Results 101 to 110 of about 2,606 (253)

Multimode Quasiperiodic Pulsations in Extreme-ultraviolet Emissions Associated with an X-Class Solar Flare

The Astrophysical Journal
Abstract We report detection of quasi-periodic pulsations in extreme-ultraviolet (EUV) emissions during the peak phase of an X-class solar flare. Temporal variation of EUV intensity in 171 Å and 335 Å channels of SDO/AIA were analyzed using wavelet transform, Ensemble Empirical Mode Decomposition (EEMD), Hilbert–Huang spectral ...
Sachin Rajkapoor Kanaujiya, Ram Ajor Maurya, Valery M. Nakariakov   +2 more
openaire   +1 more source

Green Hydrogen for Public Transportation: Insights From an ABM and From Palma de Mallorca Case Study

Business Strategy and the Environment, EarlyView.
ABSTRACT The development of green hydrogen (GH2) value chains is crucial for decarbonizing sectors such as transport and industry. Their emergence, however, requires coordination among diverse actors, technologies, and regulations, which traditional analytical approaches struggle to capture.
Roberta De Cristofaro, Cristina Ponsiglione, Simonetta Primario   +2 more
wiley   +1 more source

Transient coronal extreme ultraviolet emission before and during the impulsive phase of a solar flare

The Astrophysical Journal, 1989
Transient coronal EUV emission, recorded in an emission line of Fe XI at 180.4 A, has been observed prior to and during the initial stages of a solar flare. This emission provides direct evidence of the interactions between the lower corona and the chromosphere during flare initiation.
openaire   +1 more source

Bismuth‐Based Semiconductors in Photocatalytic CO2 Reduction: Catalysts, Progress, and Future Perspectives

Carbon and Hydrogen, EarlyView.
This review systematically summarizes research progress on bismuth‐based semiconductor photocatalytic materials in the field of CO2 reduction. It focuses on elucidating the mechanisms by which four modification strategies—including heteroatom doping, oxygen vacancy engineering, microstructural control, and heterostructure fabrication—regulate band ...
Shuisen He, Guodong Zhang, Mengchi Guo, Song Zhong, Jie Yang, Tongrui Zhang, Xingye Zeng   +6 more
wiley   +1 more source

Solar Atmospheric Oscillations as Measured by the GOES-R Series EXIS EUVS-C Instrument

The Astrophysical Journal Letters
This Letter presents first observations of distinct solar atmospheric oscillations from signals collected by the Extreme Ultraviolet and X-ray Irradiance Sensors EUVS-C instrument, which is part of each Geostationary Observational Environmental Satellite
Thomas D. Eden Jr., Francis. G. Eparvier, Andrew R. Jones, William E. McClintock, Donald L. Woodraska, Tom Woods, Martin Snow   +6 more
doaj   +1 more source

Positional Isomer Engineering for Crystallization Kinetics Control in Wide‐Bandgap Perovskite Solar Cells

Carbon Energy, EarlyView.
Based on the ortho‐para configuration of the amino‐sulfonic acid group, 2,4‐diaminobenzenesulfonic acid (2,4‐DABSA) forms the strongest coordination with the perovskite precursor among its isomers, guiding a unique “fast nucleation followed by slow crystallization” kinetics.
Jun Chu, Chaoqi Liu, Xi Yang, Xiuhua Chen, Tao Zhu, Shaoyuan Li, Zhongqiu Tong, Huidong Ma, Jianjun Zhang, Jianghui Zheng, Wenhui Ma, Jessica Yajie Jiang   +11 more
wiley   +1 more source

A Semiempirical Estimate of Solar Extreme-ultraviolet Evolution from 10 Myr to 10 Gyr

The Astronomical Journal
The extreme-ultraviolet (EUV; 100–911 Å) spectra of F, G, K, and M stars provide diagnostics of the stellar chromosphere through the corona, with line and continuum formation temperatures spanning roughly 10 ^4 –10 ^7 K.
Kevin France, Girish Duvvuri, Cynthia S. Froning, Alexander Brown, P. Christian Schneider, J. Sebastian Pineda, David Wilson, Allison Youngblood, Vladimir S. Airapetian, Kosuke Namekata, Yuta Notsu, Tristen Sextro   +11 more
doaj   +1 more source

Perovskite Photodetectors at the Intelligence Frontier: From Tunable Materials to Adaptive Optoelectronic Systems

Carbon Energy, EarlyView.
This comprehensive review presents a progressive roadmap for perovskite vision detectors. Centered on perovskite‐based artificial perception, the graphic illustrates a systematic evolution: starting with fundamental material engineering and device architectures, advancing toward complex functional strategies such as flexible neuromorphic imaging ...
Chenglong Li, Wei Qu, Deepak Kumar, Naini Jain, Nur Wardina Syahirah binti Mohamad Fadil, Nur Najiha binti Ahmad Rasid, Emannuel Kymakis, Maria Vasilopoulou, Chunxiong Bao, Feng Gao, Peng Gao, Sanjeev Kumar Sharma, Mohammad Khaja Nazeeruddin, Abd. Rashid bin Mohd Yusoff, Haotong Wei   +14 more
wiley   +1 more source

Using the Cartwheel CME to Predict Off-limb Observations of CMEs for New and Upcoming UV and EUV Spectrometers

The Astrophysical Journal
Coronal mass ejections (CMEs) expel multithermal, magnetized plasma from the Sun, and when directed toward Earth, can cause extensive damage to space and ground-based electronics.
E. M. Wraback, E. Landi, W. B. Manchester   +2 more
doaj   +1 more source

Impact of Organo‐Functionalization on the Light‐Driven Hydrogen Evolution Reactivity of Molecular Molybdenum Sulfides

Chemistry – A European Journal, EarlyView.
Organo‐functionalized molecular molybdenum sulfides were synthesized using bidentate N‐donor ligands and investigated as light‐driven homogeneous hydrogen evolution reaction (HER) catalysts. Trends observed in the HER activity of these catalysts were elucidated by combining photophysical, electrochemical and computational studies.
Moritz Jahn, Luis Kammerer, Luca Schleicher, Amelie Meyer, Mariet Sibi Puthanagady, Alexander K. Mengele, Sven Rau, Stephan Kupfer, Benjamin Dietzek‐Ivanšić, Carsten Streb   +9 more
wiley   +1 more source