Дисертації з теми "Colloidal approaches"
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Derelli, Davide. "Self-assembly of colloidal particles - a combination of experimental and simulation approaches." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18076/.
Повний текст джерелаStaicu, Lucian. "Production of colloidal biogenic elemental selenium and removal by different coagulation-flocculation approaches." Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1180/document.
Повний текст джерелаSelenium (Se) is a chalcogen element with a narrow window between essentiality and toxicity. The toxicity is mainly related to the chemical speciation that Se undergoes under changing redox conditions. Se oxyanions, namely selenite (Se[IV], SeO32-) and selenate (Se[VI], SeO42-), are water-soluble, bioavailable and toxic. In contrast, elemental selenium, Se(0), is solid and less toxic. Nevertheless, Se(0) nanoparticles are potentially harmful as particulate Se(0) has been reported to be bioavailable to filter feeding mollusks (e.g. bivalves) and fish. Furthermore, Se(0) is prone to re-oxidation to toxic SeO32- and SeO42- when discharged into aquatic ecosystems. Biogenic Se(0) under investigation was produced by the reduction of Na2SeO4 under anaerobic conditions using a mixed bacterial inoculum (anaerobic granular sludge) and through the reduction of Na2SeO3 under aerobic conditions using a pure microbial culture (Pseudomonas moraviensis stanleyae, a novel strain identified and characterized for the first time herein). Both types of Se(0) showed strong colloidal stability within the 2-12 pH range. The colloidal stability is caused by the negatively charged (-15 mV to -30 mV) biopolymer layer covering biogenic Se(0) particles and by their nanometer size. The particle size of Se(0) produced by anaerobic granular sludge ranged between 50 and 300 nm, with an average size of 166 nm. Conversely, the Se(0) particles produced by Pseudomonas moraviensis stanleyae are characterized by a lower diameter (~ 100 nm).The solid-liquid separation potential of Se(0) was assessed by centrifugation, filtration, coagulation-flocculation and electrocoagulation. While all approaches can bring about Se(0) removal from suspension with various degrees of success, electrocoagulation using iron sacrificial electrodes showed the highest removal efficiency (97%). Because biogenic Se(0) is harmful to the environment, appropriate measures must be implemented for the solid-liquid separation using an efficient technology
Yin, Yadong. "Self-assembly approaches to photonic structures /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/10603.
Повний текст джерелаBleier, Blake J. "Droplet-Based Approaches to Probe Complex Behavior in Colloidal Fluids with High Composition Resolution." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1173.
Повний текст джерелаSato, Ai. "Technological approaches for controlling foaming properties of food proteins toward on-site consumption." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263709.
Повний текст джерелаElsayed, Mustafa Mohammed Abdelaziz Verfasser], Reinhard H. H. [Akademischer Betreuer] [Neubert, Gregor [Akademischer Betreuer] Cevc, and Alfred [Akademischer Betreuer] Blume. "Analytical approaches to physicochemical characterization of colloidal drug carriers / Mustafa Mohammed Abdelaziz Elsayed. Betreuer: Reinhard Neubert ; Gregor Cevc ; Alfred Blume." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2011. http://d-nb.info/1025202058/34.
Повний текст джерелаWilliams, P. M. "Protein ultrafiltration : a colloidal interaction approach." Thesis, Swansea University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636643.
Повний текст джерелаGuarino, Andrew Joseph Wrenn Steven Parker. "A colloidal science approach to the study of atherosclerosis /." Philadelphia, Pa. : Drexel University, 2006. http://dspace.library.drexel.edu/handle/1860/723.
Повний текст джерелаTorrecilla, Paula Jauregi. "Colloidal gas aphrons (CGA) : a novel approach to protein recovery." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387771.
Повний текст джерелаZeidan, Michael. "Colloidal aggregation with application to soot mediated lubricating fluids : a multi-level simulation approach." Thesis, University of Leeds, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432657.
Повний текст джерелаLopian, Tobias. "Characterization of a metal-extracting water-poor microemulsion." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT206/document.
Повний текст джерелаRecycling of rare earths from electronic waste has still not found a significant industrial realization. One reason is the lack of optimized separation procedures due to poor fundamental knowledge on these systems. Due to the chemical and physical similarities of these metals, designing an efficient, adaptive and predictive formulation is still out of scope of possibilities. The supramolecular interpretation of complex-formation in the organic phase has gained an increasing importance in the last years. It is the most promising approach allowing the explanation of diverse phenomena, such as third phase formation and strong signals in small scattering experiments and to revert to methods well known from surfactant science. Our contribution towards a more complete understanding in this matter is the analysis of the electrodynamic behaviour of such phases and the correlation of these findings with the results of self-assembly properties and mass transport in these media.For this study, we specifically designed a reference model, breaking an extraction process down to its four fundamental components: The extractant before extraction (Di-(2-ethylhexyl)phosphoric acid, HDEHP), the extractant after extraction (its sodium salt, NaDEHP), toluene as apolar diluent and water. A Gibbs phase prism has been prepared (illustrated in Figure 1), where the z-axis gives the ratio of HDEHP to NaDEHP, representing the development of an extraction. Covering the low frequency-domain, impedance spectroscopy has been the method of choice in order to determine the frequency-dependent conductivity. Using dielectric relaxation spectroscopy, we reveal fast dynamic processes at high frequencies. Combined SAXS and SANS measurements have been performed to compare the electrodynamic trends with aggregation properties and intercluster interactions.Two phenomena have been identified to be responsible for the conductivity profile in reverse micellar systems: the formation of charged aggregates through dismutation and percolation. Throughout the reference system, these two processes have been probed as function of three variables: total extractant concentration, the water-to-surfactant ratio and the Na:H-ratio. As a major result, water plays a significant role in both processes. In case of percolation, reverse aggregates are not able to merge in the absence of water. Therefore, electrical conductivity is prohibited. In dilute systems, water facilitates the dismutation–process leading to an increase in conductivity
Johnson, Elizabeth Edna. "Colloidal gas aphron foams : a novel approach to a hydrogel based tissue engineered myocardial patch /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/10579.
