Results 271 to 280 of about 419,552 (318)

Reflection grating fabrication for the Rockets for Extended-source X-ray Spectroscopy. [PDF]

Exp Astron (Dordr)
Miles DM, McCurdy R, Labella M, McEntaffer RL, Grisé F, McCoy J, Tutt JH.   +6 more
europepmc   +1 more source

Experimental plasma astrophysics using a T{sup 3} (Table-top Terawatt) laser

, 1996
T. Tajima
openalex   +2 more sources

Explainable Attention‐Enhanced Approach for Multimodal Breast Cancer Diagnosis Across Diverse Imaging Modalities

International Journal of Imaging Systems and Technology, Volume 35, Issue 6, November 2025.
ABSTRACT Early and accurate detection of breast cancer is critical for improving survival rates. This study presents a robust deep learning framework that integrates convolutional and attention‐based modules to enhance feature extraction across various imaging modalities.
Uzma Nawaz, Zubair Saeed, Hafiz Muhammad UbaidUllah, Farheen Mirza, Mirza Muzzamil   +4 more
wiley   +1 more source

Low‐Dose Computed Tomography Image Denoising Vision Transformer Model Optimization Using Space State Method

International Journal of Imaging Systems and Technology, Volume 35, Issue 6, November 2025.
ABSTRACT Low‐dose computed tomography (LDCT) is widely used to promote reduction of patient radiation exposure, but the associated increase in image noise poses challenges for diagnostic accuracy. In this study, we propose a Vision Transformer (ViT)‐based denoising framework enhanced with a State Space Optimizing Block (SSOB) to improve both image ...
Luella Marcos, Paul Babyn, Javad Alirezaie   +2 more
wiley   +1 more source

Gamma-ray bursts: Challenges to relativistic astrophysics

, 1997
M. J. Rees
openalex   +2 more sources

Mapping a Carrington Storm

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract A map is presented of median 1‐min‐resolution peak geoelectric‐field strength across the United States as would be induced by magnetic storms as intense as the 2 September 1859 Carrington storm. The map is constructed from two data sets: Magnetometer time series from 22 ground‐based observatories recording 40 magnetic storms, and surface ...
Jeffrey J. Love, Greg M. Lucas, Anna Kelbert, E. Joshua Rigler, Paul A. Bedrosian, Neesha R. Schnepf   +5 more
wiley   +1 more source

Probable evidence for a transient mega-electron volt emission line in the GRB 221023A. [PDF]

Nat Commun
Jiang LY, Wang Y, Wei YJ, Wei DM, Li X, He HN, Ren J, Shen ZQ, Jin ZP.   +8 more
europepmc   +1 more source

Three‐Dimensional Anisotropy of Turbulence at Ion‐Scales in the Magnetotail's Bursty Bulk Flow

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract Using the data from Magnetospheric Multiscale mission, we statistically investigate the anisotropy of turbulence within bursty bulk flows (BBFs) in the Earth's magnetotail. By computing five‐point second‐order structure functions, we reveal the three‐dimensional anisotropy and scaling properties of turbulence at ion scales.
Y. T. Tang, S. Y. Huang, J. Zhang, Z. G. Yuan, H. H. Wu, K. Jiang, Q. Y. Xiong, H. Bai   +7 more
wiley   +1 more source

Effects of modified woods saxon potential on quantum dynamics of spin 0 scalar particle in a cosmic string spacetime. [PDF]

Sci Rep
Ahmed F, Bouzenada A.
europepmc   +1 more source

Whistler Chorus Amplification in the Magnetosphere: The Nonlinear Free‐Electron Laser Model and the Ginzburg‐Landau Equation

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We present a novel nonlinear model for whistler‐mode chorus amplification based on the free‐electron laser (FEL) mechanism. First, we derive the nonlinear collective variable equations for the whistler‐electron interaction. Consistent with in situ satellite observations, these equations predict that a small seed wave can undergo exponential ...
Brandon Bonham, Amitava Bhattacharjee
wiley   +1 more source