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Tesi sul tema "Silicone hydrogel"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Rutschilling, Ryan R. "Evaluation of Wear Experience with Silicone Hydrogel Lenses in Current Silicone Hydrogel Planned Replacement Lens Wearers." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618559832574561.

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2

Rubido, Jacinto S. "Ocular response to silicone-hydrogel contact lenses." Thesis, Aston University, 2004. http://publications.aston.ac.uk/14538/.

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The thesis investigates the ocular response to silicone-hydrogel (SiH) contact lens wear, a relatively new contact lens material that has a higher modulus of rigidity and different surface coating than used in conventional hydrogel materials. The properties of SiH materials differ significantly from conventional hydrogels and, using subjective and objective means of assessment, the thesis examines how these properties affect reflection and biometry, ocular physiology, tear film characteristics, symptomatology, adverse events and complications. A range of standard and newly designed investigati

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3

Tam, Ngai Keung. "Comfort and Compatibility of Silicone Hydrogel Contact Lenses." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4031.

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Silicone Hydrogel (SiHy) contact lenses are highly successful compared to previous soft lenses; they were developed to provide superior oxygen permeability. However, the hydrophobic natures of the silicone segments enhance lipid sorption which may diminish the lens surface wettability, clarity and comfort. While lens and lens care product are designed to remove lipid deposition, there is lack of experimental evidence to evaluate the actual performances with respect to lipid removal. An in vitro model using an artificial tear fluid containing radiolabeled lipids was employed in this thesis rese

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4

Nagapatnam, Subbaraman Lakshman. "Lysozyme Deposition Studies on Silicone Hydrogel Contact Lens Materials." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1245.

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Over 60 proteins have been detected in the tear film and among these lysozyme has attracted the greatest attention. Several techniques for elucidating the identity, quantity and conformation of lysozyme deposited on soft contact lenses have been developed. Lysozyme also deposits on the newly introduced silicone hydrogel (SH) lens materials, but in extremely low levels compared to conventional hydrogel lenses. Hence, a major analytical complication with the study of the SH contact lens materials relates to the minute quantity of deposited lysozyme. The first project of this thesis

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5

Szczotka-Flynn, Loretta B. "The Longitudinal Analysis of Silicone Hydrogel Contact Lens Study." Case Western Reserve University School of Graduate Studies / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1257182345.

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6

Schafer, Jeffrey M. "A characterization of dryness symptoms with Silicone Hydrogel contact lenses." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1407508203.

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7

Lorentz, Holly. "Lipid Deposition on Hydrogel Contact Lenses." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2963.

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The primary objective of this study was to quantify and characterise lipid deposition on soft (hydrogel) contact lenses, particularly those containing siloxane components. Studies involving a variety of <em>in vitro</em> doping and <em>in vivo</em> worn contact lenses were undertaken, in which lipid deposition was analyzed by either TLC or HPLC. Specific experiments were completed to optimize a method to extract the lipid from the lens materials, to compare the total lipid deposition on nine different hydrogel lenses and to analyze the effect that lipid deposition had on wettability. A m

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8

Harp, Lisa. "Contributions of Silicone Hydrogel Transmissibility and Tear Exchange to Corneal Oxygen Supply." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275496222.

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9

Zhao, Yibei. "Phospholipid Transport in Silicon Hydrogel Contact Lenses." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/3083.

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Dry eye syndrome has been associated with the lack of phospholipids in the tear film, leading to disruption of the tear film and subsequent irritation. Characterization of the transport and release of phospholipids from a silicone hydrogel contact lens is required to assess the possible use of these lenses for phospholipid delivery to increase patient comfort. This thesis examines the use of silicone hydrogel contact lenses as phospholipid delivery devices. Contact lenses of silicone hydrogel composition were loaded with varying amounts of radiolabeled 1,2-dimyristoyl-sn-glycero-3-phosphocholi

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10

Lewis, Kristen Oblad. "COMPARATIVE LIPIDOMICS OF HYDROGEL CONTACT LENSES IN-VITRO AND IN-VIVO." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243889772.

