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Dissertations / Theses on the topic 'Physicochemical model'

Author: Grafiati

Published: 8 June 2024

Last updated: 19 July 2025

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1

Matos, de Oliveira Ana Catarina. "Correlation of physicochemical properties of model drugs and aerosol deposition." Thesis, University College London (University of London), 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510077.

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2

Pirogova, Elena 1968. "Examination of physicochemical properties of amino acids within the resonant recognition model." Monash University, Dept. of Electrical and Computer Systems Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/8424.

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3

Yoo, Ji Yeon. "Development and application of an in vitro physicochemical upper gastrointestinal system (IPUGS) simulating the human digestive processes." Monash University. Faculty of Engineering. Department of Chemical Engineering, 2009. http://arrow.monash.edu.au/hdl/1959.1/75065.

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Increased and combined knowledge of food processing, molecular biology, health and nutrition has triggered production of many different types of functional foods and pharmaceutics recently. The efficacy and safety of such products are being assessed prior to marketing by in vivo and/or in vitro studies. Traditional in vivo studies require excessive time, cost and labour, as well as ethical approvals with subject to humans or animals in some instances. Therefore excessive number of runs may be avoided if reliable in vitro system is available. During the course of this study, an in vitro physico

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4

Asmani, Mohamed. "Contribution à l'étude de l'interaction des ultrasons avec les milieux biologiques." Valenciennes, 1994. https://ged.uphf.fr/nuxeo/site/esupversions/f95e1d1f-7e98-47bc-8b7e-ba9d4907a113.

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Ce travail s'inscrit dans un but de caractérisation et de quantification des propriétés physiques et chimiques de la matière vivante et de ses constituants. Les objectifs recherches sont de deux ordres: une meilleure compréhension des mécanismes d'interaction des ondes ultrasonores avec les milieux biologiques, qui sont parmi les plus complexes; le développement de méthodes ultrasonores permettant de mesurer des propriétés physico-chimiques des milieux biologiques. Le choix des glucides comme modèle moléculaire pour étudier l'interaction ultrasons-milieux biologiques réside dans le fait que ce

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5

Brijwani, Khushal. "Solid state fermentation of soybean hulls for cellulolytic enzymes production: physicochemical characteristics, and bioreactor design and modeling." Diss., Kansas State University, 2011. http://hdl.handle.net/2097/8401.

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Doctor of Philosophy<br>Department of Grain Science and Industry<br>Praveen V. Vadlani<br>The purpose of this study was to investigate micro- and macro-scale aspects of solid state fermentation (SSF) for production of cellulolytic enzymes using fungal cultures. Included in the objectives were investigation of effect of physicochemical characteristics of substrate on enzymes production at micro-scale, and design, fabrication and analysis of solid-state bioreactor at macro-scale. In the initial studies response surface optimization of SSF of soybeans hulls using mixed culture of Trichoderma rees

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6

Baumgart, Tobias. "Herstellung und physikochemische Charakterisierung von planaren gestützten Lipid-Modellmembran-Systemen Preparation and physicochemical characterisation of planar supported lipid model membrane systems /." [S.l.] : [s.n.], 2001. http://ArchiMeD.uni-mainz.de/pub/2001/0123/diss.pdf.

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7

Gholami, Samaneh. "Physicochemical and antigenic properties correlation in Streptococcus gordonii vaccine vectors and development of a Streptococcus pneumoniae intra-tracheal mouse model of pneumonia." Doctoral thesis, Università di Siena, 2023. https://hdl.handle.net/11365/1225314.

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In the present thesis, the correlation between the physicochemical and antigenic properties of different recombinant Streptococcus gordonii vaccine vectors was studied. Evaluation of vaccine efficacy, antigenicity and immugenicity is a crucial step in developing vaccines, thus investigating a simple method to analyze vaccine efficacy besides other methods could be a major part of developing bacterial vaccine vectors. To approach this, isoelectric point measurements and zeta-potential titration as well as antigenicity and immunogenicity of S.gordonii vaccine vectors (with fbpA, RPS, gtfg gene

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8

Moosa, Aysha Bibi. "Influence of selected formulation factors on the transdermal delivery of ibuprofen / Aysha Bibi Moosa." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9795.

