Results 221 to 230 of about 11,657 (299)

Application of digital image restoration in x-ray astronomy

, 1974
M. P. Ekstrom
openalex   +1 more source

Addressing Known Challenges in Solar Flare Forecasting I: Limb‐Flare Prediction With a 4π Full‐Heliosphere Framework

Space Weather, Volume 24, Issue 2, February 2026.
Abstract A demonstrated failure mode for operational solar flare forecasting is the inability to forecast flares that occur near, or just beyond, the solar limb. To address this shortcoming, we develop a “4π $4{\uppi }$” full‐heliosphere event forecasting framework and evaluate its statistical classification ability against this specific challenge.
K. D. Leka, Eric L. Wagner, Lisa Upton, Bibhuti Kumar Jha, Kiran Jain, Sara Petty   +5 more
wiley   +1 more source

Unveiling Raphael's Christ Blessing: Chemical Analysis Reveals Distinctive Underdrawing Techniques and a Rare Early Use of Egyptian Blue in Renaissance Art. [PDF]

ACS Omega
Pozzi F, Ricci C, Morlotti M, Demonte D, Castelli L, Ruberto C, Cucci C, Picollo M, Stefani L, Gargano M.   +9 more
europepmc   +1 more source

Isothermal Thermoluminescence Dating of Coral Reef Calcite: Implications for Sea‐Level Change

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Reconstructing past sea‐level changes is critical in Quaternary science. On remote oceanic reefs, aragonite‐to‐calcite alteration occurs during subaerial exposure, directly recording the timing of sea‐level fall. U–Th dating of coral calcite is challenging due to open‐system issues.
Junjie Wei, Hui Zhao, Junjie Zhang, Haiwei Zhang, Leibin Wang, Yupei Li, Dongxue Li, Shuai Zhang, Kefu Yu, Jianjun Qu   +9 more
wiley   +1 more source

Starspots as the origin of ultrafast drifting radio bursts from an active M dwarf. [PDF]

Sci Adv
Zhang J, Tian H, Bellotti S, Cang T, Callingham JR, Vedantham HK, Chen B, Yu S, Zarka P, Louis CK, Jiang P, Lu H, Gao Y, Sun J, Gan H, Li H, Sun C, Lei Z, Huang M.   +18 more
europepmc   +1 more source

Efficient Multifunctional Response and Polarization Switching in BiFeO3–PbZr0.58Ti0.42O3–MnFe2O4‐Based Triphasic Composites for Advanced Pulsating Applications

Advanced Engineering Materials, Volume 28, Issue 2, January 21, 2026.
Triphasic BiFeO3–PbZr0.58Ti0.42O3–MnFe2O4 composites exhibit enhanced ferroelectric and magnetic behavior, achieving 70.76% energy‐storage efficiency and improved polarization switching. The coupling between ferroelectric and magnetic phases enables multifunctional performance, making these composites promising candidates for next‐generation energy ...
Hassan Raza Khan, Muzzamal Hussain, Rabia Baqi, Shahid Ali, Abdulaziz Alhazaa, Muhammad Ali Shar, Ammar Tariq, Shahid Atiq   +7 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

Spectroscopic Fingerprinting of Coordination‐driven Spin States in Metal‐organic Architectures

Chemistry – A European Journal, Volume 32, Issue 3, 16 January 2026.
Coordination geometry controls spin states in Co‐TCNQ frameworks. Combined theory and XAS confirm the high‐spin Co2+ on graphene and establish a direct approach for spin‐state assignment in metal‐organic systems. ABSTRACT Determining the local geometry of metal‐organic architecture on substrates is challenging, as substrate interactions can alter the ...
Yan Yan Grisan Qiu, Silvia Carlotto, Simone Mearini, Daniel Baranowski, Iulia Cojocariu, Matteo Jugovac, Giovanni Zamborlini, Pierluigi Gargiani, Manuel Valvidares, Vitaliy Feyer, Claus Michael Schneider   +10 more
wiley   +1 more source

Analysis of polarization aberrations of the off-axis pupil freeform optical system. [PDF]

iScience
Gong C, Zhang Y, Liu W, Wang J, Fu Q, Shi H.   +5 more
europepmc   +1 more source

Substrate and standard evaluation for correlative elemental mapping of biological samples by X-ray fluorescence microscopy and laser ablation ICP-MS.

J Anal At Spectrom
Zee DZ, Ahn SH, Crawford AM, Sinha N, Jin Q, Jacobsen C, Maxey E, Lai B, MacRenaris KW, O'Halloran TV.   +9 more
europepmc   +1 more source