Results 121 to 130 of about 16,466,590 (349)
Role of kinetic Alfvén waves in the non-extensive anisotropic earth’s magnetospheric plasma
Frontiers in Astronomy and Space SciencesKinetic Alfvén waves (KAWs) contribute significantly to particle acceleration in the magnetosphere of Earth. In this paper, we discussed how the charged particles’ (electrons and ions) speeds vary with distance during the wave-particle interaction.
Imran A. Khan +4 more
doaj +1 more source
Flatband Slow Wave in Novel Air-Hole-Array Strip Waveguides
IEEE Photonics Journal, 2009 We design two novel air-hole-array strip waveguides: one with elliptic air holes and the other with sandglass-shaped ones. Simulation results prove that flatband modes with low group velocity and low dispersion can be obtained.
Lei Dai, Fanghua Wang, Chun Jiang
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.Epigenetic reprogramming in hematopoietic stem and progenitor cells (HSPCs) and downstream myeloid cells, mediated by H3.3 downregulation and endogenous retroelement (ERE) overexpression, contributes to the progression of multiple sclerosis (MS). ABSTRACT Background Skewed myelopoiesis in the bone marrow has been identified as a key driver of multiple ...
Li‐Mei Xiao +6 more
wiley +1 more source
Modulational instability of discrete solitons in coupled waveguides with group velocity dispersion [PDF]
, 2006 We study temporal modulational instability of spatial discrete solitons in waveguide arrays with group velocity dispersion (GVD). For normal GVD we report existence of the strong 'neck'-type instability specific for the discrete solitons.
Vladimirov, Andrei G. +4 more
core +1 more source
Group-velocity symmetry in photonic crystal fibre for ultra-tunable quantum frequency conversion
, 2021 Low-noise frequency conversion of single photons is a critical tool in establishing fibre-based quantum networks. We show that a single photonic crystal fibre can achieve frequency conversion by Bragg-scattering four-wave mixing of source photons from an
Thomas A. Wright (14384745) +3 more
core +1 more source
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 +8 more
wiley +1 more source
, 2023 International audienceDispersion curves of elastic waveguides exhibit points where the group velocity vanishes while the wavenumber remains finite. These are the so-called zero-group-velocity (ZGV) points.
Daniel A. Kiefer +7 more
core +1 more source
Applied Physics ExpressThe ultralow thermal conductivity (1.3 W/(m∙K)) of amorphous silicon–germanium films for alloy and disorder scattering was investigated using the 3 ω method and nanoindentation.
Daiki Tanisawa +5 more
doaj +1 more source
Extracting Group Velocity Dispersion values using quantum-mimic Optical Coherence Tomography and Machine Learning. [PDF]
Sci Rep, 2023 Maliszewski KA +4 more
europepmc +1 more source
CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao +7 more
wiley +1 more source