Dissertations / Theses on the topic 'Lens'
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Yan, Yufeng. "Photographic Fisheye Lens Design for 35mm Format Cameras." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613395.
Full textShepard, III Ralph Hamilton. "Metamaterial Lens Design." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194734.
Full textShams-Ul-Bari, Naveed. "Isospectral orbifold lens spaces." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23981.
Full textYuan, Sheng. "Aberrations of Anamorphic Optical Systems." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195267.
Full textKumar, Bharat. "The Mechanobiology of the Crystalline Lens." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587649113548924.
Full textWilson, Cynthia Nicole. "A Fully Customizable Anatomically Correct Model of the Crystalline Lens." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20130.
Full textOllinger, Christoph German Josef. "A waveguide-based lens-less x-ray microscope." Doctoral thesis, [S.l.] : [s.n.], 2006. http://webdoc.sub.gwdg.de/diss/2006/ollinger.
Full textSasián, José. "Joseph Petzval lens design approach." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627184.
Full textGao, Weichuan, and Jose Sasian. "Air lens vs aspheric surface: a lens design case study." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627181.
Full textDePianto, Daryle Joseph. "Studies on lens fiber cell gene expression & lens differentiation /." Connect to Digital dissertations. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.
Full textYang, Dingjie. "The Network Lens." Thesis, Linnaeus University, School of Computer Science, Physics and Mathematics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6626.
Full textA complex network graphics may be composed of hundreds and thousands of objects, such as nodes and edges. Each object may hold a large number of attributes that might be difficult to explore in the network visualization. Therefore, many visualization tools and approaches have been developed to gain more information from the network graphics. In this paper, we introduce the concept of the Network Lens, a new widget that assists the users to deal with a complex network. The Network Lens is an interactive tool that combines data visualization to a magic lens. With the help of the Network Lens, users can display hidden information of the elements in the network graphics based on their interest. Moreover, the Network Lens supports a series of interactive functions that give the users flexible options to define their own lenses.
Weir, I. J. M. "The thermal lens." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372116.
Full textAmador, Lui. "Deslanting the Lens." Scholarship @ Claremont, 1999. http://scholarship.claremont.edu/cgu_etd/93.
Full textCrouch, Izzy. "Beyond the Lens." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/scripps_theses/1245.
Full textShu, Daisy Yao. "TGFβ, BMP and EGF interplay in the pathogenesis of fibrotic cataract: a tale of three growth factors." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/20493.
Full textNichols, Jason Jay. "Evaporative tear film and contact lens factors associated with dry eye symptoms in contact lens wearers." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1085771728.
Full textHott, John Lester. "Photochemical alterations of ocular lens proteins." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/30087.
Full textSasian, Jose, and Yufeng Yan. "Miniature camera lens design with a freeform surface." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627187.
Full textStapleton, Fiona J. "The pathogenesis and epidemiology of contact lens related disease in cosmetic contact lens wearers." Thesis, City University London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280544.
Full textRueff, Erin M. "Contact Lens Discomfort, Vision Correction Preferences, and Accommodative Treatment in Presbyopic and Non-Presbyopic Contact Lens Wearers." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1529583462118691.
Full textMoore, Lori Briggs. "Defining Ray Sets for the Analysis of Lenslet-Based Optical Systems Including Plenoptic Cameras and Shack-Hartmann Wavefront Sensors." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/332894.
Full textValley, Pouria. "FLAT LIQUID CRYSTAL DIFFRACTIVE LENSES WITH VARIABLE FOCUS AND MAGNIFICATION." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/145737.
Full textTagliaferri, 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.
Full textSelby, Alastair Phillip. "Nanoindentation of soft contact lens materials." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/nanoindentation-of-soft-contact-lens-materials(502085d8-3325-4ea8-926c-ad75b15a557d).html.
Full textJamali, Afsoon Jamali. "LARGE AREA TUNABLE LIQUID CRYSTAL LENS." Kent State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1541671894328594.
Full textDye, Simon. "Gravitational lens mass reconstruction." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/27964.
Full textMcDermott, Joshua D. "The ovine lens cytoskeleton." Lincoln University, 2007. http://hdl.handle.net/10182/700.
Full textSparrow, John Martin. "The lens in diabetes." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238162.
Full textTomlinson, Richard J. "Lens design for manufacture." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/14554.
Full textMatos, Lennia, and Dora Herrera. "Willy Lens (1940 - 2014)." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/100137.
Full textMaytham-Bailey, Sandra. "One lens three views." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/6844.
