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Dissertations / Theses on the topic 'Glasses'

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1

Leuzzi, Luca. "Thermodynamics of glassy systems glasses, spin glasses and optimization /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/66345.

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2

Wootton, Andrew Michael. "Silicon oxycarbide glasses and glass-ceramics." Thesis, University of Warwick, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310015.

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3

Rappensberger, Csaba Ferenc. "Novel rare-earth aluminosilicate glasses and glass-ceramics." Thesis, University of Warwick, 1996. http://wrap.warwick.ac.uk/56937/.

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4

Zhang, Endang. "Fibre reinforcement of oxynitride glasses and glass-ceramics." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320017.

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5

Conca, Luca. "Mechanical properties of polymer glasses : Mechanical properties of polymer glasses." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1050/document.

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Ce manuscrit présente des récentes extensions au modèle PFVD, basé sur l'hétérogénéité de la dynamique des polymères vitreux à l'échelle de quelques nanomètres et résolu par simulation en 3D, afin de fournir une description physique unifiée des propriétés mécaniques et dynamiques des polymères vitreux soumis à déformation plastique. Trois sujets principaux sont traités : La plastification. Sous déformation, les polymères atteignent le seuil de plasticité (yield) à quelques pourcents de déformation et quelques dizaines de MPa. Nous proposons que l'énergie élastique absorbée à l'échelle des hété
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6

Brüning, Ralf. "Structural relaxation and the glass transition in metallic glasses." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74345.

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This thesis presents for the first time direct structural measurements of both reversible and irreversible structural relaxation and the glass transition in the metal-metalloid glass Pd$ sb{40}$Ni$ sb{40}$P$ sb{20}$. The techniques have been x-ray diffraction and Mossbauer spectroscopy, and a new analysis method for changes of amorphous diffraction patterns was developed.<br>It is found that irreversible relaxation proceeds by many local shear-type motions involving the metal atoms, and that it is accompanied by a small densification. Reversible relaxation at high annealing temperatures entail
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7

De, Mestral François. "Calcium phosphate glasses and glass-ceramics for medical applications." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65405.

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8

Kansal, Ishu. "Diopside-fluorapatite-wollastonite based bioactive glasses and glass-ceramics." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14827.

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Doutoramento em Ciência e Engenharia dos Materiais<br>Bioactive glasses and glass–ceramics are a class of biomaterials which elicit special response on their surface when in contact with biological fluids, leading to strong bonding to living tissue. This particular trait along with good sintering ability and high mechanical strength make them ideal materials for scaffold fabrication. The work presented in this thesis is directed towards understanding the composition-structure-property relationships in potentially bioactive glasses designed in CaOMgOP2O5SiO2F system, in some cases wit
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9

Goel, Ashutosh. "Clinopyroxene based glasses and glass-ceramics for functional applications." Doctoral thesis, Universidade de Aveiro, 2009. http://hdl.handle.net/10773/2323.

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Doutoramento em Ciência e Engenharia de Materiais<br>As piroxenas são um vasto grupo de silicatos minerais encontrados em muitas rochas ígneas e metamórficas. Na sua forma mais simples, estes silicatos são constituídas por cadeias de SiO3 ligando grupos tetrahédricos de SiO4. A fórmula química geral das piroxenas é M2M1T2O6, onde M2 se refere a catiões geralmente em uma coordenação octaédrica distorcida (Mg2+, Fe2+, Mn2+, Li+, Ca2+, Na+), M1 refere-se a catiões numa coordenação octaédrica regular (Al3+, Fe3+, Ti4+, Cr3+, V3+, Ti3+, Zr4+, Sc3+, Zn2+, Mg2+, Fe2+, Mn2+), e T a catiões em coorden
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10

Parupudi, Aarti. "Singing wine glasses." Kansas State University, 2015. http://hdl.handle.net/2097/19706.

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Master of Science<br>Computing and Information Sciences<br>Daniel A. Andresen<br>One among the many inventions of Benjamin Franklin is the Glass Armonica, a musical instrument whose sound source was a series of resonating glass vessels. However, the Irish musician Richard Pockrich is typically credited as the first to play an instrument composed of glass vessels, called the Glass Harp in 1741, by rubbing his fingers around the rims. In this project “Singing Wine Glasses”, the principle of Franklin’s glass armonica is demonstrated with a wine glass. One hand is used to hold the glass steady a
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11

Mancino, Amerigo. "Putting on Glasses." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14814/.

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Scanning people and generating realistic face models is becoming nowadays an important branch in Computer Graphics. The main applications are the creation of 3D selfies that can be immediately viewed or printed in 3D, the creation of 3D avatars for augmented or virtual reality applications, content creation for games or movies, or the developing of 3D face authentication algorithms (more robust respect to the 2D counterpart). This thesis provides an overview on a common issue that arises when scanning people wearing glasses and in turn proposes different solutions to solve or at least bypass
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12

Masood, Ansar. "Functional Metallic Glasses." Doctoral thesis, KTH, Teknisk materialfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101901.

