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Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Kiatsimkul, Pimphan. "Use of enzymes to produce soy-based polyol for polyurethane." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4351.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed May 6, 2009). Vita. Includes bibliographical references.

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Randriantsilefisoa, Rotsiniaina [Verfasser]. "Polyol-based soft hydrogels for biorecognition and tissue engineering applications / Rotsiniaina Randriantsilefisoa." Berlin : Freie Universität Berlin, 2020. http://d-nb.info/1205314784/34.

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Río, Nieto Enrique del. "New polyurethanes from vegetable oil-based polyols." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/31904.

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Los poliuretanos son uno de los materiales poliméricos más usados debido a sus buenas propiedades. Tradicionalmente, los poliuretanos se han sintetizado a partir de derivados del petróleo, sin embargo, teniendo en cuenta motivos de sostenibilidad, se hace necesario desarrollar tecnologías más ecológicas y económicamente viables. En esta tesis se han obtenido poliuretanos con buenas propiedades mecánicas y memoria de forma a partir de polioles basados en aceites vegetales, utilizando diferentes estrategias sintéticas: A partir de oleato de metilo epoxidado, mediante polimerización por apertura

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4

Hu, Shengjun. "Production and Characterization of Bio-based Polyols and Polyurethanes from Biodiesel-derived Crude Glycerol and Lignocellulosic Biomass." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374051355.

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Almugaiteeb, Turki I. "OPTIMIZING COBALT CARBIDE BASED NANOMATERIALS BY USING NUCLEATING AGENTS AND STATISTICAL ROUTES." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4310.

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The continuous high demand on permanent magnets in industries opened new research plateau to develop alternative magnetic material. The current used permanent magnet materials in the market still suffer from high cost and insufficient magnetic or thermal properties. The central focus of this dissertation work is the optimization of cobalt carbide based nanomaterial by means of modifying polyol synthesis assisted by nucleation agent and systematic statistics using JMP software tool. In most existing literatures, producing cobalt carbide (Co2C or Co3C) lack reproducibility and consistency result

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Tu, Yuan-Chan Hsieh Fu-hung. "Polyurethane foams from novel soy-based polyols." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/6611.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 25, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Fu-hung Hsieh. Vita. Includes bibliographical references.

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Saleh, Nabil Abdulkader. "Structure-property relationships in polymer-polyols-based polyurethane elastomers." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/35588.

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Polyurethanes are a class of materials which can be regarded as filling the gap between rubbery elastomers and rigid plastics and metals. They can exhibit both high elongation and resilience, while retaining high modulus which make them unique for a wide variety of applications in which both stiffness and extensibility is needed. It is now widely accepted that the diverse properties of these copolymers are attributed to the existence of a two phase microstructure. One phase is regarded as a glassy or hard segment, whereas the other phase is considered to be rubbery and to give soft segments. T

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Lubguban, Arnold A. Suppes Galen J. "Synthesis and testing of soy-based polyols phosphate and glycerolysis oligomers /." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6161.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 15, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Galen J. Suppes Vita. Includes bibliographical references.

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9

Benedetti, Pablo. "Conversion de polyols sur catalyseurs à base de nickel." Poitiers, 1994. http://www.theses.fr/1994POIT2264.

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L'etude de la conversion de polyols sur catalyseurs a base de nickel a ete realisee a partir de deux types de catalyseurs de base: nickel raney et nickel depose sur charbon actif. Le nickel raney utilise presente une aire b. E. T. ; de 65 m#2/g et une surface de nickel accessible de 25,4 m#2/g catalyseur. Il est constitue de 90% de nickel, essentiellement metallique, et de 10% d'aluminium (alumine et alliage ni#2al#3). Des catalyseurs au nickel depose sur charbon (15% en masse) ont une tres faible dispersion (d1%). Le nickel sous forme raney ou depose sur charbon peut etre modifie par d'autres

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10

Lopes, Adrien. "Synthèse de nouveaux monomères à base de polyols biosourcés." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10206.

