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Dissertations / Theses on the topic 'Dynamic and electrophoretic light scattering'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Chytilová, Aneta. "Frakcionace a molekulární organizace huminových kyselin." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240534.

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Humic acids are part of the natural organic matter occurring all around us. The aim of this thesis is to study the molecular organization, conformation of humic acids in aqueous solutions, that always raise a number of questions. For a long time, the scientists all over the world argue, if humic acid are polymers, micelles or supramolecules. Over time, thanks to new technologies, their opinions are moving away from a polymer model and tend rather to supramolecular arrangement of humic acids. Studying humic complex systems is not easy, because they are polydisperse and heterogeneous, which sign

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2

Mušková, Alexandra. "Příprava a charakterizace katanionických komplexů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414179.

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The diploma thesis deals with the preparation and characterization of catanionic complexes and their possible application to pharmaceutics and medicine. The catanionic complexes were prepared by mixing two oppositely charged surfactants with the concentration of 20 mmol·dm3 in various volume ratios. Two systems were analyzed – CTAB + SDS and Septonex + SDS. Both systems were prepared in an aqueous and physiological environment. The turbidimetric analyses provided results of the intensity of turbidity of the prepared mixtures. The size and stability of the prepared particles were determined by

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3

Repová, Romana. "Studium interakce záporně nabitých vezikulárních systémů s polykationty." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414178.

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This diploma thesis deals with the preparation and characterization of negatively charged catanionic vesicular systems and their combination with selected polycations. The catanionic vesicular system was prepared by mixing of two oppositely charged surfactants SDS and CTAB. The negative charge as well as the stability of the vesicular system was provided by the incorporation of phosphatidic acid. Polycations, DEAE and TMC, have been selected for use in a pharmaceutical applications. Characterization of the prepared systems was performed by measuring DLS and ELS. The results indicate that we we

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4

Vaidyanathan, Vidya. "Different methods for particle diameter determination of low density and high density lipoproteins-Comparison and evaluation." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1170.

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5

Černá, Klára. "Charakterizace adsorbčních vlastností probiotických bakterií." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376799.

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The aim of the diploma thesis is to characterize the adsorption properties of probiotic bacteria. Characterization was performed using of designed and optimized spectrophotometric method of determination of adhesion of probiotic bacteria to mucin as the main viscoelastic component of mucus. In order to provide a more detailed description of the adhesion interactions involved in the adhesion of probiotic bacteria to mucin, the viability of selected probiotic bacterial strains Lactobacillus rhamnosus CCM 1825, Lactobacillus plantarum CCM 7039, Lactobacillus delbrueckii subsp. bulgaricus CCM 7190

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6

Macfadyen, Allan John. "Photon correlation spectroscopy and electrophoretic light scattering using optical fibres." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277140.

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7

Patel, Sapna Bharat. "Electrophoretic and static light scattering measurements for equine serum albumin." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-12102007-105847.

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8

Sefton, M. S. "Dynamic light scattering from thermotropic liquid crystals." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370981.

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9

Liu, Suo. "Minimizing distortions in dynamic light scattering experiments." Thesis, University of Nottingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489892.

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Several methods are discussed and applied for minimizing distortions m dynamic light scattering (DLS). Multiple scattering, a very common phenomenon in DLS experiments, is discussed. Distortions caused by multiple scattering and its influence on correlation data are analyzed in detail. Five different methods are applied in simulations of suppression of multiple scattering in DLS experiments. The effect of foreign large particles, such as larger particles left by previous experiments, fast sinking dust in the sample suspension or agglomerations of the sample particles, are discussed and analyze

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10

Kremer, Heiko, Cristina Botero, Andreas P. Fröba, and Alfred Leipertz. "Thermal diffusivity of fluids by dynamic light scattering." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196289.

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11

Fröba, Andreas P., and Alfred Leipertz. "Diffusion measurements in fluids by dynamic light scattering." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196183.

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In the course of the last thirty years, light scattering techniques have been used with increasing effort and attention for the measurement of the thermophysical properties of pure fluids and fluid mixtures. Here, an introduction is given to dynamic light scattering (DLS) as a valuable tool for the measurement of diffusion processes. First, the basic principles of the method and its experimental realization are presented in some detail. A survey on various applications is given, which especially are related to the determination of transport and other thermophysical properties of transparent fl

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12

Fröba, Andreas P., and Alfred Leipertz. "Diffusion measurements in fluids by dynamic light scattering." Diffusion fundamentals 2 (2005) 63, S. 1-25, 2005. https://ul.qucosa.de/id/qucosa%3A14397.

