vetor de multiplicação pGEM-T, transformação em células competentes de Escherichia coli linhagem TOP 10, purificação do vetor, digestão enzimática com as enzimas Bam HI e Hind III, subclonagem no vetor de expressão pET2

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35

Ernst, Margot Christiana. "Ab initio calculations on chiral cobalt (III) complexes." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/27429.

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36

Daly, Steven. "Study of the photoionization of chiral molecules using polarized VUV radiation." Thesis, University of Nottingham, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.594763.

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37

McHarg, Jane. "Investigations into the glycolytic enzyme phosphoglycerate kinase." Thesis, University of Exeter, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390169.

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38

Miedzinska, K. M. E. (Katarzyna Malgorzata Ewa) Carleton University Dissertation Chemistry. "A dynamic ensemble model for intensity parameters in chiroelectronic spectroscopy." Ottawa, 1992.

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39

Deng, Yuanyuan, and 邓远源. "Magnetic circular dichroism and Hall measurement of cobalt-doped zinc oxide thin films." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B50434494.

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The observation of ferromagnetism of (Ga,Mn)As by Ohno in 1998 has inspired great interest in diluted magnetic semiconductors (DMS). DMS’s features combining ferromagnetism and semiconducting make them of great potential for conceptual spintronic devices, which is a promising field of research for the emerging electronics. The practical application of DMS requires a Curie temperature well above room temperature and an intrinsic ferromagnetism. There are several types of DMS materials. The typical ones are transition-metal (TM) doped GaAs, GaN and ZnO. The TM-doped ZnO has drawn particular att

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40

Jiemchooroj, Auayporn. "Long-range intermolecular dispersion forces and circular dichroism spectra from first-principles calculations." Doctoral thesis, Linköping : Department of Physics, Chemistry and Biology, Linköpings universitet, 2007. http://www.bibl.liu.se/liupubl/disp/disp2007/tek1118s.pdf.

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41

Wadley, Peter. "X-ray magnetic circular dichroism studies of III-Mn-V compounds and heterostructures." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/13451/.

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This thesis describes the characterisation of GaMnAs, related compounds and heterostructures. GaMnAs and other (III,Mn)V compounds have provided many interesting insights into fundamental physics, and are of considerable potential interest commercially in the field of spintronics. This study examines a set of samples grown by molecular beam epitaxy and characterised using several techniques: primarily this study makes use of the x-ray absorption techniques, x-ray magnetic circular dichroism(XMCD) and x-ray absorption spectroscopy (XAS). In addition, x-ray diffraction (XRD), transport measureme

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42

Ledger, G. "X-ray magnetic circular dichroism and scanning tunnelling microscopy applied to molecular spintronics." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3010415/.

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43

Tran, Duc-Thanh. "Novel aspects of topological insulators: Quasi-crystals, Floquet-engineered states and circular dichroism." Doctoral thesis, Universite Libre de Bruxelles, 2018. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/273410.

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Cette thèse traite d'aspects originaux ayant attrait au domaine des isolants topologiques et de leurs simulations par des systèmes d'atomes ultra-froids. Tout d'abord, ce travail aborde des concepts fondamentaux tels que la notion de géométrie et de topologie dans le contexte de la mécanique quantique ainsi que les techniques de simulations d'Hamiltonien avec les atomes ultra-froids. Ensuite on présentera trois travaux originaux liés aux isolants topologiques et leurs simulations.<br>Doctorat en Sciences<br>info:eu-repo/semantics/nonPublished

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44

Castevens, Charles Montgomery IV. "Ligand Binding Energies And Magnetic Circular Dichroism of the Human Melatonin Receptor MT1." VCU Scholars Compass, 2003. http://scholarscompass.vcu.edu/etd_retro/134.