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Face à la raréfaction des ressources fossiles et à la prise de conscience des enjeux environnementaux actuels, la recherche et le développement d’une chimie verte et durable est nécessaire. Cela comprend notamment la nécessité de s’affranchir de l’utilisation des ressources non renouvelables. La conception de plastiques, qui représente une part importante de la consommation en ressources fossiles, à partir de sources alternatives est donc un défi compte tenu des problématiques actuelles. Dans l’optique de ne pas mimer les produits pétro-sourcés existants à partir de la biomasse, qui ne seraien

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Lopes, Adrien. "Synthèse de nouveaux monomères à base de polyols biosourcés." Electronic Thesis or Diss., Lille 1, 2017. https://pepite-depot.univ-lille.fr/LIBRE/EDSMRE/2017/50376-2017-Lopes.pdf.

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Face à la raréfaction des ressources fossiles et à la prise de conscience des enjeux environnementaux actuels, la recherche et le développement d’une chimie verte et durable est nécessaire. Cela comprend notamment la nécessité de s’affranchir de l’utilisation des ressources non renouvelables. La conception de plastiques, qui représente une part importante de la consommation en ressources fossiles, à partir de sources alternatives est donc un défi compte tenu des problématiques actuelles. Dans l’optique de ne pas mimer les produits pétro-sourcés existants à partir de la biomasse, qui ne seraien

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12

Zhang, Xiang. "Hybrid Eco-LCA of emerging cellulosic ethanol systems and crude glycerin based polyols." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420150187.

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13

Klein, Jan. "Efficient collision detection for point and polygon based models." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976777029.

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14

Harvey, John Andrew 1975. "Blinking cubes : a method for polygon-based scene reconstruction." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/49661.

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Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.<br>Includes bibliographical references (p. 50-51).<br>by John Andrew Harvey.<br>S.B.and M.Eng.

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15

Highfield, Julian Charles. "Polygon-based hidden surface elimination algorithms : serial and parallel." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/33016.

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Chapter 1 introduces the need for rapid solutions of hidden surface elimination (HSE) problems in the interactive display of objects and scenes, as used in many application areas such as flight and driving simulators and CAD systems. It reviews the existing approaches to high-performance computer graphics and to parallel computing. It then introduces the central tenet of this thesis: that general purpose parallel computers may be usefully applied to the solution of HSE problems. Finally it introduces a set of metrics for describing sets of scene data, and applies them to the test scenes used i

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16

Clark, Candyce. "Polynuclear biomolecular-supported rare earth coordination compounds : towards a new generation of lanthanide-based drugs." Thesis, Nelson Mandela Metropolitan University, 2014. http://hdl.handle.net/10948/d1020778.

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Galactitol and cis,cis,cis-1,3,5-cyclohexanetriol are polyols that are ideal examples of model compounds for ligands with lanthanide ions as they have their hydroxyl groups in favourable steric arrangement. Several complexes were synthesised with both lanthanide chloride and lanthanide nitrate salts with galactitol, and a variety of structures, both polymeric and monomeric, were observed. In all these complexes, galactitol acted as a bridging molecule between the lanthanide ions. A notable difference was the lanthanum chloride–galactitol complex that showed both chloride and galactitol bridgin

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17

Turker, Mustafa. "Polygon-based image analysis within an integrated GIS/RS environment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23878.pdf.

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Czech, Przemyslaw. "Molecular dynamics of polyerethanes bases on hyperbranched polymers." Lyon 1, 2006. http://www.theses.fr/2006LYO10127.

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19

Ozdarici, Asli. "Comparison Of Different Spatial Resolution Images For Polygon-based Crop Mapping." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606643/index.pdf.

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Polygon-based classification applied on the unitemporal SPOT4 XS, SPOT5 XS, IKONOS XS, QuickBird XS and QuickBird Pansharpaned (PS) images is described. The study site is an agricultural area located near Karacabey, Turkey covering an area of about 95 km2. The objective was to assess the effect of the spatial resolution on the polygon-based classification of agricultural crops. Both the post-polygon and pre-polygon classifications were carried out. In the post-polygon classification, first, the images were classified on per-pixel basis through a Maximum Likelihood classifier. Then, for each fi

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20

Dichtl, Johann. "On 2D SLAM for Large Indoor Spaces - A Polygon-Based Solution." Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2019. http://www.theses.fr/2019MTLD0006.

