Results 61 to 70 of about 136,205 (300)

Microwave Photonic Fiber Ring Resonator

Sensors, 2022
In this article, a new concept of microwave photonic (MWP) fiber ring resonator is introduced. In particular, the complex transmission spectra of the resonator in the microwave domain, including magnitude and phase spectra, are measured and characterized.
Chen Zhu, Yiyang Zhuang
doaj   +1 more source

Prediction of Myasthenia Gravis Worsening: A Machine Learning Algorithm Using Wearables and Patient‐Reported Measures

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare disorder characterized by fluctuating muscle weakness with potential life‐threatening crises. Timely interventions may be delayed by limited access to care and fragmented documentation. Our objective was to develop predictive algorithms for MG deterioration using multimodal telemedicine data ...
Maike Stein, Haoqi Sun, Sophie Lehnerer, Lea Gerischer, Maximilian Mönch, Christian Meisel, Andreas Meisel, Pushpa Narayanaswami   +7 more
wiley   +1 more source

Brillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation

Photonic Sensors, 2018
Auto-regressive (AR) spectral estimation technology is proposed to analyze the Brillouin scattering spectrum in Brillouin optical time-domain refelectometry.
Mengyun Huang, Wei Li, Zhangyun Liu, Linghao Cheng, Bai-Ou Guan   +4 more
doaj   +1 more source

Ultrasound pulse generation through continuous-wave laser excited thermo-cavitation for all-optical ultrasound imaging

APL Photonics, 2023
The optical generation of pulsed ultrasound is attractive to nondestructive testing and biological imaging, especially for those involving narrow operation space or strong electro-magnetic interference.
Haojie Liu, Yuhan Wu, Chengtian Hou, Zitao Chen, Bingyan Shen, Zhiwei Luo, Hao Liang, Jun Ma, Bai-Ou Guan   +8 more
doaj   +1 more source

Shape sensing of miniature snake-like robots using optical fibers [PDF]

, 2017
Snake like continuum robots are increasingly used for minimally invasive surgery. Most robotic devices of this sort that have been reported to date are controlled in an open loop manner. Using shape sensing to provide closed loop feedback would allow for
Berthet-Rayne, P, Schmitz, A, Seneci, CA, Thompson, AJ, Wisanuvej, P, Yang, GZ   +5 more
core   +1 more source

Evaluation of the Efficacy and Safety of Satralizumab in a Pregnant NMOSD Patient With AQP4/MOG‐IgG Dual Seropositive: A Case Report

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Neuromyelitis Optica Spectrum Disorder (NMOSD) is a chronic autoimmune neuroinflammatory disease, typically characterized by antibodies against aquaporin 4 (AQP4‐IgG) or myelin oligodendrocyte glycoprotein (MOG‐IgG). Simultaneous seropositivity for both antibodies in a single patient is exceedingly rare.
Yeting Luo, Shuhua Xie, Xianghong Liu
wiley   +1 more source

Kovacs-like memory effect mediated fiber Bragg grating: resembling a silica quipu

Nature Communications
In antiquity, civilizations employed stone carvings and knotted quipu cords for information preservation. Modern telecommunications rely on optical fibers - silica glass strands engineered for light transmission - yet their capacity as archival media ...
Qiaochu Yang, Zhiyuan Xu, Xu Yue, Junqiu Long, Haopeng Wang, Yihan Zha, Furong Feng, Yang Ran, Bai-Ou Guan   +8 more
doaj   +1 more source

An Out‐of‐Place Etiology: Recognizing FMR1 Premutation in the Memory Clinic

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The FMR1 gene premutation (55–200 CGG repeats) is usually associated with a wide range of symptoms and phenotypes within the Fragile X‐tremor/ataxia syndrome (FXTAS), but may also manifest as predominant or isolated cognitive decline. We describe three male patients referred for progressive cognitive impairment and behavioral changes. Standard
Guido Greco, Caterina Motta, Enrica Marchionni, Maria Rosaria D'Apice, Carlangelo Carrese, Giuseppe Novelli, Alessandro Martorana, Chiara Giuseppina Bonomi   +7 more
wiley   +1 more source

An integrated Bragg grating oxygen sensor using a hydrophobic sol-gel layer doped with an organic dye

, 2011
Oxygen sensing is required for the understanding of many chemical processes across a diverse set of fields including medicine, environmental science and chemical synthesis. Oxygen sensing can be achieved through the use of electronic sensors.
Gates, J.C., Grossel, M.C., Parker, R.M., Smith, P.G.R., Wales, D.J.   +4 more
core   +1 more source

Interferometric vibration sensing in optical fibers

23rd Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
This paper describes a portable, experimental all-fiber interferometer designed for acoustic vibration sensing using telecommunication optical fibers. The optical and electronic components of the setup are detailed. The interferometer operates on the principle of heterodyne beatnote detection, with electronic processing to produce a quadrature ...
Čížek, M. (Martin), Pravdová, L. (Lenka), Hrabina, J. (Jan), Číp, O. (Ondřej)   +3 more
openaire   +2 more sources