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In the course of the last thirty years, light scattering techniques have been used with increasing effort and attention for the measurement of the thermophysical properties of pure fluids and fluid mixtures. Here, an introduction is given to dynamic light scattering (DLS) as a valuable tool for the measurement of diffusion processes. First, the basic principles of the method and its experimental realization are presented in some detail. A survey on various applications is given, which especially are related to the determination of transport and other thermophysical properties of transparent fl

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13

Kremer, Heiko, Cristina Botero, Andreas P. Fröba, and Alfred Leipertz. "Thermal diffusivity of fluids by dynamic light scattering." Diffusion fundamentals 2 (2005) 72, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14405.

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14

Kylpassis, Dolly Theodora. "A study of polyelectrolyte complexes with dynamic light scattering." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-02132009-171020/.

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15

Fröba, Andreas P., Cristina Botero, Heiko Kremer, and Alfred Leipertz. "Mutual diffusion coefficient in fluids by dynamic light scattering." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196269.

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16

Mao, Runsheng. "Developments in copolymerization and dynamic light scattering from hydrogels." Thesis, University of Salford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308525.

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17

Fröba, Andreas P., Cristina Botero, Heiko Kremer, and Alfred Leipertz. "Mutual diffusion coefficient in fluids by dynamic light scattering." Diffusion fundamentals 2 (2005) 70, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14404.

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18

Egert, Alexandra Marie. "Aggregation Behavior of Keratin Proteins Determined by Dynamic Light Scattering." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/52374.

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Keratin is a biomaterial derived from biological sources and can be used in a variety of medical applications. This study focuses on keratin derived from human hair. Unfortunately, there is not a lot of information in the literature describing how keratin reacts to subtle changes in an aqueous solution such as differences in pH, keratin concentration, buffer concentration, salt concentration, and temperature. To have a better understanding of this effect, dynamic light scattering was used to test the size ranges and volume percentages in each range. Dynamic light scattering shows the size

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19

Azzam, Mohammed-Osama Jad. "Dynamic light scattering of liquid/liquid and liquid/vapor interfaces." Case Western Reserve University School of Graduate Studies / OhioLINK, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=case1056559194.

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20

Sawatari, Nobuo. "DYNAMIC LIGHT SCATTERING BY OLIGOMERS AND POLYMERS IN DILUTE SOLUTION." 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149854.

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21

Schott, CeÌcile. "Dynamic light scattering and Freedericksz transition in novel nematic liquid crystals." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274513.

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22

Orkisz, Michal J. P. (Michal Jan P. ). "Dynamic light scattering studies of phase transitions in polymers and gels." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/32600.

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23

Miller, John Francis. "The determination of very small electrophoretic mobilities of dispersions in non-polar media using phase analysis light scattering." Thesis, University of Bristol, 1990. http://hdl.handle.net/1983/45ef1314-ee97-4667-b179-a073b73d568d.

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An apparatus is described that can determine electrophoretic mobilities of polar and non-polar colloidal dispersions down to -12 2 10 msV -1 -1 with typical resolutions of 0.5 to 5%, depending on the nature of the dispersion being studied. The diffusion coefficient and settling/convection velocity of the sample may be determined simultaneously in real time with the electrophoretic mobility. The technique, phase analysis light scattering (PALSY, is based upon classical laser-Doppler electrophoresis, but employs signal processing of the time domain phase information within the scattered light si

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24

Botero, Cristina, Heiko Kremer, Andreas P. Fröba, and Alfred Leipertz. "Particle diffusion coefficient and dynamic viscosity in non-ideal liquid mixtures by dynamic light scattering." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196233.

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25

Botero, Cristina, Heiko Kremer, Andreas P. Fröba, and Alfred Leipertz. "Particle diffusion coefficient and dynamic viscosity in non-ideal liquid mixtures by dynamic light scattering." Diffusion fundamentals 2 (2005) 67, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14401.

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26

Polverari, Marco. "Dynamic and evanescent wave light scattering of poly(ethylene oxide) - latex systems." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28515.

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The principal aims of the thesis were to carry out a systematic analytical study to determine the solution properties of narrow-distribution and broad-distribution linear poly(ethylene oxide) (PEO) polymer samples in aqueous and organic solution and to study the adsorption properties of these polymer samples onto glass interfaces and spherical latex particles. The deposition characteristics of various types of bare and PEO coated latex particles onto collector surfaces were also studied.<br>These studies allowed to ascertain the presence of PEO clusters in aqueous solution. The cluster size wa

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27

Price, Allen C. "Coherent soft x-ray dynamic light scattering from smectic-A liquid crystals /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/9677.

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28

Poggemann, Hanna-Friederike. "Investigation on liquid liquid phase separation of lysozyme by dynamic light scattering." Thesis, Stockholms universitet, Fysikum, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-193168.