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11

Ashleigh, Claudia. "A double masked randomised crossover trial of two silicone hydrogel multifocal contact lenses." Thesis, London South Bank University, 2017. http://researchopen.lsbu.ac.uk/1988/.

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Purpose: To compare visual performance and acceptance of two different designs of monthly disposable silicone hydrogel multifocal contact lenses, the Air Optix Aqua Multifocal and the Biofinity Multifocal. Methods: A double masked randomised crossover trial of 62 presbyopic participants (between 41 and 60 years of age) was conducted. Participants were randomised first into either the Air Optix Aqua Multifocal or the Biofinity Multifocal lens to be worn for four weeks for each modality. There was a washout period of one week before wearing the second option. Measurements included binocular phot

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12

Rogers, Ronan. "In vitro and ex vivo wettability of hydrogel contact lenses." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2974.

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The wettability of contact lenses has become an area of intense research, with the belief that the more "hydrophilic" or wettable the lens surface is, the more comfortable the lens may be, as the posterior surface of the eyelid will move more smoothly over it, hence increasing comfort. <br /><br /> There are many ways to assess the wettability of a given material, namely sessile drop,<sup>1</sup> captive bubble <sup>2</sup> or Wilhelmy plate. <sup>3</sup> This thesis used the sessile drop method to determine the surface wettability of various hydrogel contact lens materials, by measurin

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13

Tagliaferri, Angela. "Risk Factors for Contact Lens Induced Papillary Conjunctivitis Associated with Silicone Hydrogel Contact Lens Wear." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1339094018.

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14

Read, Michael Leonard. "The impact of material surface characteristics on the clinical wetting properties of silicone hydrogel contact lenses." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/the-impact-of-material-surface-characteristics-on-the-wetting-properties-of-silicone-hydrogel-contact-lenses(f9052c88-3fe8-4467-8cda-7feb5b63c066).html.

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This PhD project investigated the ramifications of air-cured and nitrogen-cured manufacturing processes during silicone hydrogel contact lens manufacture in terms of lens surface characterisation and clinical performance. A one-hour contralateral clinical study was conducted for ten subjects to compare the clinical performance of the two study lenses. The main clinical findings were reduced levels of subjective performance, reduced surface wettability and increased deposition. Contact angle analysis showed the air-cured lenses had consistently higher advancing and receding contact angle measur

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15

Hermies, François d'. "Etudes experimentale chez le lapin et clinique chez l'homme des biomateriaux d'indentation." Nancy 1, 2000. http://www.theses.fr/2000NAN11313.

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16

Keay, Lisa Jane Optometry &amp Vision Science Faculty of Science UNSW. "Public health impact of contact lens related microbial keratitis." Awarded by:University of New South Wales. School of Optometry and Vision Science, 2006. http://handle.unsw.edu.au/1959.4/26307.

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This thesis describes the impact of contact lens-related microbial keratitis in terms of incidence and severity. Disease outcome is defined by visual outcome, costs to the healthcare system, costs to the individual and duration of disease. A successful 12-month surveillance study was conducted of the populations of Australia and New Zealand to detect all cases of contact lens-related microbial keratitis. A random telephone survey of 32,000 households in Australia and 7,500 in New Zealand accurately determined the level of use of various contact lenses in the community. The impact of new c

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17

Horne, Ryan Ruben. "Thermal and Convective Loading Methods for Releasing Hydrophobic Therapeutics from Contact Lenses." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6388.