Full textVidarsson, Freysteinn Vidar. "Dual Polarized Geodesic Lens." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286825.
Full textLutningsindex-linsantenner (GRIN), till exempel Luneburg-linsen, har attraktiva elektromagnetiska egenskaper. Den jämna förändringen i brytningsindexet garanterar att inga interna reflektioner inträffar och fokuset av de elektromagnetiska vågorna resulterar i en direkt antenn. Den största utmaningen att utforma en GRIN-lins är att bestämma de brytningsindexen som behövs. Plana linser kan man förverkliga med användning av tredimensionella homogena ytor som eliminerar utmaningen att diskretisera den kontinuerliga förändringen i brytningsindex. Denna typ av lins kallas geodetisk lins. I detta examensarbete är en dubbelpolariserad geodetisk linsantenn designad. Antennen består av två metallplattor som bildar en parallell platt vågledare som är deformerad för att efterlikna beteendet hos en Luneburg-lins. Antennen fungerar i Ka- bandet och har polarisator enhetsceller för att ändra antennens polarisationstillstånd. Polarisatorerna placeras i en cirkulär konfiguration i antennen för att bibehålla en kompakt design och ett bra skanningsområde. Elva vågledare används med 10° separation vilket resulterar i ett skanningsområde på ±50° i azimutplanet. Den slutliga designen är en linsantenn med en mittfrekvens på 28 GHz och 20 % bandbredd. Simuleringar av designen visar reflektionskoefficienter under -15 dB och crosstalk under -17 dB. Den totala effektiviteten vid 28 GHz är 90 % och över 85 % för hela frekvensbandet.
Vice, President Research Office of the. "The Lens of Language." Office of the Vice President Research, The University of British Columbia, 2008. http://hdl.handle.net/2429/2669.
Full textMcClure, Kate Alexandra. "Tear Film Dynamics Associated with Contact Lens Wear." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523579680091666.
Full textWang, Zaiqi. "Lens calcium homeostasis and selenite cataract." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-05042006-164509/.
Full textFerreira, Daniele Alves. "Reactions using whole cell biocalytic lens culinaris (lentil)." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8566.
Full textThis paper describes the use of seeds of lentil (Lens culinaris) as intact plant system in biocatalytic reactions of reduction and hydrolysis. Initially, some plant sources were evaluated for their action in the biocatalytic reduction of aromatic ketone acetophenone. The plants that showed positive results in the reduction reaction underwent determination of their protein content by the methods of Lowry and Bradford. Lens culinaris was plant species revealed that most relevant biocatalytic activity, in agreement with their high protein content (1.33 mg / mL and 1.07 mg / mL according to Bradford and Lowry methods, respectively), and thus The plant was selected for further study. Subsequently, always using the model substrate acetophenone as the reaction parameters were optimized: concentration of biocatalyst; reaction kinetics; stirring speed the reaction medium. After selecting these parameters, the bioreduction reactions were extended to other derivatives of prochiral acetophenone, which were observed with bioconversions yields and enantiomeric excess (ee) ranging from low to high percentages. Generally, were observed steric and electronic influences due to the type and relative position of the various substituents on aromatic compounds. In the case of substrates containing two different functional groups susceptible to reduction, low chemoselectivity observed. Investigated also other carbonyl compounds such as aliphatic and aromatic ketones, aromatic aldehydes and aromatic nitro compounds. In addition investigated the possibility that hydrolytic action from compounds belonging functions esters, amides and nitriles. The yields of the reactions were calculated using Gas Chromatography coupled with Mass Spectrometry (GC-MS) and Nuclear Magnetic Resonance Hydrogen (1H NMR). The enantiomeric excess (ee) were determined by High Performance Liquid Chromatography (HPLC) equipped with chiral columns.