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The liquid-liquid phase separation (LLPS) of biomolecules is a phenomenon which received a lot of attention in the last years because it is not only related to theformation of membraneless organelles but also to neurodegenerative diseases. Lysozyme is a globular protein that undergoes LLPS in a buffer salt system andfor that it is well investigated with several techniques like microscopy, dynamic lightscattering (DLS) or small-angle X-ray scattering. In this work we investigate the effect of temperature, solvent and sample con-centration on the diffusion coefficient, the hydrodynamic radius an

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29

Klemedsson, Shicarra. "Flocculation of natural organic matter in Swedish lakes." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85118.

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Flocculation is an important part of the carbon cycle. It is therefore crucial to understand how flocculation is regulated and how different environmental factors impact. A dilemma is that it has been found difficult to measure flocculation experimentally. In this thesis, flocculation of dissolved organic carbon in a Swedish lake was measured in a series of laboratory experiments. The method used was Dynamic Light Scattering (DLS). DLS is used to determine the size distribution profile of, for instance, small particles in suspension. DLS measures Brownian motion and relates it to the particle

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30

Aschinger, Andreas [Verfasser], Jörg [Gutachter] Winter, and Henning [Gutachter] Soltwisch. "Dynamic light scattering on complex plasmas / Andreas Aschinger ; Gutachter: Jörg Winter, Henning Soltwisch." Bochum : Ruhr-Universität Bochum, 2012. http://d-nb.info/1140222643/34.

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31

Linegar, Kirtland L. "Applications of dynamic light scattering in chemical engineering polymers, proteins, and liquid crystals /." College Park, Md. : University of Maryland, 2008. http://hdl.handle.net/1903/8314.

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Thesis (M.S.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Institute for Physical Science and Technology & Dept. of Chemical and Biomolecular Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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32

Saeed, Akhtar. "Static and dynamic light scattering of high molecular weight polystyrene in good solvents." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1059401322.

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33

Petry, David P. "Silicalite Clear Sol Precursors Studied by NMR, Mass Spectrometry and Dynamic Light Scattering." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525295.

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34

Sharma, Sunil K. "Dynamic Light Scattering Studies of Layer Fluctuations in Freely Suspended Smectic Liquid Crystal Films." Kent State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=kent1182907404.

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35

Golias, Elliot. "Optical Reflectivity and Dynamic Light Scattering Study in Thin Smectic-A Liquid Crystal Films." Kent State University Honors College / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1462796616.

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36

Boyko, Volodymyr. "N-Vinylcaprolactam based Bulk and Microgels: Synthesis, Structural Formation and Characterization by Dynamic Light Scattering." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1101720895093-99770.

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The light scattering methods were used for characterization of properties and formation of networks of different dimension, based on N-vinylcaprolactam (VCL). Formation of PVCL microgels in presence of poly(vinyl alcohol) as stabilizer was studied. Size of resulting microgels strongly depends on the temperature and heating rate: interparticle aggregation was observed during slow heating and intraparticle collapse during fast heating. Angular dependence of measured diffusion coefficient on the angle of observation was studied for the microgel in the swollen, shrunken and aggregated states. Ther

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37

Mahatnirunkul, Thanisorn. "One-step gold nanoparticle size-shift assay using synthetic binding proteins and dynamic light scattering." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/19216/.

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Gold nanoparticles (AuNPs) have attracted significant interest for biosensing applications because of their distinctive optical properties including light scattering. Dynamic light scattering (DLS) is an analytical tool used routinely for measuring the hydrodynamic size of colloids and nanoparticles in liquid environment. By combining the light scattering properties of AuNPs with DLS, a label-free, facile and sensitive assay has been developed. There have been several reports showing that NPcoupled DLS size shift assays are capable of quantitative analysis for target analytes ranging from meta

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38

Williams, Lloyd. "An investigation of the aggregation behavior of carnation ring spot virus using dynamic light scattering." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26203.

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The technique of digital autocorrelation of intensity fluctuations of scattered laser light is used to investigate the aggregation behavior of carnation ringspot virus. It is hypothesized by the author that the aggregation rate (R) is given by [See Thesis for Equation] R is measured for a range of values of the dependent experimental variables, temperature (T), and virus concentration (v₀). And the dependence of the two aggregation parameters, the temperature of aggregation (T[sub c]) and the energy of aggregation (E[sub agg]), on the experimental variables is ascertained. Also certain physi

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39

Kätzel, Uwe. "Dynamic Light Scattering for the Characterization of Polydisperse Fractal Systems by the Example of Pyrogenic Silica." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1197634640783-66357.

