Results 81 to 90 of about 134,519 (274)

Low-loss multilayer compatible a-Si:H optical thin films for photonic applications [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
This paper reports about hydrogenated amorphous silicon which can be employed as low-loss optical material for small footprint and cost-effective photonic integrated circuits.
Lipka T., Horn O., Amthor J., Müller J.
doaj   +1 more source

Investigation of Mode Interaction in Optical Microresonators for Kerr Frequency Comb Generation

open access: yes, 2014
Mode interaction in silicon nitride micro-resonators is investigated. We provide clear experimental evidence of mode interaction between two family modes and mode interaction is demonstrated to be the cause of the comb generation in resonators with ...
Del'Haye   +15 more
core   +1 more source

Stochastic resonancevs.resonant activation [PDF]

open access: yesEurophysics Letters (EPL), 2006
The phenomenon of stochastic resonance by which it is possible to boost the transduction of information by tuning into noise is experimentally and numerically contrasted with the phenomenon of resonant activation, i.e. the occurrence of a minimal, averaged residence time at an optimal time-scale in the presence of barrier modulations.
Schmitt, C.   +3 more
openaire   +4 more sources

Network Localization of Fatigue in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Fatigue is among the most common symptoms and one of the main factors determining the quality of life in multiple sclerosis (MS). However, the neurobiological mechanisms underlying fatigue are not fully understood. Here we studied lesion locations and their connections in individuals with MS, aiming to identify brain networks ...
Olli Likitalo   +12 more
wiley   +1 more source

Resonance superfluidity: Renormalization of resonance scattering theory [PDF]

open access: yesPhysical Review A, 2002
15 pages, 10 ...
Kokkelmans S   +4 more
openaire   +2 more sources

Frailty Exacerbates Disability in Progressive Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background To evaluate frailty in severe progressive multiple sclerosis (PMS) and to investigate the underlying mechanisms. Methods This prospective, cross‐sectional, multicenter study enrolled a late severe PMS group requiring skilled nursing (n = 53) and an age, sex, and disease duration‐matched control PMS group (n = 53).
Taylor R. Wicks   +10 more
wiley   +1 more source

Under-Coupling Whispering Gallery Mode Resonator Applied to Resonant Micro-Optic Gyroscope

open access: yesSensors, 2017
As an important sensing element, the whispering gallery mode resonator (WGMR) parameters seriously affect the resonant micro-optic gyroscope (RMOG) performance.
Kun Qian   +7 more
doaj   +1 more source

A Multi-Node Magnetic Positioning System with a Distributed Data Acquisition Architecture

open access: yesSensors, 2020
We present a short-range magnetic positioning system that can track in real-time both the position and attitude (i.e., the orientation of the principal axes of an object in space) of up to six moving nodes. Moving nodes are small solenoids coupled with a
Francesco Santoni   +3 more
doaj   +1 more source

Resonances within chaos [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2012
A chaotic system under periodic forcing can develop a periodically visited strange attractor. We discuss simple models in which the phenomenon, quite easy to see in numerical simulations, can be completely studied analytically.
G. Gallavotti, G. Gentile, A. Giuliani
openaire   +5 more sources

Fibrinogen Changes Before and After Intravenous Thrombolysis as Predictors of Cerebral Injury and Clinical Outcomes in Acute Ischemic Stroke: A Multicenter Prospective Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma fibrinogen is essential in thrombosis and fibrinolysis, yet its dynamic changes pre‐ and post‐intravenous thrombolysis (IVT) for predicting brain injury severity and prognosis in acute ischemic stroke (AIS) patients remain unclear.
Wenhai Zhai   +28 more
wiley   +1 more source

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