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This thesis investigates the feasibility of loading silicone hydrogel (SiHy) contact lenses with two different hydrophobic therapeutics, latanoprost and DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine), for treatment of glaucoma and hyperemia respectively. The two methods of loading were 1) thermal loading in an aqueous medium and 2) convective loading in a solution of n-propanol. Dailies Total1® lenses prepared in this manner were tested for their loading and their release into artificial tears. Continuous release over 1-4 days at therapeutic levels is achievable from thermal loading of DMP

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18

Osborn, Tim H. "Ab Initio Simulations of Hydrogen and Lithium Adsorption on Silicene." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1283177822.

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19

Kim, Hyoun-Ee. "Gaseous corrosion of silicon carbide and silicon nitride in hydrogen /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487327695622538.

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20

Huy. "Hydrogen interaction with impurities in silicon." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2001. http://dare.uva.nl/document/59764.

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21

Radi, Babak. "Reinforced hydrogels for silicone copolymer delivery for scar remediation." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/40984/1/Babak_Radi_Thesis.pdf.

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Hypertrophic scars are formed by collagen overproduction in wounded areas and often occur in victims of severe burns. There are several methods for hypertrophic scar remediation and silicone gel therapy is one of the more successful methods. Research by others has shown that the activity of these gels may be due to migration of amphiphilic silicone oligomers from the gel and into the dermis, down-regulating production of collagen by fibroblasts. Normal silicone oil (PDMS) does not produce the same effect on fibroblasts. The main purpose of this project is the introduction of a particular amphi

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22

Ghita, M. "Hydrogen diffusion and trapping in crystalline silicon." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517282.

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23

Stübner, Ronald. "Electrical characterization of carbon-hydrogen complexes in silicon and silicon-germanium alloys." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-233055.

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In this thesis, a comprehensive study of the electrical properties of carbon-hydrogen (CH) complexes in silicon (Si) and silicon-germanium (SiGe) alloys is presented. These complexes form by the reaction of residual carbon impurities with hydrogen that is introduced either by wet chemical etching or a dc hydrogen plasma. The complexes were detected and characterized by the deep level transient spectroscopy (DLTS), Laplace DLTS, and minority carrier transient spectroscopy (MCTS) technique. With this approach, properties like the activation enthalpy for carrier emission, the capture cross sectio

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24

Burrows, Michael Z. "Role of silicon hydride bonding environment in alpha-silicon hydrogen films for c-silicon surface passivation /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 152 p, 2008. http://proquest.umi.com/pqdweb?did=1654501711&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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25

Janson, Martin. "Hydrogen diffusion and ion implantation in silicon carbide." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3482.

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<p>Secondary ion mass spectrometry (SIMS) has been employed tostudy the spatial distributions resulting from mass transportby diffusion and ion implantation in single crystal siliconcarbide (SiC). By a systematic analysis of this data,fundamental processes that govern these phenomena have beenderived.</p><p>The acceptor atoms Al and B are known to be electricallypassivated by H in SiC. By studying the thermally stimulatedredistribution of implanted deuterium (2H) in various acceptordoped structures, it is found that hydrogen forms complexeswith the doping atoms, and also interacts strongly wit

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26

O'Connell, Jacques Herman. "Characterization of hydrogen and helium implanted silicon carbide." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/979.

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This dissertation focuses on the characterization of hydrogen implanted 3C-SiC and helium implanted 6H-SiC and the interaction of silver and palladium with the SiC. The main technique used for the analysis of the implanted SiC was transmission electron microscopy (TEM), although scanning electron microscopy (SEM) and nanoindentation hardness testing were also used. Both H and He implantations were done at an ion energy of 100 keV and the total dose for both species was 1017 ions/cm2. Specimens were annealed at 1000 °C for 20 min in an inert atmosphere. The observed depth of ion damage agreed c

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27

Bowyer, Ellis T. "Electrical detection of hydrogen-like donors in silicon." Thesis, University of Surrey, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616937.

