Results 231 to 240 of about 197,512 (314)

Optimising a current‐rate controlled flash sintering process for UO2 pellet fabrication

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Field assisted sintering techniques (FASTs) are currently being presented as an attractive alternative to the energy and time intensive fabrication routes employed for UO2 and MOx nuclear fuel manufacture. Current‐rate controlled flash sintering (CR‐FS) is a novel variant of typical flash sintering (FS) methods that permits heightened sample ...
Jonathan J. Morgan   +8 more
wiley   +1 more source

Testing the Weak Cosmic Censorship Conjecture via Test Particle–Induced Overcharging/Overspinning of Kerr–Newman–Modified Gravity Black Hole

open access: yesAdvances in Astronomy, Volume 2026, Issue 1, 2026.
We examine the weak cosmic censorship conjecture (WCCC) violation by throwing a charged and rotating test particle into a Kerr–Newman–modified gravity black hole (KN–MOG BH). The result depends on several factors, such as the relative sign of the particle’s charge and its direction of rotation with respect to black hole (BH).
Waqar Ahmad   +2 more
wiley   +1 more source

Stratosphere‐Troposphere Exchange of Water Vapor Based on Observations and Reanalyses

open access: yesGeophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract This study provides the first estimates of the global stratosphere‐troposphere exchange (STE) of water vapor (H2O) using the lowermost stratosphere mass budget approach. Observationally derived H2O fluxes across the isentropic surface fitted to the tropical tropopause are −1.16 ± 0.20 Pg/yr in the Northern Hemisphere extratropics, −0.94 ± 0.18 
Cong Dong, Qiang Fu
wiley   +1 more source

MOS and RREA Processes in Thunderclouds: Intensities and Spectral Shapes

open access: yesGeophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract The Relativistic Runaway Electron Avalanche (RREA) is the primary mechanism for enhancing atmospheric electron and gamma‐ray fluxes when the electric field exceeds a density‐dependent threshold. Another, non‐threshold process—Modification of the Electron Energy Spectrum (MOS)—occurs when subcritical fields energize ambient electrons, shifting ...
Ashot Chilingarian, Mary Zazyan
wiley   +1 more source

Rapid Recharge and Descent of Thundercloud Core Producing Gamma‐Ray Glow

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 24, 28 December 2025.
Abstract We report two gamma‐ray glows observed on 22 December 2023, during a winter thunderstorm in Japan, using an array of four radiation detectors. The first glow, detected by one sensor, was quenched by a lightning discharge. The second glow appeared 2–3 min later and was tracked by three other detectors.
Y. Wada   +10 more
wiley   +1 more source

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