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For decades, Metallic Glass, with its isotropic featureless structure while exhibiting outstanding mechanical properties was possible only at a high rate of quenching and with at least one dimension in the submicron regime.  This limitation was overcome with the discovery of Bulk Metallic glasses, BMGs, containing three or more elements following the additional two empirical rules of optimum geometric size differences and negative energy of mixing among the constituent elements. Since then thousands of Fe-, Ni-, Al-, Mg-, Ti- based BMGs have been discovered and comprehensively investigated mai
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13

Nobre, Fernando Dantas. "Planar spin glasses." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47590.

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14

Zamfir, Pompiliu Manuel. "Spherical spin glasses /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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15

Medina, Francelys A. Lanagan Michael Thomas. "Impedance spectroscopy studies of silica-titania glasses and glass-ceramics." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/PSUonlyIndex/ETD-4566/index.html.

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16

Mao, Ming. "Structural relaxation and the glass transition in metal-metal glasses." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41708.

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This thesis presents the results of a systematic study on the structural relaxation and the glass transition of ternary metal-metal glasses Zr$ sb{67}$(Ni$ sb{1-x}$Cu$ sb{x}) sb{33}$. Differential scanning calorimetry provides macroscopic evidence of structural changes from the compositional and temperature dependence of enthalpy change. Results from high precision x-ray diffraction and Mossbauer spectroscopy, performed mainly on $ rm Zr sb{67}Ni sb{10}Cu sb{23}$ (x = 0.7), complete the picture of structural changes at the atomic level.<br>Irreversible structural relaxation leads to densificat
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17

Żalin̄ska, Beata. "Bismuth-based glasses, glass-ceramics and composites for microwave applications." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537987.

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18

Beatty, Kirk Matthew 1962. "Processing of copper aluminosilicate glasses to produce glass-copper structures." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278284.

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Copper aluminosilicate (composition Cu₂O·Al₂O₃·6SiO₂) glass was melted in an alumina crucible at 1500°C and air cooled in situ. A layer of cupric oxide was grown on the polished glass surface and its thickness measured using a scanning electron microscope (SEM). The thickness of the oxide layer was found to increase parabolically with time, with a temperature dependency that was compatible with the diffusion of copper through the layer. The cupric oxide layer was reduced to copper on roughened and polished glass surfaces using a gas mixture of 3% H₂ and 97% N₂, resulting in a glass substrate c
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19

MUZI, ELISA. "Advanced nanostructured optical glasses and glass-ceramics for photonic applications." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2970993.

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20

De, Villiers Daniel Robert. "Non-silicate porous glasses obtained by the leaching of borate-rich glasses." Master's thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/22327.

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Bibliography: pages 62-65.<br>Glasses of the composition Na₂O-B₂O₃-X-Y and Na₂O-B₂O₃-Al₂o₃-X-Y were made where X and Y are two of the oxides CeO₂, HfO₂, ThO₂,Y₂O₃,ZrO₂ or Ga₂O₃. The glasses were either quenched or heat treated to promote phase separation and/or crystallization. The materials were subsequently leached in distilled water for periods of up to 96 hours. Leaching resulted in porous glasses or porous crystalline materials. The porous materials had high surface areas and good alkali resistance. A wide variety of compositions of these porous materials had BET surface areas between 100
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21

Woldt, E. "Relaxation in metallic glasses." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382709.

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22

Pizzey, Keiron. "Glasses under extreme conditions." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687334.

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The method of in-situ high-pressure neutron diffraction was used to measure the structural transformations that take place upon cold-compression of several network-forming amorphous materials. The chalcogenide glasses GeSe2, GeSe4, and As2Se3, and the silicate glass CaSiO3, were investigated using a Paris-Edinburgh press to provide compression. Where possible, the neutron diffraction results were compared to experimental results and molecular dynamics (MD) simulations provided by other research groups. Amorphous GeSe2 was studied at pressures up to 16.1 GPa using a combination of neutron diffr
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23

Lee, Joo Hee. "Structural studies of glasses." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627292.

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24

Emms, S. "Crystallisation of PFA glasses." Master's thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/8485.

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Bibliography: leaves 79-81.<br>Glasses with various compositions, falling in the CaO-AI20rSi02 and MgO-CaOAI20rSi02 systems were made, using pulverised fuel ash and silica, hydrated lime, kaolin and magnesium carbonate. Titania or ferric oxide and chromia were used as nucleants. Various crystallisation heat treatments were carried out and the nucleation and crystallisation behaviour was studied. A minimum MgO:CaO was found to be necessary for bulk nucleation to occur. The activation energy for viscous flow decreased with increased MgO:CaO ratios. This was accompanied by an increase in the surf
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25

Huang, Hong. "Synthesis and devitrification of high glass-forming ability bulk metallic glasses." Thesis, University of Surrey, 2007. http://epubs.surrey.ac.uk/842676/.