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Quantum computers have been the dream of many scientists for over thirty years but the fact such devices still consist of only a handful of quantum bits (qubits) highlights the fact that this is not a trivial concept. However the potential of powerful parallelisation, which could out perform classical computers remains a huge incentive for researchers. Interest in donors in silicon has grown since being put forward as a possible candidate for a qubit in 1998 by Kane. Group V atoms, such as phosphorus, substitute into the silicon lattice but possess an extra outer shell electron compared to the

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28

Yin, Chengying. "Hydrogen production from irradiated calcium silicate hydrate." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS355/document.

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En France, les matériaux à base de ciment sont utilisés comme matrice de conditionnement des déchets nucléaires de faible et moyenne activité. La radiolyse de l'eau est due aux déchets nucléaires stockés dans les matériaux. La formation de ses produits radiolytiques tels que le gaz H₂ doit être évaluée pour des raisons de sécurité. Les silicates de calcium hydratés (C-S-H) représentent le principal produit (50%) d'hydratation du ciment Portland (CP). L’objectif de cette étude est de comprendre les mécanismes radiolytiques de la production d'hydrogène dans les C-S-H, d'étudier l'effet d'impuret

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29

Wilkinson, Andrew Richard. "The optical properties of silicon nanocrystals and the role of hydrogen passivation /." View thesis entry in Australian Digital Program, 2006. http://thesis.anu.edu.au/public/adt-ANU20060202.111537/index.html.

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30

Luongo, Kevin. "Palladium Doped Nano Porous Silicon to Enhance Hydrogen Sensing." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3896.

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A mass manufacturable impedance based, palladium doped porous silicon sensor, was fabricated for hydrogen detection. The sensor was built using electrochemical etching to produce mesoporous silicon. Four nanometers of palladium was defused directly into the porous silicon and another four nanometers of Pd was deposited on the defused surface to enhance sensing. The sensor was tested in a sealed chamber in which the impedance was measured while hydrogen in nitrogen was ranged from 0-2 percent. Unlike conventional hydrogen sensors this sensor responded at room temperature to changes in hydrogen

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31

Brown, Andrew Richard. "Enhanced oxygen diffusion in silicon catalysed by atomic hydrogen." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46685.

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Terry, Jonathan Gordon. "Electrical characterisation of transition metals and hydrogen in silicon." Thesis, University of Manchester, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680103.

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33

Bîlteanu, Liviu. "Atomic scale simulation of hydrogen related defects in hydrogen implanted silicon - Smart Cut™ technology." Paris 11, 2010. http://www.theses.fr/2010PA112293.

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Le sujet de cette thèse est lié à l'étape d'implantation de la technologie Smart Cut™. Cette technologie utilise l'hydrogène pour transférer des couches de silicium sur des substrats isolants. Le transfert se fait par une fracture induite par la formation des défauts bidimensionnels appelés dans la littérature des plaquettes (en anglais « platelets »). Plus précisément, nous avons étudié dans le cadre de cette thèse les défauts qui apparaissent dans l'état post implantation et leur évolution de l'endommagement d'implantation vers l'état qui contient des plaquettes. L'étude est organisée en deu

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34

Wilkinson, Andrew Richard, and arw109@rsphysse anu edu au. "The Optical Properties of Silicon Nanocrystals and the Role of Hydrogen Passivation." The Australian National University. Research School of Physical Sciences and Engineering, 2006. http://thesis.anu.edu.au./public/adt-ANU20060202.111537.

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This thesis examines the optical properties of nanoscale silicon and the sensitization of Er with Si. In this context, it predominantly investigates the role of defects in limiting the luminescence of Si nanocrystals, and the removal of these defects by hydrogen passivation. The kinetics of the defect passivation process, for both molecular and atomic hydrogen, are studied in detail. Moreover, the optical absorption of Si nanocrystals and the effect of annealing environment (during nanocrystal synthesis) on the luminescence are investigated. The effect of annealing temperature and hydrogen p

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35

Abdul-Niby, Mohammed. "Photoconductive frequency resolved spectroscopy for hydrogen and helium implanted silicon." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/804439/.