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A pharmaceutical dosage form is an entity that is administered to patients so that they receive an effective dose of an active pharmaceutical ingredient (API). The proper design and formulation of a transdermal dosage form require a thorough understanding of the physiological factors affecting percutaneous penetration and physicochemical characteristics of the API, as well as that of the pharmaceutical exipients that are used during formulation. The API and pharmaceutical excipients must be compatible with one another to produce a formulation that is stable, efficacious, attractive, easy to ad

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9

Wang, Hui. "Development of nicotine loaded chitosan nanoparticles for lung delivery." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/108006/1/Hui_Wang_Thesis.pdf.

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This research offers a specific strategy for the management of a global health problem associated with smoking addiction. Novel controlled release nicotine-loaded chitosan nanoparticles have been developed as a potential therapy. In vitro and in vivo evaluation of these nanoparticles indicate that they are suitable as dry powder inhaler formulations for pulmonary delivery. Results from a mouse model should translate to humans to provide a safe and effective approach to treat smoking dependence.

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10

Mangold, Lucas. "Étude multi-techniques et multi-échelles de la spéciation du titane(IV) dans l’acide phosphorique concentré." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0025.

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L’acide phosphorique et les sels de phosphates sont utilisés dans le monde entier dans la production de fertilisants, d’additifs alimentaires, mais également comme agent de gravure dans l’industrie électronique et pour diverses applications de l’industrie pharmaceutique. Selon l’application visée, un degré de pureté plus ou moins élevé peut être requis vis-à-vis d’un certain nombre d’impuretés dissoutes conjointement avec l’acide phosphorique lors de la lixiviation des roches phosphatées par l’acide sulfurique (voie humide, constituant aujourd’hui le procédé quasi exclusif de production de H₃P

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11

Higgins, Huntley G. "The effects of physicochemical properties of secondary sludge on settling models." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62949.pdf.

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12

RACAPE, EVELYNE. "Influence des fonctions amides sur les proprietes physicochimiques des pectines." Nantes, 1989. http://www.theses.fr/1989NANT2001.

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Gelification des pectines amidees en presence de calcium. Etude de modeles simplifies (acides pectiques amides). Les pko dependent du parametre de densite de charge et non pas du taux d'amidation/repartition non aleatoire des fonctions amides. La sensibilite au calcium des pectines amidees resulte de l'alternance de blocs de fonctions acides libres et methyles reparties aleatoirement et de fonctions amides, generateurs de liaisons h intermoleculaires, provenant de leur synthese concentre en ammoniac et en pectine

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13

Santos, Mickael da Costa. "Study of the influence of high hydrostatic pressure on wine chemical and sensorial characteristics." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14822.

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Doutoramento em Química<br>During the last years, the use of high hydrostatic pressure (HHP) as a non-thermal technology for preservation or aging of wine has increased substantially in the academic community. However, HHP treated wine has been only analysed after the pressure treatment, with no knowledge available on the effects of HHP during subsequent storage. The results presented in this thesis showed that HHP treatments influence the chemical and sensorial properties of wine during storage. The application of high hydrostatic pressure treatments in winemaking for wine preservation, as a

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14

MAGALHAES, WELINGTON F. "Influence de parametres physico-chimiques sur les reactions du positonium en solution." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13218.

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15

Goodyear, Simon R. "Physicochemical methods for measuring the properties of bone and their application to mouse models of disease." Thesis, University of Aberdeen, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=133992.

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This thesis describes a toolbox of complementary techniques that together measure and mechanical properties of bone. Three-point bending is used to measure the mechanical properties of bone; micro computed tomography provides cortical geometry and parameters describing trabecular bone. The material properties, elastic modulus and density, are measured directly using ultrasound and Archimedes’ principle, while composition and bone chemistry are investigated by ashing and Raman microscopy. These methods are used to characterise bone from the naturally occurring Gunmetal mouse and the engineere

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16

Lenormand-Foucaut, Alix. "Modélisation chimique de protéines fer-soufre à haut potentiel : synthèses et caractérisations physico-chimiques de nouveaux agrégats à ligands thiolates encombrés dans les états (4Fe-4S)2+ et (4Fe-4S)3+." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10056.