Повний текст джерелаOlivier, Bernard J. "In situ measurements of the approach to scaling of colloidal cluster size distributions during aggregation." Kansas State University, 1987. http://hdl.handle.net/2097/18447.
Повний текст джерелаSanci, Rukiye. "Synthesis Of Colloidal Silver Particles With Different Sizes By Seeding Approach For Surface Enhanced Raman Scattering (sers) Studies." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12611076/index.pdf.
Повний текст джерелаZengin, Adem. "Modelling the colloidal behaviour of food systems in the presence of fragmented proteins/macromolecules : a self-consistent field approach." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/13249/.
Повний текст джерелаNarayanan, Vishak. "A Colloidal Approach to Study the Dispersion Characteristics of Commercially Processed Nanocomposites: Effect of Mixing Time and Processing Oil." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535703328357695.
Повний текст джерелаDorney, Kevin Michael. "A Chemical Free Approach for Increasing the Biochemical Surface-Enhanced Raman Spectroscopy (SERS)-Based Sensing Capabilities of Colloidal Silver Nanoparticles." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401206511.
Повний текст джерелаDev, Choudhury Bikash. "Deterministic Silicon Pillar Assemblies and their Photonic Applications." Doctoral thesis, KTH, Halvledarmaterial, HMA, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-184709.
Повний текст джерелаQC 20160407
Lee, Seung Geol. "Structure-property relationship of hydrogel: molecular dynamics simulation approach." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44844.
Повний текст джерелаSpreng, Benjamin [Verfasser], and Gert-Ludwig [Akademischer Betreuer] Ingold. "Plane-wave approach to the Casimir interaction between colloid particles / Benjamin Spreng ; Betreuer: Gert-Ludwig Ingold." Augsburg : Universität Augsburg, 2021. http://d-nb.info/1233601164/34.
Повний текст джерелаScheele, Marcus [Verfasser], and Horst [Akademischer Betreuer] Weller. "Ein kolloidchemischer Ansatz zur Darstellung nanostrukturierter Thermoelektrika mit verbesserter Gütezahl = A colloidal chemistry approach to nanostructured thermoelectric materials with enhanced figure of merit / Marcus Scheele. Betreuer: Horst Weller." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2011. http://d-nb.info/1020383178/34.
Повний текст джерелаLazzaro, Fanny. "Comprendre les comportements des micelles de caséines dans des environnements variés, de leur équilibre minéral à leurs propriétés colloïdales et fonctionnelles : émulsion et coagulation présure." Thesis, Rennes, Agrocampus Ouest, 2017. http://www.theses.fr/2017NSARB301/document.
Повний текст джерелаCaseins micelles, composed of caseins, minerals and water, are under dynamic equilibria, they constantly exchange materials with their surrounding environments. In addition, casein micelles possess valuable functionalities in regards to the formation of dairy products, such as the ability to stabilize emulsions or to form rennet gels. Environmental changes, such as variations in pH, additions of salts or chelating agents, affect the casein micelles equilibria and lead to modifications in their compositional and colloidal properties. Such changes also modify their functional properties, although this aspect is poorly described in the literature. This project aimed to understand the relationships that link the environmental modifications, the mineral balance, the colloidal and functional properties of the casein micelles. The impact of five modifying factors (pH, Na3Cit, NaCl, CaCl2, MgCl2) of the casein micelles were studied and the focus was placed on emulsion and rennet coagulation fuThe former only induce the swelling of casein micelles while the latter led to their disruption into smaller aggregates. NaCl had no impact on the micellar mineral content but also caused the release of small aggregates, as revealed by electronic microscopy and small angle X-ray scattering analyses. The decisive role of micellar calcium phosphate on the functionalities was confirmed and this study highlighted the importance of monitoring the release of small aggregates, as they strongly affected emulsions stability and gels firmness. CaCl2 and MgCl2 additions slightly increased the mineral c
Stoll, Madeleine [Verfasser], Thorsten [Gutachter] Schaefer, Eva [Gutachter] Schill, and Ruben [Gutachter] Kretzschmar. "Colloid mobility controlling processes in single fractures : a bottom-up approach / Madeleine Stoll ; Gutachter: Thorsten Schaefer, Eva Schill, Ruben Kretzschmar." Jena : Friedrich-Schiller-Universität Jena, 2018. http://d-nb.info/1170395538/34.
