Results 61 to 70 of about 16,805 (257)

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May   +9 more
wiley   +1 more source

Increase in choroidal thickness after blue light stimulation of the blind spot in young adults

open access: yesBioelectronic Medicine
Background Blue light activates melanopsin, a photopigment that is expressed in intrinsically photosensitive retinal ganglion cells (ipRGCs). The axons of ipRGCs converge on the optic disc, which corresponds to the physiological blind spot in the visual ...
Hosein Hoseini-Yazdi   +5 more
doaj   +1 more source

Recurrence Rates of Herpes Simplex Virus Keratitis in Contact Lens and Non-Contact Lens Wearers

open access: yes, 2009
OBJECTIVE:To evaluate the recurrence rates of herpes simplex virus (HSV) keratitis in contact lens wearers compared with non-contact lens wearers. METHODS:Retrospective cohort study.
Jeng, Bennie   +4 more
core   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal   +4 more
wiley   +1 more source

The time course and nature of corneal oedema during sealed miniscleral contact lens wear

open access: yes, 2019
Purpose To examine the magnitude and time course of central epithelial, stromal and total corneal thickness changes during sealed miniscleral contact lens wear and the influence of initial central corneal clearance upon these thickness changes ...
Collins, Michael   +7 more
core   +1 more source

Clinical outcomes of a novel presbyopia-correcting soft contact lens with a small aperture

open access: yes, 2020
Purpose: To investigate the efficacy and safety of a newly developed pinhole soft contact lens (Eyelike Pinhole II; Koryo Eyetech Co. Ltd.) for presbyopia correction. Methods: This prospective clinical study enrolled 29 patients with presbyopia between
김태임   +3 more
core   +1 more source

Contact Lens in Unilateral Aphakia [PDF]

open access: yesBritish Journal of Ophthalmology, 1950
thatsuch acataract isbestleft alone, isbasedontheobservation thatthe optical correction ofunilateral aphakiaisnotsatisfactory, a-s diplopia andgeneral discomfort areexl)erienced. Furthermilore, therisks oftheactual operation andofpost-operative comlplications, thefrequent occurrence ofdivergence, andthepossible disappointment ofthepatient ...
openaire   +2 more sources

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Compatibility of phospholipid liposomal spray with silicone hydrogel contact lens wear

open access: yes, 2017
To assess the effects of two weeks of regular phospholipid liposomal spray application on lipid layer grade, tear film stability, subjective comfort, visual acuity, and lipid deposition in silicone hydrogel contact lens wearers.Thirty-one existing ...
Wang, Michael   +6 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

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