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Cette these se situe dans le cadre des modelisations chimiques de proteines fer-soufre, plus particulierement les proteines fer-soufre a haut potentiel (hipip). L'objectif est de synthetiser des centres 4fe-4s dans les deux etats d'oxydation physiologiques 4fe-4s#2+ et 4fe-4s#3+ et de les caracteriser d'un point de vue physico-chimique. L'hypothese a partir de laquelle le sujet a ete aborde consiste a supposer qu'il est necessaire d'etablir une zone steriquement encombree et hydrophobe autour de l'agregat afin de proteger le centre 4fe-4s#3+ d'une degradation oxydante. Pratiquement, un tel env

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17

David, Hélène. "Etude de matrices polymères permettant la libération contrôlée d'agents actifs en agriculture : expérimentation et modélisation des transferts de matière." Saint-Etienne, 1989. http://www.theses.fr/1989STET4004.

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L'agent actif considéré a été l'éthoprophos, principe nématicide utilisé en agrochimie, mais dans un premier temps, l'aniline a été utilisé comme agent simulant. Les processus d'absorption et de désorption dans l'eau, ont été modélisés, dans le cas d'un granulé composé d'EVA pur, à l'aide d'une solution analytique de l'équation de Fick. Un modèle mathématique basé sur une méthode numérique a été construit pour décrire les transferts à travers un granulé composé par un noyau et une enveloppe

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18

Larnaudie, Guy. "Etude thermodynamique de fluides de travail pour pompes à chaleur fonctionnant à très hautes températures. Utilisation du mélange mercure-sodium." Rouen, 1996. http://www.theses.fr/1996ROUES010.

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L'utilisation de pompes à chaleur fonctionnant à très hautes températures permettrait de pallier au déficit de chaleur à haut niveau (500°C) très souvent constaté sur les grandes installations industrielles qui, par contre, présentent généralement un excédent de chaleur à bas niveau (200°C). Les travaux présentés dans ce mémoire s'inscrivent dans le cadre d'une étude des pompes à chaleur à absorption susceptibles d'être utilisées dans le domaine des températures comprises entre 200°C et 1 200°C ; ceci au moyen de fluides de travail constitués d'un mélange de métaux liquides ou de sels fondus e

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19

Tielker, Nicolas [Verfasser], Stefan M. [Akademischer Betreuer] Kast, and Paul [Gutachter] Czodrowski. "Physicochemical property prediction for small molecules using integral equation-based solvation models / Nicolas Tielker ; Gutachter: Paul Czodrowski ; Betreuer: Stefan M. Kast." Dortmund : Universitätsbibliothek Dortmund, 2021. http://d-nb.info/1238349706/34.

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20

Rguini, Noureddine. "Modélisation informatique de propriétés moléculaires." Nancy 1, 1988. http://www.theses.fr/1988NAN10209.

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Étude des possibilités offertes par les méthodes semi-empiriques de la chimie quantique, en matière de modélisation moléculaire. Étude du caractère acidobasique d'une molécule (amine, alcool). Étude du phénomène de liaison hydrogène. Modélisation de la surface des alumines amorphes

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21

Sturm, Johannes Jörg [Verfasser], Andreas [Akademischer Betreuer] Jossen, Andreas [Gutachter] Jossen, and Hubert A. [Gutachter] Gasteiger. "State-Estimation of Lithium-Ion Batteries using Physicochemical Models and Experimental Characterization Techniques / Johannes Jörg Sturm ; Gutachter: Andreas Jossen, Hubert A. Gasteiger ; Betreuer: Andreas Jossen." München : Universitätsbibliothek der TU München, 2021. http://d-nb.info/1231995122/34.

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22

Kadel, Sabita. "Impact of physicochemical properties of filtration membranes on peptide migration and selectivity during electrodialysis with filtration membranes : development of predictive statistical models and understanding of mechanisms involved." Doctoral thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66602.

