Results 81 to 90 of about 887,984 (236)

An observational study of changes in corneal parameters following use of soft contact lens and rigid gas permeable lens

open access: yesAsian Journal of Medical Sciences, 2017
Background: There have been significant advancements in contact lens designs and materials over the past few decades, the lenses still represent a foreign body in the ocular environment and may lead to physiological (corneal oedema or thinning) as well ...
Neha Chandrakar
doaj   +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

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Relationship between biometry, fovea, and choroidal thickness in Nigerian children with myopia

open access: yesAfrican Vision and Eye Health
Background: Understanding the relationship between biometric and structural changes in childhood myopia is necessary to effectively manage myopia progression.
Chukwuemeka Junior Obinwanne   +2 more
doaj   +1 more source

How Could Contact Lens Wearers Be at Risk of Acanthamoeba Infection? A Review

open access: yesJournal of Optometry, 2009
Contact lens wear is highly influential on the incidence of ulcerative keratitis worldwide, particularly in developed countries. The association between Acanthamoeba keratitis and contact lens wear is firmly established; it may account for up to 95% of ...
Youhanna W. Ibrahim   +2 more
doaj   +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

The antibacterial activity of contact lens solutions against microbial keratitis

open access: yesNational Journal of Physiology, Pharmacy and Pharmacology, 2017
Background: Contact lens has a growing popularity among people with vision impairment as well as for cosmetic reasons. However, its contamination can cause microbial keratitis.
Arif Budiman   +3 more
doaj   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz   +3 more
wiley   +1 more source

Development of a contact lens quality monitoring system [PDF]

open access: yes
The quality of contact lens samples depends strongly on their free volume fractions. It is expected that the free volume fraction of the test samples will also impact their attenuation coefficients for soft x rays.
Shen, Chih-Ping   +2 more
core   +1 more source

Real open books and real contact structures

open access: yes, 2015
A real 3-manifold is a smooth 3-manifold together with an orientation preserving smooth involution, called a real structure. In this article we study open book decompositions on smooth real 3-manifolds that are compatible with the real structure. We call
Ozturk, Ferit, Salepci, Nermin
core   +1 more source

Home - About - Disclaimer - Privacy