Results 101 to 110 of about 1,232 (254)

Hidden Activity Revealed: Photospheric Energetics and Dynamics with High-resolution Magnetographic Data

The Astrophysical Journal Letters
We revisit an existing but unexplored finding on the calculation of the baseline (i.e., potential) magnetic energy in observed solar magnetic configurations and apply it to two series of high-cadence, cospatial, and cotemporal line-of-sight photospheric ...
Manolis K. Georgoulis, Qin Li, Jeongwoo Lee, Haimin Wang, Nour E. Raouafi   +4 more
doaj   +1 more source

Kaempferol Attenuates Spaceflight‐Associated Knee Cartilage Degradation by Targeting NOX4‐Mediated Mitochondrial Dysfunction

Advanced Science, EarlyView.
We have shown that both simulated and actual spaceflight contribute to cartilage degradation in the knees of mice. Using RNA sequencing and bioenergetic profiling, we identified NADPH oxidase 4 (NOX4) as a key factor driving these changes. Additionally, we found that kaempferol, a naturally occurring flavonoid that binds directly to NOX4, reduces ...
Yuesong Yin, Ruiling Xu, Meagan J. Makarczyk, Jia‐Jun Liu, Silvia Liu, Matthew Z. Shi, Roberta Di Carlo, Michael F. Almeida, Alex Garris, Sarah Day, Rebekah Sanchez‐Hodge, Jonathan C. Schisler, Aleeza H. Zilberman, Noah G. Allen, Angela J. Kubik, Elizabeth A. Blaber, Arnold Z. Olali, Wanqing Xie, Douglas C. Wallace, Christopher E. Mason, Peter G. Alexander, Giuseppe Intini, Afshin Beheshti, Hang Lin   +23 more
wiley   +1 more source

Prediction of Intensity Variations Associated with Emerging Active Regions using Helioseismic Power Maps and Machine Learning

The Astrophysical Journal Supplement Series
We developed recurrent neural networks using the long short-term memory (LSTM) architecture to predict the decrease in continuum intensity linked to the emergence of active regions (ARs), before they become visible on the solar surface and start forming ...
Spiridon Kasapis, Irina N. Kitiashvili, Alexander G. Kosovichev, John T. Stefan   +3 more
doaj   +1 more source

Low-latitude Magnetic Flux Emergence on Rapidly Rotating Solar-type Stars

The Astrophysical Journal
Abstract Besides a dense coverage of their high latitudes by starspots, rapidly rotating cool stars also display low-latitude spots in Doppler images, although generally with lower coverage. In contrast, flux emergence models of fast-rotating stars predict strong poleward deflection of radially rising magnetic flux as the Coriolis effect
Emre Işık, Sami K. Solanki, Robert H. Cameron, Alexander I. Shapiro   +3 more
openaire   +4 more sources

Black Hole Quencher‐Enhanced Plasmonic Photothermal Conversion

Advanced Science, EarlyView.
Researchers have developed a universal method to boost plasmonic photothermal conversion by attaching black hole quencher (BHQ) molecules to matched metal nanostructures. This hybrid approach increases efficiency by roughly threefold, reaching up to 69.1% in the near‐infrared‐II window.
Ruiyuan Zhang, Xinru Chen, Lin Shen, Jin Li   +3 more
wiley   +1 more source

Two-sided Loop Solar Jet Driven by the Eruption of a Small Filament in a Big Filament Channel

The Astrophysical Journal
Similar to the cases of anemone jets, two-sided loop solar jets can also be produced by either flux emergence from the solar interior or small-scale filament eruptions.
Jiayan Yang, Hechao Chen, Junchao Hong, Bo Yang, Yi Bi   +4 more
doaj   +1 more source

A comparative study of solar flux emergence and eruptivity in simulations of horizontal versus toroidal magnetic fields

Astronomy & Astrophysics
Context. Magnetic flux emergence is a fundamental driver of eruptive activity in the solar atmosphere. While many numerical studies employed idealized horizontal flux tubes, toroidal tubes provide a more realistic geometry for finite emerging loops with ...
Karantanis V., Zhuleku J., Archontis V., Moraitis K.   +3 more
doaj   +1 more source

Transposable Element–Driven PIEZO Mutation Enhances Locust Flight in Plateau Hypoxia

Advanced Science, EarlyView.
Why transposable elements (TEs) persisted or expanded in genomes remains a mystery. Using integrated analysis of TE macro‐ and microevolution in locusts, our results showed that thousands of TE insertions promoted widespread adaptive variation. Subfamilies of candidate adaptive TEs amplified and reshaped species‐level genomic architecture.
Xuanzhao Li, Ying Liu, Longsheng Xing, Xianliang Huang, Yingming Sun, Lei Yue, Yuze Zhang, Huilong Du, Bing Chen   +8 more
wiley   +1 more source

Triggering of the 2024 August 8 X1.3 Flare by Peripheral Flux Emergence

The Astrophysical Journal
We investigate an X1.3 flare in active region 13777 on 2024 August 8, which was preceded by precursor brightening associated with small-scale magnetic flux emergence and cancellation at the periphery of the leading polarity. Multi-instrument observations
Eun-Kyung Lim, Kanya Kusano, Donguk Song, Vasyl Yurchyshyn, Satoshi Inoue, Juhyung Kang, Kyoung-Sun Lee, Hannah Kwak, Masahito Kubo, Ryohtaroh T. Ishikawa   +9 more
doaj   +1 more source

Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction

Advanced Science, EarlyView.
Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen, Bapan Biswas, Apinya Ngoipala, Julia Wiktor, Ujjwal Pal, Shalini Singh   +5 more
wiley   +1 more source