Results 41 to 50 of about 901,630 (347)

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Profile and Visual Outcome of Patients having Keratoconus Attending Tertiary Eye Hospital, Nepal

Journal of Nobel Medical College
Background: Keratoconus is a bilateral, asymmetric, chronic, progressive ectasia of the cornea in which patients experience distorted vision that is usually treated with rigid contact lenses when spectacles no longer provide adequate vision.
Pankaj Ray Adhikari, Nirmala Chaudhary, Rajiv Ranjan Karn   +2 more
doaj   +1 more source

Contact Lens Use Advice–Risks and Outcomes: Are Patients Drowning in Information but Starved for Knowledge?

Türk Oftalmoloji Dergisi, 2023
Objectives:Microbial keratitis can cause significant visual morbidity and is a common reason for presentation to eye casualty clinics. Contact lens wear and poor contact lens hygiene significantly increase the risk of corneal infection.
Michael Tsatsos, Ioannis Athanasiadis, Cheryl MacGregor, Suresh Kumar Sharma, David Anderson, Parwez Hossain   +5 more
doaj   +1 more source

Comparison of Ocular Microbiome in Non-contact Lens and Contact Lens Users [PDF]

Journal of Clinical and Diagnostic Research, 2020
Introduction: The resident/normal flora of conjunctiva is linked to infections of the eye in most cases in the wake of ocular surgery, trauma, implants in the eye or contact lens-related infections.
L Raksha, GB Shantala, Nagaraju Gangashettappa, Deepa Sinha   +3 more
doaj   +1 more source

Stress concentration in periodically rough hertzian contact: Hertz to soft-flat-punch transition

, 2016
We report on the elastic contact between a spherical lens and a patterned substrate, composed of an hexagonal lattice of cylindrical pillars. The stress field and the size of the contact area are obtained by means of numerical methods (discrete Green's ...
Ledesma-Alonso, Rene, Leger, Liliane, Poulard, Christophe, Raphael, Elie, Restagno, Frederic   +4 more
core   +1 more source

Wearable smart sensor systems integrated on soft contact lenses for wireless ocular diagnostics [PDF]

, 2017
Wearable contact lenses which can monitor physiological parameters have attracted substantial interests due to the capability of direct detection of biomarkers contained in body fluids. However, previously reported contact lens sensors can only monitor a
BL Due, BW An, C Lee, DC Rodger, DH Kim, DJ Lipomi, FJ Ascaso, G Yu, G Zheng, G-Z Chen, GA Salvatore, H Rmili, H Wu, H Yao, J Kim, J Liu, J Park, J Zhang, J-U Park, K Besteman, K Mansouri, K Mansouri, K Na, K Takei, KS Kim, LY Chen, M Kaltenbrunner, M Leonardi, M Zhang, M-S Lee, ME Welch, MS Mannoor, NM Farandos, NS Oliver, P Dmitry, P Lee, RF Service, RJ Chen, RR Nair, S Lee, S Wagner, SP Lacour, T Moser, W Hu, W Wu, X Li, YM Song, YS Rim   +47 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Ocular higher-order aberrations and axial eye growth in young Hong Kong children

Scientific Reports, 2018
This retrospective longitudinal analysis aimed to investigate the association between ocular higher-order aberrations (HOAs) and axial eye growth in Hong Kong children.
Jason K. Lau, Stephen J. Vincent, Michael J. Collins, Sin-Wan Cheung, Pauline Cho   +4 more
doaj   +1 more source

Differential Antimicrobial Efficacy of Preservative-Free Contact Lens Disinfection Systems against Common Ocular Pathogens

Microbiology Spectrum, 2022
Microbial keratitis is a devastating disease that can cause eye damage and blindness and can be the result of infections by several common ocular pathogens.
Rhonda Walters, Allison Campolo, Elise Miller, Cindy McAnally, Manal Gabriel, Paul Shannon, Monica Crary   +6 more
doaj   +1 more source

Fabrication of Miniaturized Variable-focus Lens Using Liquid Filling Technique [PDF]

, 2007
This paper describes a simple method for fabricating a variable-focus lens by using PDMS (polydimethylsiloxane) and filling with liquid for the variable-focus lens. The lens diameter of 2-mm was designed in this experiment and expected to reach the focal
Yang, Chung-Yao, Yang, Hsiharng, Yeh, Mau-Shiun   +2 more
core   +2 more sources