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Le SLAM d'espaces intérieurs est un sujet important en robotique. La majorité des solutions actuelles se basent sur une carte sous forme de grille 2D. Bien que permettant de réaliser des cartographies satisfaisantes, cette solution admet des limites liées à la quantité importante de mémoire qu'elle requiert. Dans cette thèse, nous introduisons PolySLAM un algorithme de SLAM qui permet de produire des cartes vectorielles 2D à base de polygones<br>Indoor SLAM and exploration is an important topic in robotics. Most solutions today work with a 2D grid representation as map model, both for the inte

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21

Rodrigues, José Carlos. "Síntese e caracterização de macromoléculas do tipo Poli(Ácido carboxílico)-Poli(Eter-poliol) com propriedades termoplásticas e termorrígidas e avaliação de propriedades mecânicas cerâmicos à base de caulim." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-04112009-090435/.

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Este trabalho apresenta o estudo de um sistema polimérico bi-componente formado por Poli(Ácido carboxílico)-Poli(Eter-poliol), constituído primariamente de um polímero acrílico polimerizado pelo processo de polimerização em solução aquosa por mecanismo de radicais livres ao qual foi adicionado seqüencialmente, um Poli(Eter-poliol), ambos de baixo peso molecular médio. Tal sistema tem por finalidade atuar como dispersante-ligante em sistema cerâmico à base de caulim CADAM, uma vez que este sistema apresenta propriedades termoplásticas e termorrígidas a diferentes temperaturas. Foram sint

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22

Goss, Keith Michael. "Multi-dimensional polygon-based rendering for motion blur and depth of field." Thesis, Brunel University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294033.

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NAJA, JAMAL. "Préparation de catalyseurs bimétalliques à base de cuivre : étude de leur utilisation en activation des polyols." Poitiers, 1992. http://www.theses.fr/1992POIT2270.

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En presence de cuivre de raney a temperature superieure a 200c, en phase aqueuse et sous pression d'hydrogene, le mecanisme de degradation des polyols precedemment etabli, fait intervenir des etapes d'hydrodeshydrogenation et des reactions de coupure des liaisons c-c et c-o en presence d'un reactif nucleophile. La surface du cuivre de raney dans l'eau est constituee de cuivre metallique partiellement recouvert de cu(1) sous forme d'hydroxydes. Ainsi ce catalyseur apparait comme bifonctionnel, presentant en surface une activite metallique hydrodeshydrogenante et les proprietes d'un reactif nucl

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Charlemagne, Dominique. "Synthèse enzymatique de surfactants non ioniques à base d'huile végétale." Compiègne, 1994. http://www.theses.fr/1994COMPD713.

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Le travail réalisé, dans le but d'obtenir des surfactants non-ioniques, a consisté à utiliser des substrats d'origine végétale, dans un procédé de synthèse non toxique, sans solvant, à l'aide d'un biocatalyseur, une lipase immobilisée. L'objectif de cette étude est d'effectuer une réaction entre deux synthons de polarités différentes, donc faiblement réactifs, sans utiliser de moyens altérants ou toxiques, dans le but de produire un composé présentant des propriétés tensio-actives. Dans une première partie, nous faisons un rappel sur la nature et les propriétés des surfactants. Puis nous donno

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Bach, Delpeuch Antoine. "Etude du mécanisme de la réaction d'oxydation de l'éthanol sur électrocatalyseurs à base de Pt, Rh, SnO2 sur support carboné en milieu acide." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI089/document.

