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GENETIC ANALYSIS OF EARLY LENS DEVELOPMENT IN MOUSESONG, NI January 2007 (has links)
No description available.
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452 |
Determining the Effect of Shielding for an Eye Exposed to Secondary Particles Produced by Galactic Cosmic Rays using MCNPX ModelingDe Graaf, Brandon Michael January 2010 (has links)
No description available.
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453 |
Dnmt1 Expression is Required for Lens Epithelial Cell SurvivalHorowitz, Evan Richard Kopp 06 August 2015 (has links)
No description available.
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454 |
The Effect of Trypan Blue on Posterior Capsule Opacification in an Ex Vivo Canine ModelBrash, Breanna M. 01 September 2016 (has links)
No description available.
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455 |
Immuno-Labeling of Yes-associated Protein in the Crystalline LensGrant, Edwin Arthur 23 September 2016 (has links)
No description available.
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456 |
Refractive error shift with continuous use (Rescu) lensesMerchea, Mohinder Mohan 01 October 2003 (has links)
No description available.
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457 |
Experimental study and numerical analysis of compression molding process for manufacturing precision aspherical glass lensesJain, Anurag 07 August 2006 (has links)
No description available.
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458 |
Role of the RB-E2F pathway in embryonic development: implications for paradigms of cell cycle controlWenzel, Pamela L. 10 July 2007 (has links)
No description available.
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459 |
Validation of Optical Coherence Tomography-Based Crystalline Lens Thickness Measurements in ChildrenLehman, Bret M. 14 July 2009 (has links)
No description available.
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460 |
Designing a Hyperbolic Lens Antenna using 3D Printing TechnologyThorell, Alexander, Cederberg, Jonas January 2020 (has links)
To increase capacity, lower latency, and boostdata rates, new higher gain antennas that can transmitmillimeter-waves are needed. Dielectric lens antennas arean attractive potential solution. The J1-project investigatedthe permittivity and losses of four 3D printing filamentsin four frequency bands, to better design a hyperboliclens antenna in the Ka-band with a WR-28 StandardGain Horn Antenna acting as a feed. To measure thedielectric filaments, the TRL calibration method wasevaluated in simulation and employed in measurementstogether with the NRW method for permittivity extraction.Shortcomings of these methods near resonant frequencieswere marginally analyzed in simulation, and the results ofthe processed measured permittivities were shown to havesignificant uncertainty in the loss tangent. Nevertheless thedatasheet specified<(r) =3 was shown to have meanrelative permittivity∗r= 3.53−0.13jin the Ka-band.Using the measurement data, a hyperbolic lens antennawas designed and optimized in simulation for the centerfrequency of the Ka-band at 33.25 GHz. The simulatedresults show an aperture efficiency of 36.2% and a gainof 30.4 dBi. / För att öka kapaciteten, sänka för- dröjningen samt höja datahastigheterna så behövs högre förstärkta antenner som kan transmittera millimetervågor. Här är dielektriska linsantenner en attraktiv, potentiell lösning. J1-projektet undersökte permittiviteten och förlusterna av fyra 3D-utskriftsfilament i fyra frekvensband, för att bättre designa en hyperbolisk linsantenn i Ka- bandet för en matande WR-28 “Standard Gain Horn Antenna”. För att kunna mäta de dielektriska filamenten så var TRL-kalibreringsmetoden utvärderad i simulering och nyttjad vid mätning tillsammans med NRW-metoden för att betsämma permittiviteten. Nackdelarna bakom dessa metoder nära resonanta frekvenser var marginellt analyserade i simulering och resultaten av de behandlade, mätta permittiviteterna visade sig ha märkbara osäker- heter i deras förlusttangens. Oavsett så blev medelvärdet på det uppmätta resultatet; av det databladsspecificerade materialet R (∈r) = 3; ∈*r = 3,53 -0,13j i Ka-bandet. Med hjälp av databladsspecifikationerna, så designades samt optimiserades en hyperbolisk linsantenn i simulering för Ka-bandets mittfrekvens på 33,25 GHz. De simulerade resultaten visar på en apertureffektivitet på 36,2% och en förstärkning på 30,4 dBi. / Kandidatexjobb i elektroteknik 2020, KTH, Stockholm
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