Results 91 to 100 of about 3,196,627 (365)

W‐Based Thin Film Metallic Glasses Doped with Ni, Zr, and B for Industrial Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This work is the first to deal with a comprehensive comparison of two metallic glass systems, W–Zr–B and W–Ni–B, in terms of their suitability for specific industrial applications. Their mechanical and tribological properties are compared and discussed in combination with structural homogeneity on different types of technically relevant substrates and ...
Zbynek Studeny   +5 more
wiley   +1 more source

Ocular Biometric and Optical Coherence Tomography Parameters in Former Preterm Children: A Cohort Study

open access: yesJournal of Ophthalmology
Purpose. To compare biometric and optical coherence tomography parameters as well as refractive status in preterm children aged 4–8 years with or without retinopathy of prematurity (ROP), and evaluate their correlations with age and gender-matched full ...
Marzieh Najjaran   +8 more
doaj   +1 more source

Frequency of asthenopia and its association with refractive errors

open access: yes, 2015
Background: Asthenopia is a common complaint amongst patients who attend eye care settings. Owing to associated discomfort or distress, asthenopia affects efficient reading and performance of near tasks. Purpose: To study the prevalence of asthenopia and
S. O. Wajuihian
semanticscholar   +1 more source

Toughness of Confined Auxetic Foams

open access: yesAdvanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis   +3 more
wiley   +1 more source

Refractive Error Development in Children with Intermittent Exotropia [PDF]

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul
Background and Objective: Intermittent exotropia is the most common type of outward deviation of the eye in childhood. The association between myopia refractive error and intermittent exotropia has been shown in very few studies. This study was conducted
F Senobari   +4 more
doaj  

A plasmonic accuracy biosensor using a single laser diode [PDF]

open access: yes, 2016
A theoretical model was implemented to obtain the total specular reflection of a variable external multicavity for out of normal incidence and different polarisations.
Bañares Palacios, Paula
core   +1 more source

Diffractive and refractive timescales at 4.8 GHz in PSR B0329+54

open access: yes, 2011
We present the results of flux density monitoring of PSR B0329+54 at the frequency of 4.8 GHz using the 32-meter TCfA radiotelescope. The observations were conducted between 2002 and 2005.
Bhat   +27 more
core   +1 more source

Reliable Tissue Grasping in Robotic Minimally Invasive Surgery Enabled by Optical‐Based Slip Sensing

open access: yesAdvanced Engineering Materials, EarlyView.
An optical‐based slip sensing method using a complementary metal–oxide–semiconductor image sensor with a built‐in infrared light emitting diode enables real‐time detection of tissue slippage—including displacement, direction, and speed—in robotic minimally invasive surgery.
Minjae Lee, Amy Kyungwon Han
wiley   +1 more source

From unseen to seen: tackling the global burden of uncorrected refractive errors.

open access: yesAnnual Review of Biomedical Engineering, 2014
Worldwide, more than one billion people suffer from poor vision because they do not have the eyeglasses they need. Their uncorrected refractive errors are a major cause of global disability and drastically reduce productivity, educational opportunities ...
N. Durr   +5 more
semanticscholar   +1 more source

Electronic Control System for Optimized Resonance Operation of Dielectric Elastomer Pumps through Self‐Sensing

open access: yesAdvanced Engineering Materials, EarlyView.
A powerful electronic control system enables a dielectric elastomer pump to operate at resonance, matching conventional pump performance. Using self‐sensing to reconstruct load pressure dynamically, the adaptive control adjusts resonance frequency accordingly.
Matthias Baltes   +3 more
wiley   +1 more source

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