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Au cours du procédé d'électrodialyse avec membrane de filtration (EDMF), les peptides chargés migrent sélectivement à travers des membranes de filtration (MFs) dans les compartiments respectifs de récupération des peptides anioniques (ARC) ou cationiques (C+ RC). Par conséquent, le type d'interaction entre les peptides et l'interface de la MF, en raison de ses propriétés physicochimiques, doit avoir un impact significatif sur la performance globale de l’EDMF (migration et sélectivité des peptides). Donc, l'objectif principal de cette thèse de doctorat était d'étudier les propriétés physicochim

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23

Martínez, Brito Izacar Jesús. "Quantitative structure fate relationships for multimedia environmental analysis." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/8590.

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Key physicochemical properties for a wide spectrum of chemical pollutants are unknown. This thesis analyses the prospect of assessing the environmental distribution of chemicals directly from supervised learning algorithms using molecular descriptors, rather than from multimedia environmental models (MEMs) using several physicochemical properties estimated from QSARs. Dimensionless compartmental mass ratios of 468 validation chemicals were compared, in logarithmic units, between: a) SimpleBox 3, a Level III MEM, propagating random property values within statistical distributions of widely reco

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24

Quadri, Mara Gabriela Novy. "Transferts de solutés dans les sols saturés et non saturés : application au pentachlorophénol." Grenoble 1, 1993. http://www.theses.fr/1993GRE10120.

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Les processus de transfert de pesticide dans les sols sont encore mal connus. Avec l'objectif de mieux comprendre les mécanismes impliqués, des essais dans des colonnes remplies avec différents types de sols ont été effectués sous les conditions de saturation et de saturation partielle en eau. Des expériences avec un traceur ont été utilisées pour la caractérisation hydrodynamique du milieu. Les mécanismes d'interaction physicochimiques d'une molécule pesticide modèle, le pentachlorophenol (pcp) avec la matrice solide, sont observés par la comparaison des courbes de restitution du pesticide av

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25

Серженьга, О. В. "Науково-методичні засади оцінки характеру насичення пластів і положення газонафтового контакту з використанням геоелектричної моделі присвердловинної зони (на прикладі нафтогазоконденсатних родовищ Західно-Сибірської нафогазоносної провінції)". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2007. http://elar.nung.edu.ua/handle/123456789/4219.

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У дисертації висвітлюються актуальні питання визначення положення газонафтового і водонафтового контактів на “водоплавних” нафтогазоконденсатних покладах за результатами геофізичних досліджень у відкритому стовбурі свердловини. Такі поклади є об'єктами з дуже складними електричними властивостями присвердловинної зони і потребують підвищення інформативності комплексу методів ГДС. Теоретично обґрунтовано і доведено фактичними дослідженнями в свердловинах переваги методу ВІКІЗ для визначення параметрів геоелектричної моделі порід-колекторів, які виповнюють теригенні відклади юрського комплексу ЗС

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26

Derenne, Sylvie. "Contribution a l'etude des proprietes physiques de mineraux du manteau inferieur." Paris 6, 1988. http://www.theses.fr/1988PA066281.

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Etude de petrologie experimentale sur les transformations a hautes pressions et hautes temperatures, de silicates et de germanates a structure olicine et pyroxene. Il a ete determine en fonction de la pression et de la temperature, la distribution du magnesium, du fer et du calcium entre mineraux mantelliques. Un modele thermodynamique coherent est construit et a permis de determiner le champ de stabilite de la perovskite silicatee et de proposer une interpretation de la discontinuite sismique des 670 km. Des mecanismes microscopiques de transformations de phase de l'olivine sont proposes. De

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27

Mollard, Claire. "Modèles pour l'étude de l'assimilation du fer par les bactéries et les plantes : sidérophores abiotiques et processus d'échange." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10295.

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L'acquisition du fer et l'echange de ce metal entre deux siderophores sont des processus biologiques majeurs. Des etudes preliminaires ont montre l'existence de complexes ternaires intermediaires lors de l'echange de ligand. Nous presentons une approche structurale des complexes ternaires par le biais de nouveaux ligands de syntheses. Quatre ligands ont ete prepares, deux comportent des structures mixtes : deux sortes de sous-unites regroupees sur une charpente tripodale. Deux voies de syntheses ont ete envisagees. Dans la premiere, la charpente tripodale etait obtenue par alkylation d'une ami

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28

Keowmaneechai, Eakaphan. "Influence of protein-mineral interactions on physicochemical properties of model nutritional beverage emulsions." 2002. https://scholarworks.umass.edu/dissertations/AAI3039367.