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The binding energies and Gibbs free energies ofbinding for melatonin and other indole-,naphthalene-, and benzene-moiety ligands totrans-membrane sections of the seven-helix humanmelatonin receptor MT1 have been calculated atthe ab initio and semi-empirical levels using GAMESS, and with molecular mechanics using Sybyl. A linear relationship was found between the Sybyl-calculated binding energies and theexperimentally-determined pKi values, and alinear fit of calculated HINT scores to theexperimentally-measured ΔG values givesdeltaG = -0.00263Hscore - 9.477, in kcal/mol. In addition, the inter

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45

Fabini, Edoardo <1988&gt. "Characterization of Pharmaceutically Relevant Systems through Surface Plasmon Resonance and Circular Dichroism Spectroscopies." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7976/1/Fabini_Edoardo_Tesi.pdf.

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Studying biological interactions at a molecular level is crucial to rationally interpret pathophysiological conditions. Several analytical techniques have been engaged to elucidate different aspects of biological systems and, depending on the research question, medicinal chemists need to select the most tailored problem- solving approach. Among all possibilities, surface plasmon resonance (SPR) and circular dichroism (CD) spectroscopies offer intriguing potential. They can investigate both structural and functional aspects of biological targets and provide in return highly informative data out

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46

Rodger, Alison. "Molecular aspects of biomolecule structure and function." Thesis, The University of Sydney, 2002. http://hdl.handle.net/2123/516.

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All biological processes are fundamentally inter-molecular interactions. In order to understand, and hence control, biomolecular structure and function, methods are required that probe biological systems at the molecular level, ideally with those molecules being in their native environment. The research summarized herein has at its core the development and application of ultra violet (UV)-visible spectrophotometric techniquies for this prupose, in particular circular dichrosim (CD) and linear dichrosim (LD) but also absorbance, fluorescence and resonance light scattering. The spectroscopy is

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47

Rodger, Alison. "Molecular aspects of biomolecule structure and function." University of Sydney. Chemistry, 2002. http://hdl.handle.net/2123/516.

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All biological processes are fundamentally inter-molecular interactions. In order to understand, and hence control, biomolecular structure and function, methods are required that probe biological systems at the molecular level, ideally with those molecules being in their native environment. The research summarized herein has at its core the development and application of ultra violet (UV)-visible spectrophotometric techniquies for this prupose, in particular circular dichrosim (CD) and linear dichrosim (LD) but also absorbance, fluorescence and resonance light scattering. The spectroscopy is

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48

Capomaccio, Robin. "Interactions nanoparticules-protéines : caractérisation de la couronne protéique." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10323.

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De nos jours, les nanomatériaux sont utilisés dans de très nombreux domaines allant de l’agroalimentaire à la santé en passant par l’industrie automobile et le textile. Dans ce contexte, de nombreuses disciplines comme la métrologie et la nanotoxicologie se sont fortement développées. Dans les milieux biologiques, les protéines interagissent avec les nanoparticules pour former une couronne de protéines. Cette couronne de protéines joue un rôle important dans les interactions des nanoparticules avec leur environnement. Comprendre et caractériser les interactions des nanoparticules avec les prot

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49

Li, Tian-Yi, You-Xuan Zheng, and Yong-Hui Zhou. "Iridium(III) phosphorescent complexes with dual stereogenic centers: single crystal, electronic circular dichroism evidence and circularly polarized luminescence properties." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A36123.

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Iridium complexes with a chiral metal center and chiral carbons, Λ/Δ-(dfppy)₂Ir(chty-R) and Λ/Δ-(dfppy)2Ir(chty-S), were synthesized and characterized. These isomers have the same steadystate photophysical properties, and obvious offsets in ECD spectra highlight both the chiral sources. Each enantiomeric couple shows mirror-image CPL bands with a dissymmetry factor in the order of 10ˉ³.

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50

Tran, Viet-Dung. "Modélisation du dichroïsme circulaire des protéines : modèle simple et applications." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2076.

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La spectroscopie de dichroïsme circulaire (CD) est une des techniques fondamentales en biologie structurale qui permet la détermination du contenu en structures secondaires d'une protéine. Le rayonnement synchrotron a considérablement augmenté l’utilité de la méthode, car il permet de travailler avec une gamme spectrale étendue et à meilleure intensité. Le développement de modèles permettant d’établir une relation entre la structure d’une protéine et son spectre CD d’une manière efficace n’a pourtant pas suivi l’évolution technique et l’analyse de spectres CD de protéines entières reste un déf

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