Results 61 to 70 of about 318,136 (246)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

A Case Report of Optic Disc Pit Maculopathy in an 8-Year-Old Boy: Vitrectomy with Internal Limiting Membrane Flap in a Child

Case Reports in Ophthalmology
Introduction: Optic disc pit maculopathy is a challenging retinal disease that can significantly impact the quality of life, especially in pediatric patients.
Stergios Ntikos, Spyridon Doumazos, Aikaterini Barlampa, Eirini Okoutsidou, Niki Zampogianni, Stylianos A. Kandarakis, Panagiotis Stavrakas, Asli Perente, Doukas Dardabounis, Petros Petrou   +9 more
doaj   +1 more source

Surgery for macular holes associated with unusual concomitant pathologies

Oman Journal of Ophthalmology, 2013
Macular hole (MH) is uncommonly seen in association with retinitis pigmentosa (RP), optic disc pit or choroidal coloboma. The visual disability in eyes with RP, optic disc pit or choroidal coloboma can range from mild to severe.
Dhanashree Ratra, Vishal Raval
doaj   +1 more source

Optic Disc Pit Maculopathy after Blunt Ocular Trauma

, 2004
Purpose To present a symptomatic optic pit 3 months after a blunt ocular trauma. METHODS A 16-year-old male with unilateral decreased vision was examined with multiple cross-sectional scans using optical coherence tomography (OCT) and kinetic ultrasound ...
C.H. Meyer, E.B. Rodrigues
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Functional microperimetry and SD-OCT confirm consecutive retinal atrophy from optic nerve pit

Clinical Ophthalmology, 2009
Vikram S Brar, Ravi K Murthy, K V ChalamUniversity of Florida College of Medicine, Department of Ophthalmology, Jacksonville, FL, USAAbstract: A congenital anomaly, optic nerve pit is often associated with serous retinal detachment involving ...
Vikram S Brar, Ravi K Murthy, K V Chalam   +2 more
doaj  

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source

Refractory Central Serous Retinal Detachment in the Presence of Optic Disc Pit – Case Report

Okulistyka
Among congenital optic disc anomalies are megalopapilla, optic nerve aplasia and hypoplasia (de Morsier’s syndrome) and optic disc excavations. The latter are attributed to abnormal fetal fissure’s closure.
Radosław Kaczmarek, Dorota Kaczmarek
doaj   +1 more source

Optical coherence tomography characteristics in eyes with optic disc pit with or without maculopathy

Kerala Journal of Ophthalmology, 2018
Purpose: The purpose of this study is to study the optical coherence tomography (OCT) characteristics of optic disc pit with or without maculopathy and to validate the mechanism of fluid passage from the optic disc pit to the macula.
Dhileesh P Chandrasekharan
doaj   +1 more source