Results 61 to 70 of about 775,307 (358)

Factors Affecting Posterior Capsule Opacification in the Development of Intraocular Lens Materials

Pharmaceutics, 2021
Posterior capsule opacification (PCO) is the most common complication arising from the corrective surgery used to treat cataract patients. PCO arises when lens epithelial cells (LEC) residing in the capsular bag post-surgery undergo hyper-proliferation ...
Grace Cooksley, Joseph Lacey, Marcus K. Dymond, Susan Sandeman   +3 more
doaj   +1 more source

Dr TIM: Ray-tracer TIM, with additional specialist scientific capabilities

, 2013
We describe several extensions to TIM, a raytracing program for ray-optics research. These include relativistic raytracing; simulation of the external appearance of Eaton lenses, Luneburg lenses and generalized focusing gradient-index (GGRIN) lenses ...
Courtial, Johannes, Oxburgh, Stephen, Tyc, Tomas   +2 more
core   +1 more source

Weak lensing by voids in modified lensing potentials [PDF]

Journal of Cosmology and Astroparticle Physics, 2015
19 pages, 8 figures.
Barreira A, Cautun M, Li BJ, Baugh CM, Pascoli S   +4 more
openaire   +6 more sources

An approach for coherent periodogram averaging of tilt‐series data for improved contrast transfer function estimation

FEBS Open Bio, EarlyView.
The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley   +1 more source

Integration and Application of Microlens Arrays Within Heads-Up Displays

IEEE Photonics Journal, 2018
The proposed work targets a fundamental challenge in heads-up display technology—in that such displays must bring about tight imaging with a flat form factor to support integration within eyewear. A Gabor superlens, being coupled plano-concave and
Weicheng Yan, Xian Jin, Hongbae S. Park, Ashli Le Blanc, Hamid Abdollahi, Boris Stoeber, Jonathan F. Holzman   +6 more
doaj   +1 more source

Profiling the effect of low frequency mechanical vibration on the metabolic and oxidative stress responses of A431 carcinoma

FEBS Open Bio, EarlyView.
20 Hz mechanical vibration induced A431 cancer cells' apoptosis without such effect on other healthy cell lines of L929 and C2C12. Lowered glucose consumption is observed specifically in A431. The expressions of ROS, HMGB1, and HSP1 levels initially increase and subsequently decrease in the cancer cell line, as opposed to L929 and C2C12, which ...
Wresti L. Anggayasti, Chikahiro Imashiro, Takashi Morikura, Shogo Miyata, Akira Funahashi, Kenjiro Takemura   +5 more
wiley   +1 more source

Opaque perfect lenses [PDF]

, 2006
The response of the ``perfect lens'', consisting of a slab of lossless material of thickness $d$ with $\epsilon=\mu=-1$ at one frequency $\omega_0$ is investigated.
Boardman, Chew, Cui, Cummer, Fang, Garcia, Graeme W. Milton, Grbic, Guenneau, Gómez-Santos, Korobkin, Lagarkov, Larkin, Maystre, Melville, Merlin, Milton, Milton, Nicolae-Alexandru P. Nicorovici, Nicorovici, Pendry, Podolskiy, Podolskiy, Rao, Ross C. McPhedran, Sales, Shvets, Yaghjian, Yaghjian   +28 more
core   +2 more sources

Understanding Contributors of Resilience in Youth With Childhood‐Onset Systemic Lupus Erythematosus Through a Socioecological Lens: A Mixed‐Methods Study

Arthritis Care &Research, EarlyView.
Objective This study aimed to identify themes contributing to resilience in childhood‐onset systemic lupus erythematosus (cSLE), distinguish between profiles of resilience, and examine how they relate to underlying themes and patient characteristics. Methods We conducted a mixed‐methods study of 21 patients with cSLE aged 11 to 19 years at a Canadian ...
Isabella Zaffino, Louise Boulard, Joanna Law, Asha Jeyanathan, Lawrence Ng, Sandra Williams‐Reid, Kiah Reid, Angela Cortes, Eugene Cortes, Ashley Danguecan, Deborah M. Levy, Linda T. Hiraki, Andrea M. Knight   +12 more
wiley   +1 more source

What Fraction of Gravitational Lens Galaxies Lie in Groups?

, 2000
We predict how the observed variations in galaxy populations with environment affect the number and properties of gravitational lenses in different environments. Two trends dominate: lensing strongly favors early-type galaxies, which tend to lie in dense
Ann I. Zabludoff, Browne I. W. A., Charles R. Keeton, Daniel Christlein, Fukugita M., Jaunsen A. O., Kochanek C. S., Mao S., Quast R., Rix H.-W., van Dokkum P. G., Wang Y.   +11 more
core   +1 more source

Double-impulse magnetic focusing of launched cold atoms. [PDF]

, 2005
We have theoretically investigated three-dimensional focusing of a launched cloud of cold atoms using a pair of magnetic lens pulses (the alternate-gradient method). Individual lenses focus radially and defocus axially or vice versa.
Aidan S Arnold, Arnold A S, David A Smith, Earnshaw S, Folman R, Grimm R, Hinds E A, Hughes I G, Hughes I G, Hughes I G, Ifan G Hughes, Lawson J D, Matthew J Pritchard, Meschede D, Murray D R, Pritchard M J, Salomon Ch, Sidorov A I, Smith D A Pritchard M J Arnold A S Hughes I G   +18 more
core   +2 more sources