Results 61 to 70 of about 3,680 (199)

Plasmoid-Induced-Reconnection and Fractal Reconnection [PDF]

, 2000
As a key to undertanding the basic mechanism for fast reconnection in solar flares, plasmoid-induced-reconnection and fractal reconnection are proposed and examined.
A Hundhausen, A O Benz, C Z Cheng, D Biskamp, D Biskamp, E R Priest, G M Simnett, G S Choe, G S Choe, H Carmichael, H Kitabata, J Heyvaerts, J Lin, J Schumacher, K Dere, K Kusano, K Shibata, K Shibata, K Shibata, K Shibata, K Shibata, K Shibata, L C Lee, M Hoshino, M Ohyama, M Ohyama, M Ohyama, M Scholer, M Tanaka, M Ugai, M Ugai, M Ugai, M Yan, P A Sturrock, P F Chen, R A Kopp, R A Treumann, R Horiuchi, R L Moore, S Akiyama, S Ichimaru, S Masuda, S Nitta, S Tanuma, S Tanuma, S Tsuneta, S Tsuneta, S Tsuneta, S W Kahler, T G Forbes, T G Forbes, T Hirayama, T Hirayama, T Magara, T Magara, T Tajima, T Yokoyama, T Yokoyama, T Yokoyama, U Anzer, Y Hanaoka, Z Mikic   +61 more
core   +2 more sources

Left Ventricular Outflow Tract Geometry as a Predictor of Permanent Pacemaker Implantation After Transcatheter Aortic Valve Implantation Using the Evolut Series

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Predicting the need for permanent pacemaker implantation (PPM) after transcatheter aortic valve implantation (TAVI) is crucial for procedural planning and patient counseling. Aims To evaluate whether left ventricular outflow tract (LVOT) morphology, specifically a tapered configuration, predicts conduction disturbances requiring PPM
Mahmoud Abdelshafy, Angela McInerney, Ahmed Elmeanawy, Paolo Alberto Del Sole, Max Wagener, Hatem Helal, Mahmoud Abozaid, Ashraf Alamir, Tamer Fouad, Alsayed Almarghany, Briain MacNeill, Osama Soliman, Darren Mylotte, Mohammad Abdelghani   +13 more
wiley   +1 more source

An Extreme Stellar Prominence Eruption Observed by LAMOST Time-domain Spectroscopy

The Astrophysical Journal Letters
We report the detection of an extreme stellar prominence eruption on the M dwarf Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) J044431.62+235627.9, observed through time-domain H α spectroscopy with the LAMOST.
Hong-Peng Lu, Hui Tian, Li-Yun Zhang, He-Chao Chen, Ying Li, Zi-Hao Yang, Jia-Sheng Wang, Jia-Le Zhang, Zheng Sun   +8 more
doaj   +1 more source

Quantitative MRI Values for Atrial and Ventricular Parameters in Altitude‐Dwelling Youth

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background The hypoxic environment on the Qinghai Plateau significantly exacerbates myocardial remodeling, with sex/ethnicity‐specific variations in cardiac parameters among local youth. Current cardiac MRI reference values lack data from physiologically adapted populations on this plateau.
Xiumei Xiao, Hui Xu
wiley   +1 more source

A Census of Near-UV M-dwarf Flares Using Archival GALEX Data and the gPHOTON2 Pipeline

The Astrophysical Journal, 2023
M-dwarfs are common stellar hosts of habitable-zone exoplanets. Near-UV (NUV) radiation can severely impact the atmospheric and surface conditions of such planets, making the characterization of NUV flaring activity a key aspect in determining ...
Param Rekhi, Sagi Ben-Ami, Volker Perdelwitz, Yossi Shvartzvald   +3 more
doaj   +1 more source

Angular momentum evolution of young low-mass stars and brown dwarfs: observations and theory

, 2013
This chapter aims at providing the most complete review of both the emerging concepts and the latest observational results regarding the angular momentum evolution of young low-mass stars and brown dwarfs.
Bouvier, J., Matt, S. P., Mohanty, S., Scholz, A., Stassun, K. G., Zanni, C.   +5 more
core   +2 more sources

Alcohol Septal Ablation in Hypertrophic Obstructive Cardiomyopathy: Long‐Term Follow‐Up of Deformations and Hemodynamics

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background A detailed evaluation of hemodynamics, supportive morphology, and deformation may help uncover the pathophysiology of hypertrophic obstructive cardiomyopathy (HOCM) and the changes wrought by alcohol septal ablation (ASA). Purpose To investigate the global cardiac volume, myocardial deformation, and hemodynamic characteristics ...
Kenichiro Suwa, Kazuto Ohno, Terumori Satoh, Ryota Sato, Keisuke Iguchi, Yuichiro Maekawa   +5 more
wiley   +1 more source

Sun-as-a-star Analysis of the Solar Eruption Source Region Using Hα Spectroscopic Observations of CHASE

The Astrophysical Journal
Sun-as-a-star analyses serve as a bridge for comparative studies on solar and stellar activities. To investigate the typical Sun-as-a-star H α temporal spectral characteristics in solar eruption source regions, we analyzed five different types of solar ...
Xiaofeng Liu, Yijun Hou, Ying Li, Ye Qiu, Ting Li, Yingjie Cai, Shihao Rao, Junyi Zhang, Chuan Li   +8 more
doaj   +1 more source

Global Disaster Forecasting with Space Weather and Geophysical Intelligence [PDF]

Journal of Systemics, Cybernetics and Informatics, 2020
There are many opportunities to integrate Space Weather data into global weather and Natural Disaster Forecasting models. The Earth as a Stellar Transformer Hypothesis builds on the Global Electrical Circuit model.
Bruce Leybourne, David Orr
doaj  

The Contribution and FIP Bias of Three Types of Materials inside ICMEs Associated with Different Flare Intensities

The Astrophysical Journal, 2023
The relationship between coronal mass ejections (CMEs) and flares is an important issue in solar and stellar physics. The studies on the origination and generation mechanisms of interplanetary CME (ICME) materials are crucial for understanding the ...
Hui Fu, Xinzheng Shi, Zhenghua Huang, Youqian Qi, Lidong Xia   +4 more
doaj   +1 more source