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Dissertations / Theses on the topic 'Biopolymer matrix'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Jere, Deepali G. Cooper Lyndon F. "Evaluation of a biopolymer matrix for cell based bone repair." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,1609.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2008.<br>Title from electronic title page (viewed Sep. 16, 2008). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Prosthodontics School of Dentistry." Discipline: Prosthodontics; Department/School: Dentistry.

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2

Karamini, Christina Cooper Lyndon F. "Biopolymer matrix enhances bone regeneration in rat critical size skull defects." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,538.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2006.<br>Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Prosthodontics (School of Dentistry)." Discipline: Prosthodontics; Department/School: Dentistry.

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3

Hebblethwaite, John. "A '1'9F NMR study of enzyme behaviour in a biopolymer matrix." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362016.

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4

Dai, Yuqin. "Development of matrix-assisted laser desorption ionization mass spectrometry for biopolymer analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0003/NQ39519.pdf.

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5

Giordano, Céline. "Pre-Clinical Evaluation of Biopolymer Delivered Circulating Angiogenic Cells in Hibernating Myocardium." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20619.

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Vasculogenic cell-based therapy combined with tissue engineering is a promising revascularization strategy for patients with hibernating myocardium, a common clinical condition. We used a clinically relevant swine model of hibernating myocardium to examine the benefits of biopolymer-supported delivery of circulating angiogenic cells (CACs) in this context. Twenty-five swine underwent placement of an ameroid constrictor on the left circumflex artery (LCx). After 2 weeks, positron emission tomography measures of myocardial blood flow (MBF) and myocardial flow reserve (MFR) were reduced in the af

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6

Kuznetsov, V. N., A. S. Stanislavov, S. N. Danilchenko, et al. "Structural Properties of the Nanocrystallized Magnetite of Different Syntheses." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35450.

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Transmission electron microscopy (TEM) with electronic diffraction and X-ray diffraction (XRD) was used to study structural features of nanosized magnetite Fe3O4, which was synthesized using polymeric matrices (polysaccharide chitosan, at alias). From the received data it was revealed that growth inhibition and size stabilization of Fe3O4 nanoparticles were strongly affected by polysaccharide matrix. It was also observed that directional size decrease of Fe3O4 nanoparticles was accompanied by the increasing defectiveness of crystal lattice and decreasing unit cell size. The effectiveness

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7

Lang, Nadine [Verfasser], and Ben [Akademischer Betreuer] Fabry. "The Influence of Matrix Properties on Cell Migration in Disordered 3-dimensional Biopolymer Network / Nadine Lang. Gutachter: Ben Fabry." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2014. http://d-nb.info/1075478790/34.

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8

Jacquel, Nicolas. "Synthesis and properties of polyesters based on poly(butylene succinate), a renewable polymer." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0127.

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Les polymères issus de la biomasse génèrent depuis quelques années un engouement certain puisqu’ils apparaissent comme de potentiels substituts aux polymères issus de l’industrie pétrolière. Parmi ces monomères récemment développés, l’acide succinique bio-sourcé a reçu une attention particulière notamment pour des applications dans le domaine des polyesters tels que le poly(butylène succinate). La présente thèse décrit la synthèse de ce polymère par estérification directe de l’acide succinique et du 1,4-butanediol dans un réacteur pilote de 7.5 L. Les principaux paramètres du procédé tels que

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9

Gay, Swann. "Elaboration de matrices microcellulaires de polymère biosourcé par la technologie CO², supercritique." Thesis, Angers, 2017. http://www.theses.fr/2017ANGE0007.

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Dans le contexte actuel, où la préservation des ressources et le développement durable sont devenus des enjeux importants de ce siècle, la production de matériaux tant performants que respectueux de l’environnement est devenue indispensable. Ainsi, ce travail de thèse porte sur l’élaboration de matrices poreuses de biopolymères en utilisant la technologie CO2 supercritique (CO2-SC). L’utilisation du PLA permet de produire des matrices 100% biosourcées et biodégradables, alors que l’utilisation de CO2-SC permet de diminuer l’impact écologique des procédés de mise en forme. Dans un premier temps

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10

Bardají, Sierra Sara. "Development of resorbable bioceramic bone cements towards vertebroplasty application." Doctoral thesis, Universitat Ramon Llull, 2019. http://hdl.handle.net/10803/665391.

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L'augment de l'esperança de vida de les persones, porta com a conseqüència el desenvolupament de malalties relacionades amb l'edat. Una d'elles és l'osteoporosi, una malaltia esquelètica progressiva, que disminueix la densitat de la massa òssia i debilita el cos esquelètic vertebral del pacient. Una de les conseqüències més directes i severes és la formació de fractures per compressió vertebral. Una de les tècniques mínimament invasives que s'utilitza per tractar aquest tipus de fractures s'anomena vertebroplàstia. Aquesta tècnica ha donat resultats molt esperançadors, ja que ha demostrat que

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11

Lanfer, Babette. "Aligned Fibrillar Collagen Matrices for Tissue Engineering." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-33373.