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Dynamic light scattering (DLS) is a method to size submicron particles by measuring their thermal motion (diffusion) in suspensions and emulsions. However, the validity of the Stokes-Einstein equation that relates the diffusion coefficient and the particle size is limited to spherical particles and very low concentrations. Within this thesis, DLS is used for the characterization of suspensions of pyrogenic silica which consists of fractal-like aggregates composed of sintered spherical primary particles. These structural features clearly complicate the understanding of DLS experiments and have

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40

Haghighi, Maryam [Verfasser]. "Plasmon-enhanced dynamic light scattering of gold nanorods in bulk and near a wall / Maryam Haghighi." Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1054824940/34.

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41

Parupudi, Arun Kumar. "Demonstration of scale-down dynamic light scattering and determination of osmotic second virial coefficients for proteins." Master's thesis, Mississippi State : Mississippi State University, 2007. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11092007-112135/.

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42

Kätzel, Uwe. "Dynamic Light Scattering for the Characterization of Polydisperse Fractal Systems by the Example of Pyrogenic Silica." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1197634640783-66357.

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43

Stojadinovic, Strahinja. "Light Scattering Studies of Dynamics of Bent-Core Liquid Crystals." Kent State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=kent1105330884.

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44

Oberthür, Dominik [Verfasser], and Christian [Akademischer Betreuer] Betzel. "Detailed Analysis of Protein Crystallization and Aggregation Phenomena Applying Dynamic Light Scattering / Dominik Oberthür. Betreuer: Christian Betzel." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2012. http://d-nb.info/1026332982/34.

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45

Parsouzi, Azad Sharabiani Zeinab. "DYNAMIC LIGHT SCATTERING STUDY OF FLEXIBLE LIQUID CRYSTALLINE N-MERS THAT FORM THE TWIST-BEND NEMATIC PHASE." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1563246206806784.

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46

Aime, Stefano. "Dynamic failure precursors in soft matter." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS011/document.

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La fracture des matériaux, omniprésente aussi bien en science des matériaux qu’en géologie, implique souvent des événements soudains et imprévisibles, sans précurseurs détectables macroscopiquement. Une compréhension approfondie des mécanismes microscopiques conduisant in fine à la rupture est requise, mais les expériences restent rares. La détection de la dynamique microscopique dans les échantillons cisaillés est expérimentalement très difficile, car elle nécessite de combiner sensibilité mécanique, qualité optique et exigences strictes sur l’encombrement. Dans ce travail, nous présentons l'

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47

Bykov, A. (Alexander). "Experimental investigation and numerical simulation of laser light propagation in strongly scattering media with structural and dynamic inhomogeneities." Doctoral thesis, University of Oulu, 2010. http://urn.fi/urn:isbn:9789514261558.

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Abstract Light scattering diagnostics of turbid media containing both structural and dynamic inhomogeneities is currently of significant importance. One of the important directions in modern light scattering diagnostics is the development of methods for probing biological media with visible- and near-infrared radiation allowing for visualization of the biotissue structure. Optical methods for studying the biotissue structure and characterization of its optical properties are very promising and have been rapidly developing during the past decade. The present work is aimed at improving and dis

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48

Martinez, Vincent Arnaud, and vincent martinez@student rmit edu au. "New Insights into the Mechanisms of Crystallisation and Vitrification - a Dynamic Light Scattering Study of Colloidal Hard Spheres." RMIT University. Applied Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091007.102126.

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This thesis reports on a comprehensive experimental study of the collective dynamics of colloidal hard sphere suspensions. The main quantity measured is the coherent Intermediate Scattering Function (ISF) using a range of techniques based on Dynamic Light Scattering (DLS). The collective dynamics are measured as a function of scattering vector for volume fractions spanning from dilute samples, through the fluid phase and the metastable region, up until deep in the glass region. This work describes two major explorations: (i) the effect of volume of fraction on the q-dependency of the collectiv

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49

Plaster, Bradley R. (Bradley Robert) 1976. "Dynamic light scattering and diffusing wave spectroscopy studies of the microscopic dynamics of polystyrene latex spheres suspened in glycerol." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/36673.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.<br>Includes bibliographical references (leaf 50).<br>The dynamics of polystyrene latex spheres [650 A radius] suspended in glycerol have been studied using the techniques of dynamic light scattering in the single scattering limit and diffusing wave spectroscopy in the multiple scattering regime using a charge coupled device [CCD] camera as our detector. Our experiments, which investigated suspensions of various concentrations [0.001</=0</=0.075], extended over length scales ranging from q = 0.00015 A to q = 0.00071 A

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50

Neupane, Krishna Prasad. "Light Scattering Studies of Orientational Order in Liquid Crystalline Tetrapodes and Lyotropic Chromonic Liquid Crystals." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1239811255.

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