Results 21 to 30 of about 105,569 (298)

Laue gamma-ray lenses for space astrophysics:status and prospects [PDF]

open access: yes, 2010
We review feasibility studies, technological developments and astrophysical prospects for Laue lenses devoted to hard X-/gamma-ray astronomy observations.Comment: 26 pages, 24 figures. Published in a special issue (Volume 2010 (2010), Article ID 215375,
Frontera, Filippo, Von Ballmoos, Peter
core   +2 more sources

Subtle changes of the crystalline lens after cycloplegia: a retrospective study

open access: yesBMC Ophthalmology, 2021
Background The purpose of this study was to evaluate the shape of the crystalline lens in terms of biometry and diopters before and after cycloplegia using the CASIA2 swept-source (SS) optical coherence tomography (OCT) system on the anterior segment ...
Cheng Dai   +3 more
doaj   +1 more source

A Low Temperature Nonlinear Optical Rotational Anisotropy Spectrometer for the Determination of Crystallographic and Electronic Symmetries [PDF]

open access: yes, 2014
Nonlinear optical generation from a crystalline material can reveal the symmetries of both its lattice structure and underlying ordered electronic phases and can therefore be exploited as a complementary technique to diffraction based scattering probes ...
Birss R. R.   +10 more
core   +3 more sources

Human Lens β-Crystallin Solubility [PDF]

open access: yesJournal of Biological Chemistry, 2000
The human lens is composed primarily of water and proteins called crystallins. Insolubility of these crystallins is correlated with aging and cataractogenesis. The alpha-crystallins have chaperone-like activity in maintaining the solubility of denatured beta- and gamma-crystallins. One established test of this chaperone activity is the ability of alpha-
J, Feng, D L, Smith, J B, Smith
openaire   +2 more sources

Intracapsular Lens Extraction for the Treatment of Pupillary Block Glaucoma Associated with Anterior Subluxation of the Crystalline Lens

open access: yesCase Reports in Ophthalmology, 2013
Purpose: To report a case of pupillary block glaucoma associated with spontaneous crystalline lens subluxation into the anterior chamber in a 34-year-old man.
Yong Joon Kim, Seung Joo Ha
doaj   +1 more source

Research progress of lens zonules

open access: yesAdvances in Ophthalmology Practice and Research, 2023
Background: The lens zonule, a circumferential system of fibres connecting the ciliary body to the lens, is responsible for centration of the lens.
Yingying Pan, Zhaoqiang Liu, Han Zhang
doaj   +1 more source

Finite element study of the accommodation behaviour of the crystalline lens after fs-laser treatment [PDF]

open access: yes, 2013
With aging the ability of the crystalline lens to adapt to different viewing distances decreases. Until now there is no satisfying treatment available.
Besdo, S.   +6 more
core   +2 more sources

A rare case of traumatic subretinal migration of crystalline lens, corroborated histologically

open access: yesIndian Journal of Ophthalmology, 2017
Blunt trauma is the most common cause of posterior dislocation of the crystalline lens. We describe a rare case of subretinal migration of crystalline lens through the giant retinal tear following blunt ocular trauma.
Pritam Bawankar   +8 more
doaj   +1 more source

Second-order Nonlinear Optical Microscopy of Spider Silk [PDF]

open access: yes, 2017
Asymmetric $\rm \beta$-sheet protein structures in spider silk should induce nonlinear optical interaction such as second harmonic generation (SHG) which is experimentally observed for a radial line and dragline spider silk by using an imaging ...
Hien, Khuat Thi Thu   +3 more
core   +2 more sources

Crystalline Lens Subluxation Following Blunt Head Trauma

open access: yesActa Médica Portuguesa, 2020
N/a.
Lucas Koenig Olm   +2 more
doaj   +1 more source

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