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In this thesis, literature on the production, microstructures and properties of bulk metallic glasses (BMG) has been reviewed with particular reference to glass forming ability (GFA) and alloys of the Fe-Zr-B and Zr-based BMG systems. The experimental procedures used in the research are presented and the results for the amorphous Fe80Zr12B8 ribbon and the Zr57Ti5Al10Cu20Ni8, Zr57Nb5Al10Cu20Ni8, Zr53Nb2Al8Cu30Ni7 BMGs are given and discussed. Wedge-shaped ingots of the Zr-based BMGs were produced by casting in air or water cooled copper moulds. The Zr-based BMGs were fully amorphous up to 2 mm
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26

Ponsot, Inès. "Glasses and Glass-Ceramic Components from Inorganic Waste and Novel Processing." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424636.

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Thanks to European environmental rules and regulations establishment, waste recycling has become a more and more relevant problematic. For manufacturing plants, especially those producing hazardous wastes, expenses linked to waste production have drastically increased over the last decades. In the proposed work, various hazardous and non-hazardous wastes, among: soda-lime and borosilicate glass cullet, cathode ray tubes glass, exhausted lime from fume abatement systems residues, sludge and slags from ferrous and non-ferrous metallurgy, and pre-stabilized municipal solid waste incinerators ashe
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27

Avila-Coronado, Karina E. "Triangular Relations in Structural Glasses." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1273602464.

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28

Dahlberg, Joakim. "Eye Tracking with Eye Glasses." Thesis, Umeå University, Department of Physics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-32868.

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<p>This study is concerned with the negative effects of wearing corrective lenses while using eye trackers, and the correction of those negative effects. The eye tracker technology studied is the video based real-time Pupil Center and Corneal Reflection method. With a user study, the wearing of eyeglasses is shown to cause 20 % greater errors in the accuracy of an eye tracker than when not wearing glasses. The error is shown to depend on where on the eye tracker viewing area the user is looking.</p><p>A model for ray refraction when wearing glasses was developed. Measurements on distortions on
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29

Damart, Tanguy. "Energy dissipation in oxide glasses." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1189/document.

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L'atténuation d'ondes à basse et haute fréquences dans les verres n'est pas encore bien comprise en grande partie car les phénomènes à l'origine de cette dissipation varient grandement en fonction de la fréquence. L’existence de structures complexes et organisation multi échelle dans les verres favorise l'apparition de temps de relaxation allant de la seconde à la femtoseconde et de corrélation prenant place de l’Angström à la centaine de nanomètre. A basse fréquence, une meilleur compréhension de ces phénomènes de dissipation serait bénéfique à de nombreux domaines. Par exemple, les multi-cou
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30

Serral, Gracià Rubèn. "Spin bosons and spin glasses." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/76076.

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31

Cambron, André. "Hydrogen in NiZr metallic glasses." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66070.

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32

Verrall, Diane Jane. "Structural studies of chalcogenide glasses." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333353.

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33

Gladden, L. F. "Structural studies of inorganic glasses." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233932.

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The present work has been concerned with a study of the structure of germanium and silicon dichalcogenide glasses. Initially, the aim of this research was to obtain direct structural evidence of reversible photostructural changes in bulk germanium chalcogenide glasses. However, having confirmed the existence of such changes using EXAFS and neutron scattering techniques, it became obvious that a more comprehensive understanding of the as-quenched, annealed glass structure is required before a valid interpretation of the data can be made; in particular, the extent of medium-range order in these
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34

Gillin, Peter. "Statistical mechanics of multispin glasses." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393228.

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35

Sears, Adam J. "The characterisation of stannosilicate glasses." Thesis, University of Warwick, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364575.

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36

Colborne, S. G. W. "Numerical studies of spin glasses." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233056.

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37

Viana, L. "Phase diagrams for spin glasses." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356116.

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38

Harris, Bridget. "Sites in oxidic network glasses." Thesis, University of Aberdeen, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244312.

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Chemically reactive sites in oxidic networks are discussed in terms of the electron densities provided at the sites using the optical basicity model. Ultraviolet/visible/near-infrared spectroscopy has been used to identify sites for metalions. The effect of glass composition on the coexistence and availability of these sites is considered with reference to the structure of the network and sites identified using far-infrared spectroscopy. Ultraviolet spectra of lead(II) ions indicate the existence of two types of site for Pb<sup>2+</sup> in borate and phosphate networks. The switchover from one
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39

Theodorou, Doros Nicolas. "Molecular modelling of polymeric glasses." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15293.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Bibliography: leaves 193-199.<br>by Doros Nicolas Theodorou.<br>Ph.D.
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40

Middleton, Thomas Ferguson. "Energy landscapes of model glasses." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619844.

