Results 121 to 130 of about 833,654 (360)

Rose K Lenses for Keratoconus

open access: yes, 2012
Pur po se: To report our results with Rose K contact lenses in patients with keratoconus. Ma te ri al and Met hod: Thirty one eyes of 17 patients with keratoconus were fitted with Rose K contact lens (CL) in the Cornea Department at the Ümraniye ...
Alime Güneş   +2 more
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland   +5 more
wiley   +1 more source

Contact Lenses

open access: yesOphthalmology, 1987
Ophthalmology 94 (1987) 1355-1359.
Department of Ophthalmology, J. Hillis Miller Health Center, University of Florida, GainesvilleDepartment of OphthalmologyJ. Hillis Miller Health CenterUniversity of FloridaGainesville ( host institution )   +1 more
openaire   +3 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Integrated lenses for microfluidic systems

open access: yes, 2009
Greater integration of optical devices is required in microfluidic systems for on-chip functionality, with lenses being key components. In this paper several candidate lens types are compared and simulations are presented which show that the paraxial ...
Wilkinson, James S., Hunt, Hamish C.
core  

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu   +8 more
wiley   +1 more source

A concentrator system for BI-CPVT with static linear Fresnel lenses

open access: yes, 2011
A greenhouse with Fresnel lenses in the south facing roof and a receiver for concentrated Photovoltaic with water cooling (CPVT system) will result in electrical and thermal energy output from the solar energy excess entering a greenhouse.
Swinkels, G.L.A.M.   +4 more
core  

Design of aspheric intraocular lenses

open access: yes, 1991
The value of aspherizing intraocular lens surfaces for the purpose of improving retinal image quality of pseudophakic eyes was investigated. Surfaces were made as conicoids.
Atchison, David A.
core   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

open access: yesAdvanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang   +3 more
wiley   +1 more source

A comparison of posterior capsular opacification after implantation of three different hydrophobic square edge intraocular lenses

open access: yesIndian Journal of Ophthalmology, 2019
Purpose: To compare the posterior capsular opacification (PCO) after implantation of three types of hydrophobic square edge intraocular lenses (IOLs). Methods: A single-center, hospital-based, cross-sectional, observational study was conducted wherein ...
H Vijaya Pai   +2 more
doaj   +1 more source

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