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36

Martsinovich, Natalia. "Theory of defects arising from hydrogen in silicon and diamond." Thesis, University of Sussex, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409286.

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37

Hourahine, Benjamin. "A first principles study of hydrogen related defects in silicon." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324743.

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38

Pyke, Daniel James. "Hydrogen evolution and transport in semiconductors." Phd thesis, Canberra, ACT : The Australian National University, 2014. http://hdl.handle.net/1885/125142.

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Silicon-on-insulator structures are used for the fabrication of integrated electronic circuits, photonic devices and structures, and micro-electro-mechanical systems. The most common fabrication method for SOI is a hydrogen-induced cleavage technique in which ion-implanted hydrogen is employed to initiate and propagate cracks in a plane parallel to the silicon surface. Considerable research effort has been devoted to understanding this cleavage technique in (100) silicon but several fundamental issues remain unclear, including the role of stress on hydrogen platelet alignment. In addition, the

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39

Rai, Chaudhuri Anjana. "Electronic structure and bond energy trends in silicon-hydrogen and germanium-hydrogen bond activation by transition metals." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184731.

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The electronic structure factors that control Si-H and Ge-H bond activation by transition metals are investigated by means of photoelectron spectroscopy. Molecular orbital calculations are also used to gain additional insight into the orbital interactions involved in bond activation. The complexes studied have the general molecular formula (η⁵-C₅R'₅)Mn(CO)(L)HER₃, where R' is H or CH₃, L is CO or PMe₃, E is Si or Ge and R is Ph or Cl. These compounds are interesting models for catalysts in industrial processes like hydrosilation. The compounds display different stages of interaction and "activ

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40

Sampson, Gareth Milo. "Hydrogen atom and argon ion reactions for removing hydrocarbon adsorbates and contamination from silicon surfaces /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Tizard, Geoffrey Alexander. "Characterization of the Viscoelastic Fracture of Solvated Semi-Interpenetrating Polymer Network Silicone Hydrogels." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/34232.

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The unique compressive, optical, and biocompatible properties of silicone hydrogels allow them to be used in a wide variety of applications in the biomedical field. However, the relatively weak mechanical behavior, as well as the highly deformable nature of these elastomeric materials, presents a myriad of challenges when attempting to understand their constitutive and fracture properties in order to improve hydrogel manufacturing and performance in applications. In this thesis, a series of experimental techniques were developed or adapted from common engineering approaches in order to invest

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42

Höchbauer, Tobias. "On the mechanisms of hydrogen implantation induced silicon surface layer cleavage." [S.l.] : [s.n.], 2001. http://archiv.ub.uni-marburg.de/diss/z2002/0403.

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Brown, Peter William. "Chemical vapor deposition of silicon carbide in the methyltrichlorosilane-hydrogen system /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487844485899111.

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44

GUO, GUAN-SIAN, and 郭冠賢. "Development of Functional Silicone Hydrogel." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/hqjxav.

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碩士<br>國立聯合大學<br>化學工程學系碩士班<br>106<br>In our study, a sol-gel process was used to synthesize the organic-inorganic hybrid prepolymers. The prepolymers were mixed with other formulas by photo-polymerization method to obtain the high oxygen permeability and functional silicone hydrogels for the applications of soft contact lens. In addition, the effect of prepolymer’s content on the properties of the silicone hydrogels was carried out by various analysis methods. The ratio of prepolymers affects the hydrophilicity/ hydrophobicity and degree of cross-linking of hydrogels, but also influence the swe

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Tingling, Dai, and 戴廷玲. "Development and Evaluation of Silicone Hydrogel Contact Lens." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/67904680360409930718.

