Results 51 to 60 of about 50,246 (312)

Light intensity optimization of optical fiber stress sensor based on SSA-LSTM model

Frontiers in Energy Research, 2022
In order to further improve the measurement range and accuracy of optical fiber stress sensor based on the interference between rising vortex beam and plane wave beam, a new stress demodulation model is designed.
Dakuan Yu, Xueguang Qiao, Xiangyu Wang
doaj   +1 more source

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source

A Fiber Optical Sensor For Non-Contact Vibration Measurements [PDF]

, 2009
This paper describes an intensity based optical sensor for the evaluation of accelerations from non-contact displacement measurements. Plastic optical fibers are used to collect the reflected light from several points on the vibrating surface, allowing ...
Perrone, Guido, Casalicchio, Maria Luisa, Vallan, Alberto   +2 more
core  

Efficient fiber Bragg grating and fiber Fabry-Pe'rot sensor multiplexing scheme using a broadband pulsed mode-locked laser

, 2005
A pulsed broadband mode-locked laser (MLL) combined with interferometric interrogation is shown to yield an efficient means of multiplexing a large number of fiber Bragg grating (FBG) or fiber Fabry-Perot (FFP) strain sensors with high performance ...
Flockhart, G M H, Cranch, G A, Kirkendall, C K   +2 more
core   +1 more source

Design of Environmental Biosensor Based on Photonic Crystal Fiber with Bends Using Finite Element Method [PDF]

, 2015
In this paper, a biosensor based on photonic crystal fiber (PCF) is proposed and designed using Full-Vectorial Finite Element Method (FVFEM). The proposed PCF sensor consists of three concentric circles surrounding the core.
Akowuah, Emmanuel Kofi, Dayoub, Iyad, Teyeb, A, Malek, FA, Malek, Fathi Abdel, Haxha, Shyqyri, Haxha, S, Teyeb, Ahmed, Akowuah, EK, Dayoub, I   +9 more
core   +1 more source

Fiber Optic Sensor Configurations

Proceedings of the 3rd International Conference on Photonics, Optics and Laser Technology, 2015
The main goal of this work is to provide a brief overview of the fiber optic sensor multiplexing configurations and techniques as well as some recent advances and trends of the most important fiber optic sensor configurations. Distributed and point sensors are explained and a number of high performance networks are shown. Finally, the concept of robust
Rosa A. Perez-Herrera, Manuel López-Amo
openaire   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang, Huiying Wang, Zhizheng Zhuo, Ai Guo, Ke Lv, Decai Tian, Chao Chai, Yunyun Duan, Shuang Xia   +8 more
wiley   +1 more source

Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]

, 2006
Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Flockhart, G M H, Cranch, G A, Kirkendall, C K   +2 more
core   +1 more source

Flexible Sensor Foil Based on Polymer Optical Waveguide for Haptic Assessment

Sensors
Minimally Invasive Surgery is often limited by the lack of tactile feedback. Indeed, surgeons have traditionally relied heavily on tactile feedback to estimate tissue stiffness - a critical factor in both diagnostics and treatment.
Zhenyu Zhang, Abu Bakar Dawood, Georgios Violakis, Ahmad Abdalwareth, Günter Flachenecker, Panagiotis Polygerinos, Kaspar Althoefer, Martin Angelmahr, Wolfgang Schade   +8 more
doaj   +1 more source

Effectiveness of rTMS on Working Memory and Inhibitory Impairments in Patients With Post‐Stroke Executive Deficits

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao, Rongwei Du, Zhujun Wang, Yang Gao, Meiling Cheng, Xianglong Wang, Wen Wu   +6 more
wiley   +1 more source