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The desire for repair of tissue defects and injury is the major need prompting research into tissue engineering. Engineering of anisotropic tissues requires production of ordered substrates that orient cells preferentially and support cell viability and differentiation. Towards this goal, this thesis investigated methodologies to align extracellular matrix structures in vitro to guide stem/progenitor cell behaviour for tissue regeneration. Aligned collagen fibrils were deposited on planar substrates from collagen solutions streaming through a microfluidic channel system. Collagen solution conc

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12

Ginsac, Nathalie. "Caractérisation de matériaux composite polyacide lactique-bioverre pour application dans la réparation osseuse." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00668698.

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Ce travail de thèse porte sur la caractérisation d'un matériau composite polyacide lactique-bioverre pour application comme dispositif de réparation osseuse. Le bioverre étant trop fragile pour être utilisé seul comme dispositif de réparation osseuse, celui-ci est associé à une matrice polymère résorbable permettant d'apporter le caractère bioactif à des matériaux pouvant être mis en forme par des procédés de plasturgie. Le matériau composite polyacide lactique-bioverre est ainsi mis en forme par injection à partir de granules élaborés par voie solvant. La caractérisation des propriétés de ce

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13

D'AGOSTINO, ILENIA. "Design of Biopolymer Nanoparticles for Encapsulation and Delivery of Nutraceuticals." Doctoral thesis, Università degli Studi di Trieste, 2016. http://hdl.handle.net/11368/2907989.

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The aim of the project is the formulation of new delivery systems based on covalent interaction between alginate and chitosan. In particular different methodologies of preparation of the carriers both in water and in emulsion have been studied. The synthesized nanoparticles show a good ability to encapsulate hydrophobic molecules of great interest in nutraceuticals.

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14

Hoteling, Andrew J. "MALD/I TOF PSD and CID : understanding precision, resolution, and mass accuracy and MALD/I TOFMS : investigation of discrimination issues related to solubility /." Philadelphia, Pa. : Drexel University, 2004. http://dspace.library.drexel.edu/handle/1860/318.

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15

Hughes, David. "The local free volume and other properties of synthetic and biopolymers : the effect of chemical and modification, matrix composition and environmental conditions." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702746.

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The focus of this thesis is the investigation of changes in the local free volume and related properties in complex polymeric systems of immediate interest to industry using positron annihilation lifetime spectroscopy (PALS) in conjunction with a number of complementary techniques. PALS and differential scanning calorimetry (DSC) were used to investigate the temperature dependence of the local free volume hole size distribution parameters and the thermal transitions in a series of poly( dimethylsiloxane) based elastomers where meta-carborane was incorporated into the elastomer network via two

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16

Silva, Francenya Kelley Lopes da. "Produção de quitinase por paenibacillus illinoisensis imobilizados em matriz de alginato." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8516.

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Submitted by Liliane Ferreira (ljuvencia30@gmail.com) on 2018-05-25T15:44:48Z No. of bitstreams: 2 Dissertação - Francenya Kelley Lopes da Silva - 2018.pdf: 2672570 bytes, checksum: c14c9fc750994778f5b01e31548559c8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-05-28T11:22:15Z (GMT) No. of bitstreams: 2 Dissertação - Francenya Kelley Lopes da Silva - 2018.pdf: 2672570 bytes, checksum: c14c9fc750994778f5b01e31548559c8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf

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17

Bashir, Sajid. "The development of matrix assisted laser desorption ionization time of flight mass spectrometry and its application to the study of polymers and biopolymers." Thesis, University of Warwick, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246771.

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18

Kleinubing, Sirlene Adriana 1980. "Liberação controlada da oxitetraciclina encapsulada em matriz de alginato/quitosana recoberta com Acril-EZE® MP em leito fluidizado." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266562.

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Orientador: Lucia Helena Innocentini Mei<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-22T20:49:29Z (GMT). No. of bitstreams: 1 Kleinubing_SirleneAdriana_M.pdf: 3412137 bytes, checksum: 4c9018ce01be800e79a8dbd49b20fe27 (MD5) Previous issue date: 2013<br>Resumo: O presente trabalho fundamenta-se no desenvolvimento de micropartículas de polímeros naturais para utilização em sistemas de liberação gastrorresistentes, onde o fármaco passa pelo meio gástrico intacto, permitindo sua absorção apenas no meio entér

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19

Patel, Dhaval Pradipkumar. "Novel PEG-elastin copolymer for tissue engineered vascular grafts." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45811.