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L'étude du mécanisme de la réaction d'oxydation de l'éthanol (EOR) a été réalisée sur des électrocatalyseurs bi- et tri-métalliques à base de Pt, Rh et SnO2 sur support carboné à l'aide de méthodes électrochimiques couplées (DEMS, in situ FTIR). Deux importantes problématiques de l'EOR ont été abordées: la déshydrogénation de la molécule d'éthanol et la cassure de sa liaison C-C.L'investigation de certains paramètres expérimentaux, comme l'épaisseur de la couche d'électrocatalyseur, a permis de démontrer q'une couche active épaisse conduit à une meilleure électrooxydation plus complète de l'ét

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Dulphy, Hervé. "Synthèse d'auxiliaires et de blocs de base chiraux à partir de polyols et d'un tartrate : étude de leur potentiel en synthèse asymétrique." Aix-Marseille 3, 1993. http://www.theses.fr/1993AIX30080.

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Les differents travaux effectues ont pour objet la synthese d'auxiliaires chiraux et de blocs chiraux a partir de polyols ou de l'acide tartrique et l'utilisation de ces derives chiraux en synthese asymetrique. Nous avons mis au point une voie d'acces simple a d'interessants derives du 1,3-dioxolane substitues en 4 a partir du glyphoral, solvant commercial. La methoxymethylation du l-det a ete utilisee pour definir une strategie polyvalente de synthese d'auxiliaires chiraux. Des molecules homochirales tres differentes ont pu etre preparees ainsi avec d'excellents rendements. L'etude du mecanis

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Tito, Quilla Owaldo. "Resistencia al desgaste de un elastómero de poliuretano elaborado a partir de un poliol de base biológica." Master's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/20062.

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Se elaboraron poliuretanos elastoméricos (PUE) a partir de un poliol de base biológica, el diol dimero de ácido graso (FADD), un poliol convencional (politetrametileno éter glicol-PTMEG) y el diisocianato de 4,4-difenilmetano. Se investigó la influencia del poliol FADD sobre la resistencia al desgaste y la separación de microfases de este material elastomérico. El poliuretano elastomérico fue elaborado mediante el método del prepolimero, ósea en dos etapas. En la primera etapa, se sintetizó un prepolímero de poliuretano usando diisocianato de 4,4'-difenilmetano (MDI) y politetrametileno éter g

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Landini, Christian [Verfasser], Regina [Akademischer Betreuer] Palkovits, and Marcel [Akademischer Betreuer] Liauw. "Structure-activity correlation for Re- and Mo-based catalysts for the deoxydehydration of polyols / Christian Landini ; Regina Palkovits, Marcel Liauw." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1227992246/34.

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Thakur, Khageshwar. "Shadow generation Based on RE loops and their angular representations." UKnowledge, 2001. http://uknowledge.uky.edu/gradschool_theses/219.

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The initial attempt was to find efficient technique to identify shadow plylgons in the shadow-volume based shadow generation algorithm. It was observed that shadows correspond to loops of ridge edges (REs). By identifying all the non-overlapping RE loops of a 3D object, one finds all the shadow polygons and, consequently, all the shadows it generates on other objects as well as shadows it generates on itself. This, however, requires extensive edge-edge intersection tests.It was subsequently realized that by storing the angular representations of the RE looks in a look up table, one can avoid t

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Melo, Durán Diego. "Feed-associated factors to xylanase response in corn-based poultry diets." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/673972.

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La producció avícola enfronta diversos desafiaments relacionats amb l’ús dels recursos naturals, sent l’eficiència alimentària el factor que pot ser influenciat mitjançant l’ús de diferents estratègies nutricionals. L’ús adequat d’enzims exògenes, com la xilanasa, pot millorar el rendiment productiu, la conversió alimentària, la salut intestinal i millorar els problemes ambientals, a causa de la menor excreció de nutrients no digerits. D’aquesta manera, el present treball busca incrementar el coneixement sobre els mecanismes d’acció suggerits d’aquest enzim així com investigar la rellevància d

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Östman, Alexander. "Non-centralized distributed algorithm to locate nearby servers based on player positions for a MMOG server cluster." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186714.

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In this thesis a non-centralized algorithm is proposed to locate nearby servers based on their players’ positions in a massive multiplayer online game server cluster. The purpose of this is to enable that players can visually see each other even though they are connected to different servers. By utilizing peer to peer connection between the servers the algorithm is tolerant against possible hardware failures. The algorithm simplifies the data sent over the network with a new concave polygon creation algorithm which works in linear execution time, enabling fast computations for real-time games.

