Results 51 to 60 of about 5,834 (247)

Cosmic radio noise absorption events associated with equatorward drifting arcs during a substorm growth phase [PDF]

Annales Geophysicae, 2004
Cosmic radio noise absorption (CNA) events associated with equatorward drifting arcs during a substorm growth phase are studied by using simultaneous optical auroral, IRIS imaging riometer and EISCAT incoherent scatter radar measurements.
J. R. T. Jussila, A. T. Aikio, S. Shalimov, S. R. Marple   +3 more
doaj   +1 more source

Mesospheric ionization during substorm growth phase

Journal of Space Weather and Space Climate, 2022
Many studies have been conducted about the impact of energetic charged particles on the atmosphere during geomagnetically active times, while quiet time effects are poorly understood. We identified two energetic electron precipitation (EEP) events during
Murase Kiyoka, Kataoka Ryuho, Nishiyama Takanori, Nishimura Koji, Hashimoto Taishi, Tanaka Yoshimasa, Kadokura Akira, Tomikawa Yoshihiro, Tsutsumi Masaki, Ogawa Yasunobu, Uchida Herbert Akihito, Sato Kaoru, Kasahara Satoshi, Mitani Takefumi, Yokota Shoichiro, Hori Tomoaki, Keika Kunihiro, Takashima Takeshi, Kasahara Yoshiya, Matsuda Shoya, Shoji Masafumi, Matsuoka Ayako, Shinohara Iku, Miyoshi Yoshizumi, Sato Tatsuhiko, Ebihara Yusuke, Tanaka Takashi   +26 more
doaj   +1 more source

Energetic Electron Precipitation Induced by Oblique Whistler Mode Chorus Emissions

Journal of Geophysical Research: Space Physics, 2021
Abstract Energetic electron acceleration and precipitation in the Earth's outer radiation belt are highly associated with wave‐particle interactions between whistler mode chorus waves and electrons. We perform test particle simulations to investigate electrons interacting with parallel and oblique chorus emissions
Yi-Kai Hsieh, Yoshiharu Omura, Yuko Kubota   +2 more
openaire   +1 more source

Super‐Refractory Status Epilepticus (SRSE) in a Patient With Compound Heterozygous OPA1 Variants: Case Report and Literature Review

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi, Lara Basovic, Christopher Michael McGraw   +2 more
wiley   +1 more source

On Energetic Electron Precipitation in Auroral Arcs

Geophysical Research Letters
Abstract A key element of magnetosphere‐ionosphere coupling is the precipitation of electrons, which transfers energy from the collisionless, rarefied magnetospheric plasma into the dense, collisional ionosphere. Two distinct types of such precipitation are: auroral electrons, which carry field‐aligned currents and are responsible for
Anton Artemyev, Yukitoshi Nishimura, Xiao‐Jia Zhang, Vassilis Angelopoulos   +3 more
openaire   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Large-scale magnetic field oscillations and their effects on modulating energetic electron precipitation

Frontiers in Astronomy and Space Sciences
In this study, we present simultaneous multi-point observations of magnetospheric oscillations on a time scale of tens of minutes (forced-breathing mode) and modulated whistler-mode chorus waves, associated with concurrent energetic electron ...
Murong Qin, Wen Li, Qianli Ma, Qianli Ma, Xiao-Chen Shen, Leslie Woodger, Robyn Millan, Vassilis Angelopoulos   +7 more
doaj   +1 more source

Energetic Electron Precipitation Associated With Pulsating Aurora Observed by VLF Radio Propagation During the Recovery Phase of a Substorm on 27 March 2017

Geophysical Research Letters, 2018
Recent studies suggest that electrons with energies up to several hundred keV precipitate into the atmosphere associated with pulsating aurora (PsA). It is debated the highest energy of precipitating electrons associated with PsA.
F. Tsuchiya, A. Hirai, T. Obara, H. Misawa, S. Kurita, Y. Miyoshi, K. Shiokawa, M. Connors, M. Ozaki, Y. Kasahara, A. Kumamoto, Y. Kasaba, A. Matsuoka, M. Shoji, I. Shinohara   +14 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Coordinated EISCAT/DMSP measurements of electron density and energetic electron precipitation [PDF]

Journal of Geophysical Research: Space Physics, 1997
A campaign was recently undertaken to obtain simultaneous radar and satellite measurements that would provide insight into the temporal and spatial morphology of the energetic particle precipitation. It included coordinated field‐aligned measurements of the altitudinal profile of the E region electron density from the European Incoherent Scatter ...
P. C. Anderson, I. W. McCrea, D. J. Strickland, J. B. Blake, M. D. Looper   +4 more
openaire   +1 more source