Results 51 to 60 of about 198,602 (291)

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Hybrid refractive holographic single vision spectacle lenses

Journal of the European Optical Society-Rapid Publications, 2019
In this contribution, we investigate hybrid single vision spectacle lenses (SVSLs) consisting of holographic optical elements (HOEs) embedded into a refractive lens.
Jannik M. Trapp, Toufic G. Jabbour, Gerhard Kelch, Thomas Pertsch, Manuel Decker   +4 more
doaj   +1 more source

Development and Validation of a Screening Tool for The Identification of Refractive Errors Among School Going Children In Tamil Nadu, India

National Journal of Community Medicine, 2023
Background: The inability to focus light onto the retina, known as refractive error, is a significant cause of correctable visual impairment. Unfortunately, students' ocular complaints often go unnoticed due to a lack of awareness. To address this issue,
Sudharsan V, Prateeksha Dawn Davidson, Lakshmi Kandhan V, Amudha VP, Rita Hepsi Rani M   +4 more
doaj   +1 more source

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

The uncorrected refractive error challenge

Community Eye Health Journal, 2016
Refractive error affects people of all ages, socio-economic status and ethnic groups. The most recent statistics estimate that, worldwide, 32.4 million people are blind and 191 million people have vision impairment.
Kovin Naidoo, Pirindha Govender , Brien Holden   +2 more
doaj  

Prevalence of refractive errors in children in India: a systematic review [PDF]

, 2018
Uncorrected refractive error is an avoidable cause of visual impairment which affects children in India. The objective of this review is to estimate the prevalence of refractive errors in children ≤ 15 years of age.
Aditi Modi, Ahmed, Ajith, Ambika, Baltussen, Bandrakalli, Barendregt, Basu, Bharani Seelam, Dandona, Dandona, Dandona, Ganekal, Ghosh, Gupta, Gupta, Higgins, Higgins, Jose, Kalikivayi, Leat, Limburg, Limburg, Lisa Keay, Manny, Munn, Murthy, Murthy, Mutti, Negrel, Nirmalan, Packwood, Padhye, Phanindra B Nukella, Pratt, Priya, Rahul Ali, Ramamurthy, Rewri, Rose, Rustagi, Saxena, Saxena, Seema, Sethu Sheeladevi, Singh, Uzma, Williams, Wu   +48 more
core   +1 more source

Deterministic Detection of Single Ion Implantation

Advanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead, Lok Kan Wan, Maddison Coke, Janet Jacobs, Nicholas F. L. Collins, Mark C. Rosamond, Richard J. Curry   +6 more
wiley   +1 more source

Five-Year Progression of Refractive Errors and Incidence of Myopia in School-Aged Children in Western China

Journal of Epidemiology, 2016
Background: To determine the change in refractive error and the incidence of myopia among school-aged children in the Yongchuan District of Chongqing City, Western China.
Wen-Jun Zhou
doaj   +1 more source

The prevalence of myopic refractive error and its associated risk factors among primary school students in a community in Shanghai

Shanghai yufang yixue, 2022
ObjectiveTo analyze the prevalence of myopic refractive error and its associated risk factors among primary school students in Shanghai Minhang Distict.MethodsA total of 11 356 primary school students who participated in the children's refraction ...
ZHANG Yaping, WANG Lijuan, ZHANG Qing, LIU Pu   +3 more
doaj   +1 more source