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Mifleur, Alexis. "Hydroalcoxylation du butadiène par catalyseurs à base de nickel, vers la fonctionnalisation d’alcools biosourcés." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10127.

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Nous avons décrit lors de ces travaux une nouvelle méthode de synthèse d’éthers via l’hydroalcoxylation sélective des diènes par des alcools à partir de catalyseurs à base de nickel. Les différents paramètres régissant la réactivité et la sélectivité pour cette réaction ont été identifiés et optimisés dans le but de conduire à des rendements optimisés. Afin d’exemplifier cette méthodologie, de nouveaux produits ont été synthétisés à partir d’une série d’alcools et de diènes. Dans le cadre de la valorisation de la biomasse, nous nous sommes aussi intéressés à l’hydroalcoxylation du butadiène pa

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Houssein, Dania. "Micelles complexes de polyions à base de copolymères à blocs double hydrophiles et d’homopolyélectrolytes : Etudes physico-chimiques et applications à la synthèse de matériaux nanostructurés." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2013. http://www.theses.fr/2012ENCM0028.

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Les micelles complexes de polyions, ou « micelles PIC », formées par interaction électrostatique entre un copolymère à blocs double hydrophile neutre-ionique (DHBC) et un homopolyélectrolyte de charge opposée au DHBC possèdent des propriétés particulièrement intéressantes : solubilité des polyélectrolytes dans l'eau, stabilité des micelles, contrôle de l'association/dissociation micellaire par divers stimuli (pH, force ionique, irradiation lumineuse…). Dans cette thèse, les propriétés physico-chimiques des micelles PIC de type DHBC neutre-cationique/homopolymère anionique et DHBC neutre-anioni

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Yuan, Jen-Hung, and 袁任宏. "Liquefied Rice-husk, Pineapple-skin Polyol Based Polyurethane Crosslinked Epoxy." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/emap6h.

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Hwang, Yueh-Fei, and 黃月妃. "Miture Design Approach to PEA-PDEA-PTEA Ternary Polyol-Based Waterborne Polyurethane." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/18712634864229720547.

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Chang, Yu-Sen, and 張有森. "Cu-BASED CATALYSTS PREPARED BY POLYOL METHOD FOR METHANOL STEAM REFORMING REACTION." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/42617465644561813059.

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碩士<br>大同大學<br>化學工程研究所<br>91<br>The methanol steam reforming reaction is used to produce hydrogen, and hydrogen is used as the fuel in the fuel cell. This research is to develop the Cu-based catalysts with high conversions at low temperature (200~350 ℃). In the experiment, γ-Al2O3 was used as the support, and copper acetate and znic acetate as the precursors. The polyol process was utilized with various proportions of precursors to prepare mono-dispersed copper and znic metallic particles that were supported on the γ-Al2O3. After drying, calcinations and reduction, the catalysts were used for t

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Wu, Yu, and 吳伃. "Properties of Polyurethane Resins Prepared from Liquefied Acacia confusa-based Alkyd Polyol." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/qw6yak.

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碩士<br>國立中興大學<br>森林學系所<br>102<br>In this study, Acacia confusa (Taiwan acacia) wood powders were liquefied in the mixture of ethylene glycol (EG)/ethylene carbonate (EC) with different weight ratios. H2SO4 was used as the catalyst and the liquefaction was undergone at 150oC for 60 min. The liquefied woods (LW) were then used as raw materials to react with adipic acid/phthalic anhydride (8/2; w/w) for synthesizing alkyd resins as alkyd polyols with the OH/COOH molar ratios of 1.6, 1.8 and 2.0. Furthermore, these alkyd resins were mixed with isocyanates (Desmodur N and Desmodur L) by the NCO/OH m

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Jiang, Zong-Chen, and 蔣宗辰. "The Study of Waterborne Polyurethane Based on a Polyol from Dimerised Fatty Acid." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/j59tv4.