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The growing incidences of coronary artery bypass graft surgeries have triggered a need to engineer a viable small diameter blood vessel substitute. An ideal tissue engineered vascular graft should mimic the microenvironment of a native blood vessel, while providing the adequate compliance post-implantation. Current vascular graft technologies lack the ability to promote vascular ECM deposition, leading to a compliance mismatch and ultimately, graft failure. Hence, in order to engineer suitable vascular grafts, this thesis describes the synthesis and characterization of novel elastin mimetic pe

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20

Alvarez, David A. "The development of time-of-flight mass spectrometry techniques for studying the surface of Europa for astrobiology." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2009m/alvarez.pdf.

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21

Pimentel, José Rodrigo Valim. "Emprego de matriz polimérica biodegradável em dispositivos vaginais para liberação sustentada de progesterona em fêmeas bovinas: testes in vitro e in vivo." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/10/10131/tde-20032007-085942/.

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Com o aumento do número de animais inseminados por IATF (inseminação artificial em tempo fixo), a diminuição de custos e o incremento de índices reprodutivos têm sido os objetivos de vários grupos de pesquisa. Nos protocolos de IATF utilizados, empregam-se dispositivos de liberação sustentada de progesterona (P4), que são, em sua maioria, constituídos de um esqueleto de nylon, recoberto com uma camada de silicone com P4 . Visando a diminuição dos custos de produção e impacto ambiental, foi desenvolvido um dispositivo à base de biopolímeros. Neste estudo, foram comparados dispositivos confeccio

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22

Fakraoui, Oumaima. "Corrélation entre les propriétés diélectriques et mécaniques de nanocomposites à matrice polymère." Electronic Thesis or Diss., Université de Lorraine, 2024. http://www.theses.fr/2024LORR0161.

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Dans le domaine des sciences des matériaux, la corrélation entre les propriétés diélectriques et mécaniques des nanocomposites polymères revêt une importance significative. Cette approche permet de prédire les comportements diélectriques à partir des caractéristiques mécaniques, et inversement, offrant ainsi une méthode alternative pour la caractérisation des matériaux, notamment lorsque les essais expérimentaux sont restreints. L'intégration de modèles fractionnaires pour établir cette corrélation représente une avancée innovante, permettant d'optimiser les performances des matériaux dans div

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23

Lanfer, Babette. "Aligned Fibrillar Collagen Matrices for Tissue Engineering." Doctoral thesis, 2009. https://tud.qucosa.de/id/qucosa%3A25289.

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The desire for repair of tissue defects and injury is the major need prompting research into tissue engineering. Engineering of anisotropic tissues requires production of ordered substrates that orient cells preferentially and support cell viability and differentiation. Towards this goal, this thesis investigated methodologies to align extracellular matrix structures in vitro to guide stem/progenitor cell behaviour for tissue regeneration. Aligned collagen fibrils were deposited on planar substrates from collagen solutions streaming through a microfluidic channel system. Collagen solution conc

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24

Yang, Tianyi. "Free energy calculations of biopolymeric systems at cellular interface." 2009. http://hdl.handle.net/2152/7477.

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Cells interact with both tethered and motile ligands in their extra-cellular environment, which mediates, initiates and regulates a series of cellular functions, such as cell adhesion, migration, morphology, proliferation, apoptosis, bi-directional signal transduction, tissue homeostasis, wound healing among others. A fundamental understanding of the thermodynamics of receptor-mediated cell interaction is necessary not only from the aspect of physiology, but also for bioengineering applications, e.g. drug discovery, tissue engineering and biomaterial fabrication. Our models on free energy calc

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25

Gohrbandt, Anne. "Synthese von Cellulose- und Ligninestern als Matrixmaterialien für Biocomposite – Einfluss von Art und Anzahl der Substituenten auf die thermischen und mechanischen Eigenschaften der Matrix und des Verbundmaterials." Doctoral thesis, 2017. https://tud.qucosa.de/id/qucosa%3A32255.

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Inhalt dieser Arbeit ist die Modifikation von biobasierten Matrixmaterialien, wie Cellulosederivaten mittels technisch skalierbarer Methoden, um das Potential modifizierten Matrixmaterialien für den Einsatz in grünen Compositen zu eruieren. Besonderes Augenmerk wurde auf die Faser-Matrixhaftung gelegt. Hier bietet die Modifikation des durchschnittlichen Substitutionsgrades (DS) von Celluloseestern großes Potential für eine bessere Faser- Matrixhaftung. So können sich bei verringertem DS zusätzliche Wasserstoffbrückenbindungen zu Naturfasern ausbilden, was zu einer besseren Haftung der beiden

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