Results 131 to 140 of about 78,726 (246)

Energy Cascade and Damping in Fast-mode Compressible Turbulence

open access: yesThe Astrophysical Journal Letters
Compressible turbulence governs energy transfer across scales in space and astrophysical systems. Capturing both the turbulence cascade and damping is therefore crucial for models of energy conversion, plasma heating, and particle transport in diverse ...
Chuanpeng Hou   +3 more
doaj   +1 more source

Dissipation scales in the Earth's plasma sheet estimated from Cluster measurements [PDF]

open access: yesNonlinear Processes in Geophysics, 2005
In order to estimate the dissipation time-scale in magnetic turbulence in the plasma sheet a novel method is introduced for classification of velocity dependent patterns of two-point probability density functions' shapes near their maxima.
Z. Vörös   +7 more
doaj  

Constructing Neuroinflammation‐On‐A‐Chip for Traditional Chinese Medicine Extracts Evaluation

open access: yesSmart Medicine, Volume 5, Issue 2, April 2026.
We present a biomimetic neuroinflammation‐on‐a‐chip that models inflammatory microenvironments for efficient drug evaluation. This platform allows high‐throughput, dose‐dependent screening of natural compounds, offering a reliable tool for discovering anti‐neuroinflammatory therapeutics.
Xirui Wang   +5 more
wiley   +1 more source

Turbulence in Space Plasmas [PDF]

open access: yes, 2009
Waves and Instabilities in Space Plasmas.- Solar MHD: An Introduction.- An Introduction to Fluid and MHD Turbulence for Astrophysical Flows: Theory, Observational and Numerical Data, and Modeling.- The Solar Atmosphere.- The Solar Flare: A Strongly Turbulent Particle Accelerator.- Diagnostics of the Solar Wind Plasma.- Physical Processes in the Solar ...
openaire   +1 more source

Parker Solar Probe Observations of Proton Core‐Beam Distributions in Heliospheric Current Sheet Region: Quasilinear Instability Analysis Combined With Collisional Relaxation

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Parker Solar Probe has been proven as instrumental for the observation of young solar wind. During the encounters E‐07 and E‐08, PSP recorded the core plus beaming protons crossing the heliospheric current Sheet region. When the observed PSP data is plotted in the temperature ratio versus parallel beta space, it is found that the occurrence ...
M. Rashid   +10 more
wiley   +1 more source

Magnetic geometry effects on turbulent density fluctuations in Wendelstein 7-X

open access: yesNuclear Fusion
Line-integrated density fluctuation measurements from the core of the optimised stellarator Wendelstein 7-X (W7-X) are studied in the context of magnetic field geometry changes.
J.-P. Bähner   +18 more
doaj   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both   +2 more
wiley   +1 more source

Reconstruction of Two‐Dimensional Magnetohydrodynamic and Hall Magnetohydrodynamic Equilibria in Space Using Physics‐Informed Neural Networks

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract We present a novel data analysis technique based on physics‐informed neural networks (PINNs) to reconstruct two‐dimensional (2D) magnetohydrodynamic (MHD) and Hall MHD equilibria in a space plasma from in situ spacecraft measurements. Our method incorporates the steady‐state MHD or Hall MHD equations—a set of partial differential equations ...
Hiroshi Hasegawa   +3 more
wiley   +1 more source

Plasma beta dependence of turbulent transport suggesting an advantage of weak magnetic shear from local and global gyrokinetic simulations

open access: yesNuclear Fusion
A higher plasma β is desirable for realizing high performance fusion reactor, in fact, one of the three goals of JT-60SA project is to achieve a high- β regime.
A. Ishizawa   +4 more
doaj   +1 more source

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