Повний текст джерелаZhou, Dan [Verfasser], Irina [Akademischer Betreuer] Engelhardt, Irina [Gutachter] Engelhardt, and Martin [Gutachter] Sauter. "Development of numerical methods and approaches to simulate colloid transport and stream-aquifer interaction in heterogeneous natural soils / Dan Zhou ; Gutachter: Irina Engelhardt, Martin Sauter ; Betreuer: Irina Engelhardt." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1156184711/34.
Повний текст джерелаJarray, Ahmed. "Mesoscopic modeling, experimental and thermodynamic approach for the prediction of agglomerates structures in granulation processes." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/15112/1/jarray.pdf.
Повний текст джерелаKirillova, Alina, Georgi Stoychev, and Alla Synytska. "Programmed assembly of oppositely charged homogeneously decorated and Janus particles." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A36153.
Повний текст джерелаAsokan, Subashini. "Chemical processing of colloidal cadmium selenide nanoparticles: New approaches to dimensional and morphological control." Thesis, 2008. http://hdl.handle.net/1911/22180.
Повний текст джерелаSeyed, Shariatdoust Mirali. "Novel approaches to plasmonic enhancement applications: upconverters, 2D materials and tweezers." Thesis, 2021. http://hdl.handle.net/1828/13352.
Повний текст джерелаGraduate
Jiang, Peng. "Colloidal crystal approach to the fabrication of photonic band gap materials." Thesis, 2001. http://hdl.handle.net/1911/17980.
Повний текст джерелаLin, Chun-Ying, and 林俊穎. "Investigation of deposition process for colloidal articles using Monte Carlo approach." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/71206960243132234275.
Повний текст джерела元智大學
化學工程與材料科學學系
98
We developed a numerical model for TiO2 colloid particle distribution and sedimentation in aqueous solution by using kinetic Monte-Carlo algorithm. The system was assumed these particles were influenced by the Van der Waals and particle-particle electrostatic forces. The particle sedimentation process was calculated with the consideration of Van der Waals potential and electrostatic potential in the following study. Results show that the particles will be aggregated together whenever the Van der Waals forces present in the system only; while the particles can be dispersed by the electrostatic forces. After applying the two-stage process of surface potential, we can lower the number of vacant sites. If we applied three-stage process of surface potential before whole system reaching stability, the number of vacant sites increase. These results can be applied in the particle self-assembly process system.
Bessa, Ricardo Sá. "A biophysical approach to mitochondrial gene therapy: gemini surfactant-based colloidal vectors." Master's thesis, 2016. https://repositorio-aberto.up.pt/handle/10216/91003.
Повний текст джерелаBessa, Ricardo Sá. "A biophysical approach to mitochondrial gene therapy: gemini surfactant-based colloidal vectors." Dissertação, 2016. https://repositorio-aberto.up.pt/handle/10216/91003.
Повний текст джерелаHaque, Munima. "A colloidal science approach to characterize the nanoscale aggregation behavior of corn protein zein /." 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3362917.
Повний текст джерелаSource: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3637. Adviser: K. D. Bhalerao. Includes bibliographical references (leaves 69-78) Available on microfilm from Pro Quest Information and Learning.
Mallory, Stewart Anthony. "An Active Approach to Engineering the Microscopic." Thesis, 2017. https://doi.org/10.7916/D8D22955.
Повний текст джерелаNg, Sio-kit, and 吳紹傑. "Effective electrostatic interactions between 2-D colloid particles: a modeling approach." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/98385187035370582656.
Повний текст джерела國立中央大學
生物物理研究所
98
Interaction among charged colloidal particles has been investigated for long. One remarkable success, the so-called DLVO theory, considered the effects of both the van der Waals attraction and the screened Coulomb repulsion. In our current work, both the attractive and repulsive parts of the effective potential energy are observed while we consider the electrostatic effect only. In our model, we investigate the regime where the electrostatic interaction dominates and the counter-ions condense or fluctuate nearby each macro-ion. We use Monte Carlo simulations to obtain the average electrostatic interactions versus the distance between two macro-ions embedded in 2-dimensions. When the number of counter-ions is small, we obtain a short-range attraction and long-range repulsion. However, the attraction tends to vanish when the number of counter-ions increases. We provide possible scenarios for the sources of the attraction and repulsion.
Chen, Huaiqun. "Prediction Of Permeate Flux Decline In Crossflow Membrane Filtration Of Colloidal Suspension: A Radial Basis Function Neural Network Approach." Thesis, 2005. http://hdl.handle.net/10125/10427.
Повний текст джерелаFilby, André [Verfasser]. "Interaction of colloids with mineral surfaces : a microscopical and nanoscopical approach / von André Filby." 2009. http://d-nb.info/999417835/34.
Повний текст джерела