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Nutritional oil-in-water emulsion products are usually fortified with minerals, which can interact with other ingredients and cause physiochemical instability reducing product shelf-life. The objective of this study was to investigate the impact of mineral-ingredient interactions on properties and stability of protein stabilized emulsion in order to find potential approaches to prevent the emulsion instability. Commercial nutritional beverages had mean particle diameters between 0.5–11 μm and pH values around 7. The monovalent and divalent minerals present in the products at the highest averag

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29

Chan, I.-Ping, and 詹依屏. "Study of process model system on physicochemical properties and quality modification of instant rice flour." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/vqb7fu.

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碩士<br>國立中興大學<br>食品暨應用生物科技學系所<br>99<br>Instant rice flour belongs to the pregelatinized cereal products group and mainly uses the dry methods: puffing, roasting or wet methods: drum drying, steaming or extrution to carry out gelatinization, drying, grinding, sieving to obtain the cereal particles and paste. The puffing gun and drum dryer are often used to produce edible cereal products because of their low costs and easy to use. This study uses puffing and drum drying to prepare instant rice flour and examines the effects of (1) different puffing pressures (0, 3, 5, 7, 9, 11kg/cm2), (2) cold an

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30

Zhang, K., A. Fahr, M. H. Abraham, W. E. Jr Acree, Desmond J. Tobin, and Xiangli Liu. "Comparison of lipid membrane-water partitioning with various organic solvent-water partitions of neutral species and ionic species: Uniqueness of cerasome as a model for the stratum corneum in partition processes." 2015. http://hdl.handle.net/10454/9426.

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Yes<br>Lipid membrane-water partitions (e.g., immobilized artificial membrane systems where the lipid membrane is a neutral phospholipid monolayer bound to gel beads) were compared to various organic solvent-water partitions using linear free energy relationships. To this end, we also measured the retention factors of 36 compounds (including neutral and ionic species) from water to liposomes made up of 3-sn-phosphatidylcholine and 3-sn-phosphatidyl-l-serine (80:20, mol/mol), employing liposome electrokinetic chromatography in this work. The results show that lipid membranes exhibit a considera

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31

Mukherjee, Rajdip. "Precipitate Growth Kinetics : A Phase Field Study." Thesis, 2005. https://etd.iisc.ac.in/handle/2005/1390.

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Mukherjee, Rajdip. "Precipitate Growth Kinetics : A Phase Field Study." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1390.

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33

Baumgart, Tobias [Verfasser]. "Herstellung und physikochemische Charakterisierung von planaren gestützten Lipid-Modellmembran-Systemen = Preparation and physicochemical characterisation of planar supported lipid model membrane systems / vorgelegt von Tobias Baumgart." 2001. http://d-nb.info/962994855/34.

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34

Elzainy, Abeer. "Topical liposome formulations of hydroxyzine and cetirizine : evaluation of the physicochemical characteristics and stability, and the peripheral H1-antihistaminic activity and systemic absorption in a rabbit model." 2005. http://hdl.handle.net/1993/20136.

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35

Jouyban, A., S. C. Grosse, M. W. Coleman, H. K. Chan, E. Kenndler, and Brian J. Clark. "Calculation of electrophoretic mobility in mixed solvent buffers in capillary zone electrophoresis using a mixture response surface method." 2009. http://hdl.handle.net/10454/3755.

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No<br>The electrophoretic mobilities of three beta-blocker drug practolol, timolol and propranolol, have been measured in electrolyte systems with mixed binary and ternary water-methanol-ethanol solvents with acetic acid/sodium acetate as buffer using capillary electrophoresis. The highest mobilities for the analytes studied have been observed in pure aqueous. the lowest values in ethanolic buffers The measured electrophoretic mobilities have been used to evaluate the accuracy of a mathematical model based on a mixture response surface method that expresses the mobility as a function of the so

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