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41

Madge, Shantanu V. "Magnesium-based bulk metallic glasses." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619797.

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42

Zhang, Yi. "Inhomogeneous deformation in metallic glasses." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613414.

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43

Pham, Khoa Nguyen. "Glasses in colloid-polymer mixtures." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/15644.

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44

Zubair, Muhammed 1962. "Aluminoborophosphosilicate glasses for microelectronics packaging." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277898.

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Glasses are used in microelectronic packaging for insulation and passivation purposes. To optimize the performance of these packages, it is necessary to investigate new glasses or improve on properties of the glasses in use. The insulating glass should have low dielectric constant, low dissipation factor, low glass transition temperature, high chemical resistivity, and a thermal expansion coefficient matching the substrate. In this study, various aluminoborophosphosilicate glasses containing Ca(Mg)O, Ca(Mg)F₂, and AlF₃ as flux were investigated. Processing temperatures for these glasses range
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45

Forto, Chungong Louis. "Structural characterisation of bioactive glasses." Thesis, Aston University, 2018. http://publications.aston.ac.uk/37835/.

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Bioactive glasses are of great importance for orthopaedic and dental applications. The macroscopic properties of bioactive glasses, and in particular the rate of dissolution, can be tailored for specific applications by altering the compositions. It is therefore important to understand a compositional-structural-relationship as this will help when predicting glass properties and for optimising the design of future glasses for clinical applications. This thesis focused on the structural-characterisation of a wide range of bioactive glasses that are important for orthopaedic and dental applicati
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46

Sahar, Md Rahim. "A study on oxyhalide glasses." Thesis, University of Warwick, 1990. http://wrap.warwick.ac.uk/106571/.

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Oxychloride glasses in the ternary system Sb2O3 - PbCl2 - ZnCl2 have been prepared. The thermal properties and the crystallisation behaviour of these glasses have been investigated by differential scanning calorimetry, viscometry, x-ray diffraction, scanning electron microscopy with energy dispersive x-ray analysis and infra-red spectroscopy. Thermal stability gaps, T1 - T4 up to 149°C are observed. The predominant crystal phases formed, depending on composition, are ZnCl2, Sb2O3 and a lead antimony oxychloride Sillan phase whose stoichiometry varies with glass composition from PbSb2O2.Cl2 to
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47

Lopatchenko, T. "How 3D without glasses work." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/44881.

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The technology of 3D without glasses is called autostereoscopy. Because this kind of three dimensional technology doesn't utilize special spectacles or headgear it became also known as glasses-less 3D or glasses free 3D. The methods of 3D technology without glasses include a parallax barrier, volumetric and holographic techniques.
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48

Magkiriadou, Sofia. "Structural Color From Colloidal Glasses." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:14226099.

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When a material has inhomogeneities at a lengthscale comparable to the wavelength of light, interference can give rise to structural colors: colors that originate from the interaction of the material's microstructure with light and do not require absorbing dyes. In this thesis we study a class of these materials, called photonic glasses, where the inhomogeneities form a dense and random arrangement. Photonic glasses have angle-independent structural colors that look like those of conventional dyes. However, when this work started, there was only a handful of colors accessible with photonic gla
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49

Wood, David John. "Fundamental studies on ionomer glasses." Thesis, University of Greenwich, 1993. http://gala.gre.ac.uk/6347/.

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Composition-structure-property relationships were studied in glasses of the type used to produce glass lonomer dental cements. These materials are currently being developed as a bone cement in joint replacement surgery. Initially, a simple quaternary (25i02-Al203-CaO-CaF2) glass was produced and was found to undergo minimal fluorine loss. This results in a glass whose composition is reproducible between batches. This composition, however, was too reactive to form a glass ionomer cement. A glass-ceramic approach was pursued to deactivate the glass and following heat treatments, cements were pro
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50

Fitzgerald, Victoria. "Structural characterisation of bioactive glasses." Thesis, University of Kent, 2007. https://kar.kent.ac.uk/38707/.

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Melt-quenched glasses containing SiO2, CaO, Na2O and P2O5, and sol-gel derived glasses containing SiO2 and CaO are known to have bioactive properties. Foaming of binary sol-gel derived bioactive glasses containing SiO2 and CaO can be used to produce 3D porous scaffolds which mimic the structure of trabecular bone, increasing the potential for these glasses to be used as bioactive bone-regenerative materials. A range of experimental techniques have been used to investigate the atomic scale structure of these materials, and also to observe the reaction mechanisms which occur when these materials
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