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碩士<br>國立聯合大學<br>化學工程學系碩士班<br>103<br>Oxygen permeability (Dk) and transmissibility (Dk/t) are important parameters used to assess the suitability of contact lenses. The oxygen permeability of the material describes its intrinsic ability to transport oxygen. In this study, we design a novel apparatus to measure Dk and Dk /t of contact lenses by the titration. The apparatus involves accurate measurement of oxygen across the material by allowing the gas (oxygen) to pass through a specially fabricated steel lens model. The expelled gas was collected by dissolution in DI water and the oxygen was mea

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46

Tsai, Ming-Chan, and 蔡明展. "Preparation and hydrophilicity of ionized silicone hydrogel films." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/znk3e3.

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碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>105<br>This study is to synthesize positively charged silicon hydrogel, so that the moisturizing agent in the preserving buffer solution can be attacted to positively charged silicon hydrogel to improve the surface wettability of contact lens. The main component of this hydrogel is hydroxyl-terminated polydimethyl siloxane (PDMS-diol), which serves as the soft segment of a polyurethane (PU) macromer. After reacting with isophorone diisocyanate (IPDI), polyethylene glycol 600 (PEG 600) was added to increase the hydrophilicity of the resultant PU. Then 2-(dimethylam

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Lorentz, Holly Irene. "Modeling In Vitro Lipid Deposition on Silicone Hydrogel and Conventional Hydrogel Contact Lens Materials." Thesis, 2011. http://hdl.handle.net/10012/6454.

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Purpose: To examine the variables that influence lipid deposition on conventional and silicone hydrogel contact lens materials and to build a physiologically relevant in vitro model of lipid deposition on contact lenses. Methods: Lipid deposition on contact lens materials can lead to discomfort and vision difficulty for lens wearers. Using a variety of radiochemical experiments and two model lipids (cholesterol and phosphatidylcholine), a number of clinically significant parameters that may influence lipid deposition were examined. • The optimization and characterization of a novel artifici

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WANG, YUN-YA, and 王韻雅. "A Patent Analysis of Contact Lens Silicone Hydrogel Technology." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/w9abu8.

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碩士<br>逢甲大學<br>科技管理碩士學位學程<br>107<br>In recent years, the proportion of myopia population in Taiwan has continued to rise. Improperly, 3C products and living habits have caused problems in the eyesight of Chinese people, and the age group of myopia has continued to decline. As teenagers and young children are more exposed to 3C products, the ratio of myopia is caused. Continued to rise, in response to advances in technology, myopia is no longer only the choice of glasses as the only corrective choice, more and more people choose contact lenses to wear, most customers for aesthetics, comfort or c

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Maram, Jyotsna. "Contact lens fitting characteristics and comfort with silicone hydrogel lenses." Thesis, 2012. http://hdl.handle.net/10012/6574.

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Abstract (sommario):

Purpose To examine soft contact lens fitting characteristics using anterior segment imaging techniques and comfort. The specific aims of each chapter are as follows: Chapter 2: To calibrate the new ZEISS VisanteTM anterior segment optical coherence tomographer (OCT) using references with known physical thickness and refractive index equal to the human cornea and to compare the Visante measures to those from a previous generation OCT (Zeiss-Humphrey OCT II). Chapter 3: The first purpose of this study was to measure the repeatability of the Visante TM OCT in a normal sample. The second was t

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50

Hsaio, Chia-Wei, and 蕭佳偉. "The development of an environmental-friendly and amphiphilic silicone hydrogel." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/fpgbuw.

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Abstract (sommario):

碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>107<br>Currently, alcohol solution is used to wash out the unreacted monomer after synthesizing silicone hydrogel contact lenses. This process will increase the costs of recycling solution and will contaminate the enviorment. In order to improve these problems, this study is aimed to synthesis an amphiphilic siloxane-macromer washable with DI-water. The synthesis included two parts. The first part was to synthesize an amphiphilic macromer from polydimethylsiloxane hydroxyl-monoterminal (PDMS-mono-OH), isophorone diisocyanate (IPDI), and poly (enthylene glycol) met

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