Results 31 to 40 of about 129,670 (294)

Does Long-Term Night Shift Work Cause Dry Eye in Hospital Nurses?

Journal of Ophthalmic & Vision Research, 2023
Purpose: To determine the long-term effects of night shift work on dry eye in hospital nurses. Methods: Each participant was evaluated four times, including at the beginning of the day shift (8 am), at the end of the day shift (2 pm), at the beginning of
Aria Bouyeh, Hassan Hashemi, Yousef Alizadeh, Ebrahim Jafarzadehpur, Ali Mirzajani, Hadi Ostadimoghaddam, Abbasali Yekta, Abolfazl Jafarzadehpour, Arghavan Zarei, Mehdi Khabazkhoob   +9 more
doaj   +1 more source

Refractive errors among commercial drivers

Indian Journal of Ophthalmology, 2022
Purpose: To determine the pattern of refractive error among commercial drivers in north India. Methods: Descriptive study with convenient sampling conducted among commercial drivers of north India. Results: A total of 213 (75.8%) heavy-vehicle and 68 (24.
Mukesh Kumar, Aarti Mahaseth, Shafia Parveen, Uzma Rafeeq, Lokesh Chauhan   +4 more
doaj   +1 more source

Repeatability and Agreement of Anterion with Pentacam HR and Orbscan II in Corneal Parameters after Photorefractive Keratectomy

Dubai Medical Journal
Introduction: This study aimed to evaluate the repeatability and agreement of Anterion with Pentacam HR and Orbscan II in corneal parameters after photorefractive keratectomy (PRK).
Hadi Ostadi-Moghaddam, Javad Heravian Shandiz, Mohammad Hosein Validad, Monireh Mahjoob, Abbas Ali Yekta, Sadegh Basharaf, Tahereh Rakhshandadi   +6 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

A simple opto-fluidic switch detecting liquid filling in polymer-based microfluidic systems [PDF]

, 2007
A novel detection scheme for detection of liquid levels and bubbles in microfluidic systems, using the principle of total internal reflection (TIR) is presented. A laser beam impinges on the side walls of a channel which are inclined at 45deg.
Bundgaard, F., Ducrée, Jens, Geschke, O., Zengerle, Roland   +3 more
core   +2 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Eye problems in children with hearing impairment

Journal of Current Ophthalmology, 2015
Purpose: To compare the prevalence of refractive errors, amblyopia, and strabismus between hearing-impaired and normal children (7–22 years old) in Mashhad.
Hadi Ostadimoghaddam, Hanieh Mirhajian, AbbasAli Yekta, Davood Sobhani Rad, Javad Heravian, Azam Malekifar, Mehdi Khabazkhoob   +6 more
doaj   +1 more source

Evaluation of refractive errors in retinopathy of prematurity screening [PDF]

Medicinski Glasnik, 2019
Aim To evaluate the frequency of refractive errors in premature children in retinopathy of prematurity (ROP) screening to find mutual connection of the prematurity level, disease activity and refractive errors.
Aida Pidro, Jasmina Alajbegović-Halimić, Nina Jovanović, Ajla Pidro   +3 more
doaj   +1 more source

Spectacle wearing in children randomised to ready-made or custom spectacles, and potential cost savings to programmes: study protocol for a randomised controlled trial. [PDF]

, 2016
BACKGROUND: Uncorrected refractive errors are the commonest cause of visual impairment in children, with myopia being the most frequent type. Myopia usually starts around 9 years of age and progresses throughout adolescence.
Evans, Jennifer, Gilbert, Clare, Morjaria, Priya, Murali, Kaushik   +3 more
core   +2 more sources

Numerical Model and Experimental Validation of Composite Metal Foam in Protecting Carbon Steel Against Puncture

Advanced Engineering Materials, EarlyView.
The puncture prevention and energy absorption performance of composite metal foam (CMF) are studied experimentally and numerically for hazardous materials transportation protection. The numerical model implementing air within the CMF (nonhomogeneous model using fluid cavity technique) predicts puncture more accurately compared to the homogeneous CMF ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source