Results 81 to 90 of about 376,107 (295)
Diffractive multifocal intraocular lens implantation in eyes with a small-diameter pupil [PDF]
Scientific Reports, 2018 AbstractPostoperative outcome of diffractive multifocal intraocular lens (MIOL) implantation in eyes with a small-diameter pupil was evaluated. This non randomized case series involved 23 eyes of 23 patients who underwent diffractive MIOL implantation and whose preoperative photopic pupil diameter was ≤3.0 mm [small-diameter pupil (SDP) group], and 79 ...
Ouchi, Masayuki, Shiba, Takuya
openaire +2 more sources
Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann +3 more
wiley +1 more source
Relationship between lens morphology and axial length in adolescents
Di-san junyi daxue xuebao, 2021 Objective To investigate the change rules of lens by analyzing the relationship between lens morphology and axial length in adolescents. Methods A total of 285 adolescents (6~18 years old, 570 eyes) who visited our ophthalmological department from May to
DAI Cheng, LIU Meng, LI Binzhong
doaj +1 more source
Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere
Advanced 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
Agreement between ANTERION and IOLMaster700 in ocular biometric measurements in a Brazilian population [PDF]
Revista Brasileira de OftalmologiaObjective: To evaluate the agreement of biometric parameters measured by the ANTERION and IOLMaster700 devices in a Brazilian population, considering statistical differences and their clinical relevance.
Luís Armando Vitorino Alves de Souza Gondim +4 more
doaj +1 more source
The role of Lambda in the cosmological lens equation [PDF]
, 2008 The cosmological constant Lambda affects cosmological gravitational lensing. Effects due to Lambda can be studied in the framework of the Schwarzschild-de Sitter spacetime.
M. Ishak +3 more
core +1 more source
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 +5 more
wiley +1 more source
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 +9 more
wiley +1 more source
Flexible Photonic Nanojet Formed by Cylindrical Graded-Index Lens
Crystals, 2019 Photonic nanojets formed in the vicinity of the cylindrical graded-index lens with different types of index grading are numerically investigated based on the finite-difference time-domain method. The cylindrical lens with 1600 nm diameter is assembled by
Cheng-Yang Liu
doaj +1 more source
Measuring angular diameter distances of strong gravitational lenses
, 2015 The distance-redshift relation plays a fundamental role in constraining cosmological models. In this paper, we show that measurements of positions and time delays of strongly lensed images of a background galaxy, as well as those of the velocity ...
Jee, Inh +2 more
core +1 more source