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碩士<br>國立中央大學<br>化學工程與材料工程研究所<br>97<br>The study is synthesis waterborne polyurethane (WPU) by non-polar polyol (priplast 1838). Obviate the effect of hydrodic bonds between hard segment and soft segment, it’s can be reached high phase separate. By the property of polyol (priplast 1838): hydrolytic and oxidative stability, WPU can decrease the water absorbtion. The polyol is Priplast 1838 that made by Uniqema company. It’s dimerised fatty acid monomers. Because Saturated hydrocarbon and absence of ether links, it have stability against chemical attacked and hydrolytic. At present, it’s on

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Hsu, Chin-Yu, and 許欽宇. "Improving the hydrogen absorption abilities of magnesium based alloy by polyol process treatment." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/29398523209435941572.

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碩士<br>國立臺灣海洋大學<br>材料工程研究所<br>96<br>Our experiment was focus on metal hydrogen storage material to improve hydrogen absorption kinetic. Mg99Ni1-Xwt% Pd (X=0, 0.2, 1) and Mg90Ni10-X wt% Pd (X=0, 0.2, 1) alloys were melted and ball milled under an argon atmosphere. XRD phase analysis reveals Mg2Ni peak in both the melted and ball-milled alloys. The Mg2Ni and Pd have both catalytic and synthetic effects on improving the hydrogen sorption kinetics of the alloy. The results of thermodynamic analysis of magnesium hydride correspond to the values of differential scanning calorimetry measurements. Ball

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Knoll, Matthias S. G., Cédric Giraudet, Christian J. Hahn, Michael H. Rausch, and Andreas P. Fröba. "Simultaneous study of molecular and micelle diffusion in polyol-based microemulsions with CO²-swollen micelles by dynamic light scattering." 2019. https://ul.qucosa.de/id/qucosa%3A72427.

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Simão, Miguel Martim Chambel. "Skin sensors for health care: paper-based flexible and wearable pressure sensor." Master's thesis, 2021. http://hdl.handle.net/10362/134280.

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The interest and need in portable, comfortable and durable health care sensors have increased along the years, due to their practicability and potential in helping people monitoring their vital signs. However, an all biodegradable low-cost sensor still poses a challenge to fabricate. So, cellulose is being used in the nanoscale form, due to filling all the necessary requirements with their excellent properties. The same can be said for metals like gold, silver and copper, which in the form of nanowires makes them great alternatives as sensing materials for pressure sensors. This work aims to

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GUMINA, BIANCA. "Sustainable conversion of biomass derived cellulose by using heterogeneous palladium based catalysts." Doctoral thesis, 2018. http://hdl.handle.net/11570/3131227.

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This doctoral work is focused on the sustainable valorization of cellulose and its derivable molecules, through the application of the hydrogenolysis technology, by using heterogeneous Pd-based catalysts, in order to achieve products with high-added values, such as chemicals and fuels. In particular, the study of hydrogenolysis has been conceived with a bottom-up approach starting from polyols, namely sorbitol (C6) and shorter polyols (C5-C2), to approach finally the cellulose, with the aim to unravel the reactivity and selectivity, and to understand the mechanism of reactions involved. This

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YUAN, YANG MIN, and 楊敏原. "Study of Mechanical Properties of Polyurethane Based on Polyols and Toluene Diisocyanate." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/84040663559600044337.

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碩士<br>靜宜大學<br>應用化學系<br>89<br>Polyurethanes have been prepared from TDI and two kinds of polyols, PPG and PTMEG, based on two polyols PPG (polypropylene glycol) (diol or triol) or PTMEG (polytetramethylene ether glycol) and TDI(toluene diisocyanate) were synthesized in various concentrations of extender MOCA(3,3’-dichloro-4,4’-diamino-diphenylmethane) with different equivalent ratio NCO/OH 1.04~1.44, and at different temperature .The mechanical and physical properties including tensile strength, hardness, tear strength, elasticity ,resistant abrasion, resistant acid and alkali properties, et

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Chi, Cheng-Hung, and 紀政宏. "Study on the polygon-based Kinoform computer-generated hologram." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/20311903325112173238.