Este trabalho relata a utilizaÃÃo das sementes de lentilha (Lens culinaris) como sistema Ãntegro de planta em reaÃÃes biocatalÃticas de reduÃÃo e hidrÃlise. Inicialmente, algumas fontes vegetais foram avaliadas quanto sua aÃÃo biocatalÃtica na reduÃÃo da cetona aromÃtica acetofenona. Os vegetais que revelaram resultados positivos na reaÃÃo de reduÃÃo foram submetidos à determinaÃÃo do seu teor de proteÃnas atravÃs dos mÃtodos de Lowry e Bradford. Lens culinaris foi à espÃcie vegetal que revelou atividade biocatalÃtica mais relevante, em acordo com seu alto teor de proteÃna (1,33 mg/mL e 1,07 mg/mL, segundo os mÃtodos de Bradford e Lowry, respectivamente), e assim, foi o vegetal selecionado para estudos mais aprofundados. Posteriormente, utilizando sempre a acetofenona como substrato modelo foram otimizados os parÃmetros reacionais: concentraÃÃo do biocatalisador; cinÃtica de reaÃÃo; velocidade de agitaÃÃo e meio reacional. ApÃs seleÃÃo desses parÃmetros, as reaÃÃes de biorreduÃÃo foram estendidas a outros derivados prÃ-quirais da acetofenona, onde foram observadas bioconversÃes com rendimentos e excessos enantiomÃricos (ee) que variaram de baixas a elevadas porcentagens. De modo geral, foram observadas influencias eletrÃnica e estÃrica devidas ao tipo e a posiÃÃo relativa dos diferentes substituintes nos compostos aromÃticos. No caso de substratos contendo dois grupos funcionais diferentes suscetÃveis de reduÃÃo, foi observada baixa quimiosseletividade. Foram investigados tambÃm outros compostos carbonilicos, como: cetonas alifÃticas e aromÃticas, aldeÃdos aromÃticos e nitrocompostos aromÃticos. Em adiÃÃo foi investigado a possibilidade de aÃÃo hidrolÃtica a partir de compostos pertencente Ãs funÃÃes Ãsteres, amidas e nitrilas. Os rendimentos das reaÃÃes foram calculados utilizando Cromatografia Gasosa acoplada à Espectrometria de Massas (CG-EM) e RessonÃncia MagnÃtica Nuclear de HidrogÃnio (RMN 1H). Os excessos enantiomÃricos (ee) foram determinados atravÃs de Cromatografia LÃquido de Alta EficiÃncia (CLAE) equipada com colunas quirais.
O'Leary, Christine Marie. "Expression of the Ets family in the lens." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.78 Mb., 100 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/1428194.
Full textTomlinson, Julie. "Calcium in relation to lens physiology and pathology." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292537.
Full textHeistand, Mark Richard. "Biomechanics of the lens capsule." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2726.
Full textBanks, Eric A. "Connexin 45.6 in lens development : a dissertation /." San Antonio : UTHSC, 2007. http://proquest.umi.com/pqdweb?did=1400957401&sid=1&Fmt=2&clientId=70986&RQT=309&VName=PQD.
Full textEom, Youngsub, Dongok Ryu, Dae Wook Kim, Seul Ki Yang, Jong Suk Song, Sug-Whan Kim, and Hyo Myung Kim. "Development of a program for toric intraocular lens calculation considering posterior corneal astigmatism, incision-induced posterior corneal astigmatism, and effective lens position." Springer, 2016. http://hdl.handle.net/10150/621786.
Full textWang, Kai. "Involvement of O-glcnacylation in lens development and cataract formation." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2010r/wang.pdf.
Full textAndrulaitytė, Giedrė. "Įstrižojo astigmatizmo kompiuterinis modeliavimas sferiniuose ir asferiniuose lęšiuose." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140716_105157-99873.
Full textThe bachelor’s thesis „The computer modeling of oblique astigmatism in spherical and aspherical lenses” consists of introduction, 5 chapters, conclusions and attachments. The thesis introduces 50 figures, 2 tables and refers to 16 literary sources. The volume of the work is 66 pages. The work summarizes the literature which describes the lens aberrations, its influence to quality of vision and reduction by using aspheric lenses. There is also included mathematical models of spherical and aspheric lenses, and analysis of oblique astigmatism in them. The introduction sets the aims and the goals of the study. The first chapter contains theoretic material about lens aberrations, the second – about spherical and aspheric lenses, the analysis about available surfaces of aspheric lenses and advantages of them. The third chapter contains mathematical model of light rays pathway in spherical lenses. The fourth chapter contains mathematical model of light rays pathway in aspheric lenses. The fifth chapter contains comparison of oblique astigmatism described as tangential errors in those two models.
Bassnett, S. "Ion activity and membrane function in the lens." Thesis, University of East Anglia, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377710.
Full textFerreira, Daniele Alves. "Reações biocatalíticas usando células íntegras de Lens culinaris (Lentilha)." reponame:Repositório Institucional da UFC, 2012. http://www.repositorio.ufc.br/handle/riufc/10915.
