Results 51 to 60 of about 16,805 (257)

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

Advanced 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, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Clinical Performance and Patient Satisfaction of Hybrid Contact Lenses in Patients with Keratoconus

Türk Oftalmoloji Dergisi, 2023
Objectives:The aim of the study was to evaluate the fitting process, clinical performance, and patient satisfaction of hybrid contact lenses (HCL) in patients with keratoconus (KC).Materials and Methods:Sixty-eight KC patients (35 female, 33 male) who ...
Aydogdy Serdarov, Banu Bozkurt, Yalçın Karaküçük, Süleyman Okudan   +3 more
doaj   +1 more source

Corneal erosions in contact lens wear

, 2012
Contact lens wear continues to be the highest single risk factor for microbial keratitis, particularly when worn in the extended wear modality. For microbial keratitis to occur, the presence of at least a bacterial load as well as a break in the corneal ...
Eric Papas, Brien Holden, Papas, E, Maria Markoulli, Markoulli, M, Cole, N, Holden, B, Nerida Cole   +7 more
core   +1 more source

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

Advanced 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, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Self-Assembly of Zinc Oxide Photonic Crystals in Viscous Liquids: Synthesis, Characterization, and Application to Colored Contact Lenses

Photonics
Structural color is a kind of natural color that widely exists in nature. The ordered microstructure of nano materials can absorb or reflect light of specific wavelength, thus showing colorful colors. Structural color is an ideal choice for color contact
Shuwen Hou, Zichen Pan, Lin Zhao, Xue-Lian Han, Quan-Xi Zhang, Shou-Nian Ding   +5 more
doaj   +1 more source

Use of the Visante™ OCT to measure the sagittal depth and scleral shape of keratoconus compared to normal corneae: Pilot study

Journal of Optometry, 2013
Purpose: The purpose of this study is to demonstrate and compare the use of optical coherence tomography (OCT) in measuring sagittal depth (SD) and in describing the corneo–scleral junctions with the use of scleral angles, in a population of keratoconics
Luigina Sorbara, Jyotsna Maram, Katrin Mueller   +2 more
doaj   +1 more source

Relationship of Peripapillary Retinal Perfusion with Peripapillary Retinal Nerve Fiber Layer Thickness in Diabetes Mellitus Patients without Diabetic Retinopathy

IJRETINA (International Journal of Retina), 2021
Introduction: Impaired blood flow is an early sign of retinal dysfunction in diabetes. Impaired blood flow of the radial peripapillary capillaries can affect the Retinal Nerve Fiber Layer (RNFL) or ganglion cell function.
Sindi Dwijayanti, Irawati Irfani, Susanti Natalya Sirait, Elsa Gustianty, Erwin Iskandar, R. Angga Kartiwa   +5 more
doaj   +1 more source

Effect of the Rigid Gas-Permeable Contact Lens Use on the Endothelial Cells in Patients With Keratoconus

, 2021
Objectives: To compare the changes in the corneal endothelial cells of both the patients with keratoconus who use rigid gas-permeable (RGP) contact lens and who do not use any contact lens with healthy ...
Dogan, Cezmi, Mergen, Burak, Hagverdiyeva, Samira, Iskeleli, Guzin   +3 more
core   +1 more source

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

Advanced 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, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

The effect of surface treatment of silicone hydrogel contact lenses on the attachment of Acanthamoeba castellanii trophozoites

, 2009
Aims to determine if plasma surface treatment of Focus Night & Day silicone hydrogel contact lenses affects the attachment of Acanthamoeba. Unworn lotrafilcon A contact lenses with (Focus Night & Day) and with out surface treatment and Acuvue ...
Tomlinson, Alan, Beattie, Tara K.
core   +1 more source