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碩士<br>國立交通大學<br>電子物理系所<br>103<br>We present a method to create a computer-generated hologram (CGH) which is made from the 3D computer graphic models composed of 2D polygons. As the developing of technique of computer graphic, this promising approach of making CGH is getting popular. We follow the analytical model proposed by Professor L. Ahrenberg in 2008 with some modification. The analytical model is used to avoid complicated FFT computation to reduce time consuming. We use Misfit Model 3D as the 3D object creating program. Then load the object and process the calculation by MATLAB. To displ

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Chu, Chen-Piau, and 朱振標. "Construction and Application of Polygon-based Irrigation Management GIS." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/65d959.

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碩士<br>國立雲林科技大學<br>資訊管理研究所<br>88<br>Irrigation management are burdensome and complicated mainly due to the vast expanse of irrigating area and changeful cadastral data. The computation tool for developed management information system in Irrigation Association have shifted from tradition computer system to GIS. It can be found from many established examples that GIS has played an important role in develop irrigation management system. However, the geographic database has not been updated according to the requirements of Irrigation Association. As a result, the quality in decision-making can be

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Durocher, Stéphane. "Graph-theoretic and geometric algorithms associated with moment-based polygon reconstruction." Thesis, 1999. http://hdl.handle.net/2429/9688.

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The problem of reconstructing an unknown polygonal shape P, viewed as a region in the complex plane, from a finite number of its complex moments is motivated by a number of mathematical, computational, and application-oriented considerations. Complex moment information can be derived from such diverse physical processes as tomographic (line integral) measurement, exterior gravitational, or magnetic field measurement, or thermal radiation measurement, associated with an otherwise unspecified object [GMV99, M V K W 9 5 , SB86]. Milanfar et al. [MVKW95], building on earlier work of Davis [

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Fan, Chang-Lin, and 范昌霖. "Study on the preparation and characteristic of water-based polyurethane with different polyols and hydrophilic groups." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/j5ybeh.

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碩士<br>國立勤益科技大學<br>化工與材料工程系<br>106<br>Nowadays, with ever-increasing environmental protection and health awareness, water-based polyurethane dispersions (PUDs) have been taking importance in the past few decades. Thus, water-based polyurethane have been replacing solvent-base polyurethane in various applications such as adhesives and coating materials because of the advantage of non-toxic, environmentally friendly, good mechanical properties, wear resistance and high elasticity. In this study, water-based polyurethane dispersions were prepared by polyaddition reaction using different structu

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Klein, Jan [Verfasser]. "Efficient collision detection for point and polygon based models / von Jan Klein." 2005. http://d-nb.info/976777029/34.

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Liao, Heng-Kuang, and 廖恆廣. "A Study of the Shading Effect in Polygon-Based Computer-Generated Hologram." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/8e8pfn.

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碩士<br>逢甲大學<br>光電學系<br>104<br>Nowadays, people pursue the stereoscopic display. Holography is one of the display techniques which can reconstruct three-dimensional image. Compared to other methods which demand the users to wear stereoscopic glasses, holography can exhibit correct depth information directly. Computer-generated hologram is the technique that it creates a computer model to replace an actual object, and uses computer algorithms to compute the holographic interference fringes. In this thesis, we used a polygonal model to produce a computer-generated hologram. In computing the comput

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Soliman, Ghareb Mohamed. "Polysaccharide-based Polyion Complex Micelles as New Delivery Systems for Hydrophilic Cationic Drugs." Thèse, 2009. http://hdl.handle.net/1866/3844.

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Les micelles polyioniques ont émergé comme des systèmes prometteurs de relargage de médicaments hydrophiles ioniques. Le but de cette étude était le développement des micelles polyioniques à base de dextrane pour la relargage de médicaments hydrophiles cationiques utilisant une nouvelle famille de copolymères bloc carboxymethyldextran-poly(éthylène glycol) (CMD-PEG). Quatre copolymères CMD-PEG ont été préparés dont deux copolymères identiques en termes de longueurs des blocs de CMD et de PEG mais différent en termes de densité de charges du bloc CMD; et deux autres copolymères dans lesquels le

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