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This paper describes the use of seeds of lentil (Lens culinaris) as intact plant system in biocatalytic reactions of reduction and hydrolysis. Initially, some plant sources were evaluated for their action in the biocatalytic reduction of aromatic ketone acetophenone. The plants that showed positive results in the reduction reaction underwent determination of their protein content by the methods of Lowry and Bradford. Lens culinaris was plant species revealed that most relevant biocatalytic activity, in agreement with their high protein content (1.33 mg / mL and 1.07 mg / mL according to Bradford and Lowry methods, respectively), and thus The plant was selected for further study. Subsequently, always using the model substrate acetophenone as the reaction parameters were optimized: concentration of biocatalyst; reaction kinetics; stirring speed the reaction medium. After selecting these parameters, the bioreduction reactions were extended to other derivatives of prochiral acetophenone, which were observed with bioconversions yields and enantiomeric excess (ee) ranging from low to high percentages. Generally, were observed steric and electronic influences due to the type and relative position of the various substituents on aromatic compounds. In the case of substrates containing two different functional groups susceptible to reduction, low chemoselectivity observed. Investigated also other carbonyl compounds such as aliphatic and aromatic ketones, aromatic aldehydes and aromatic nitro compounds. In addition investigated the possibility that hydrolytic action from compounds belonging functions esters, amides and nitriles. The yields of the reactions were calculated using Gas Chromatography coupled with Mass Spectrometry (GC-MS) and Nuclear Magnetic Resonance Hydrogen (1H NMR). The enantiomeric excess (ee) were determined by High Performance Liquid Chromatography (HPLC) equipped with chiral columns.
Este trabalho relata a utilização das sementes de lentilha (Lens culinaris) como sistema íntegro de planta em reações biocatalíticas de redução e hidrólise. Inicialmente, algumas fontes vegetais foram avaliadas quanto sua ação biocatalítica na redução da cetona aromática acetofenona. Os vegetais que revelaram resultados positivos na reação de redução foram submetidos à determinação do seu teor de proteínas através dos métodos de Lowry e Bradford. Lens culinaris foi à espécie vegetal que revelou atividade biocatalítica mais relevante, em acordo com seu alto teor de proteína (1,33 mg/mL e 1,07 mg/mL, segundo os métodos de Bradford e Lowry, respectivamente), e assim, foi o vegetal selecionado para estudos mais aprofundados. Posteriormente, utilizando sempre a acetofenona como substrato modelo foram otimizados os parâmetros reacionais: concentração do biocatalisador; cinética de reação; velocidade de agitação e meio reacional. Após seleção desses parâmetros, as reações de biorredução foram estendidas a outros derivados pró-quirais da acetofenona, onde foram observadas bioconversões com rendimentos e excessos enantioméricos (ee) que variaram de baixas a elevadas porcentagens. De modo geral, foram observadas influencias eletrônica e estérica devidas ao tipo e a posição relativa dos diferentes substituintes nos compostos aromáticos. No caso de substratos contendo dois grupos funcionais diferentes suscetíveis de redução, foi observada baixa quimiosseletividade. Foram investigados também outros compostos carbonilicos, como: cetonas alifáticas e aromáticas, aldeídos aromáticos e nitrocompostos aromáticos. Em adição foi investigado a possibilidade de ação hidrolítica a partir de compostos pertencente às funções ésteres, amidas e nitrilas. Os rendimentos das reações foram calculados utilizando Cromatografia Gasosa acoplada à Espectrometria de Massas (CG-EM) e Ressonância Magnética Nuclear de Hidrogênio (RMN 1H). Os excessos enantioméricos (ee) foram determinados através de Cromatografia Líquido de Alta Eficiência (CLAE) equipada com colunas quirais.
Gilligan, Therese M. "Behind the lens : sensorimotor and cognitive after-effects of prism adaptation." Thesis, Bangor University, 2017. https://research.bangor.ac.uk/portal/en/theses/behind-the-lens(fd8b122f-8110-4aa8-ab21-105d476fe0bd).html.
Full textRogers, Adam. "Gravitational lens modeling with iterative source deconvolution and global optimization of lens density parameters." Journal of the Royal Astronomical Society of Canada, 2012. http://hdl.handle.net/1993/5283.
Full textSagawa, Atsushi. "New solution for well test analysis in reservoirs with permeability discontinuities." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/551.
Full textMital, Rashmi. "Design and demonstration of a novel optical true time delay technique using polynomial cells based on white cells." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1111161542.
Full textTitle from first page of PDF file. Document formatted into pages; contains xiii, 195 p.; also includes graphics (some col.) Includes bibliographical references (p. 190-195). Available online via OhioLINK's ETD Center
Fisher, Damien. "The influence of scleral lens parameters and fitting characteristics on corneal oedema under open and closed eye conditions." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/211357/1/Damien_Fisher_Thesis.pdf.
Full text