Results 11 to 20 of about 1,638,765 (242)
ON THE FORMATION OF ACTIVE REGIONS [PDF]
The Astrophysical Journal, 2012 Magneto-convection can produce an active region without an initial coherent flux tube. A simulation was performed where uniform, untwisted, horizontal magnetic field of 1 kG strenght was advected into the bottom of a computational domain 48 Mm wide by 20 Mm deep. The up and down convective motions produce a hierarchy of magnetic loops with a wide range
Stein, Robert F., Nordlund, Åke
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Green Chemical Engineering, 2023 In the chemical synthesis of L-syn-p-methylsulfoxide phenylserine ethyl ester (D-ethyl ester), l-tartaric acid or enzymatic resolution is employed to resolve the racemate, and thus obtain the target compound, and the remaining isomer can be recycled to ...
Fengfan Liu +7 more
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Molecules, 2023 The selective hydrogenation of nitroarenes to N-arylhydroxylamines is an important synthetic process in the chemical industry. It is commonly accomplished by using heterogeneous catalytic systems that contain inhibitors, such as DMSO.
Jianli Chen +7 more
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Physics, 2023 Solar cosmic rays (SCRs) are generated during the primordial energy release in solar flares. This explosive process takes place in the solar corona above the active region. It represents the fast release of the magnetic field energy of the current sheet,
Alexander Podgorny +2 more
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Evolution of coronal magnetic field parameters during X5.4 solar flare
Frontiers in Astronomy and Space Sciences, 2023 The coronal magnetic field over NOAA Active Region 11,429 during a X5.4 solar flare on 7 March 2012 is modeled using optimization based Non-Linear Force-Free Field extrapolation. Specifically, 3D magnetic fields were modeled for 11 timesteps using the 12-
Seth H. Garland +4 more
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Research for Output Performance of the 85Kr Thickness Gauge Source
Journal of Isotopes, 2021 In the ordinary way, the output performance of 85Kr radioactive source depends on activity, 85Kr radioactive sources with equal activity have similar output performance.
PENG Yigang;LIANG Binbin;WANG Zimo;BA Weiwei;LIU Chao;GAO Xiang
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Inferring depth-dependent plasma motions from surface observations using the DeepVel neural network
Journal of Space Weather and Space Climate, 2021 Coverage of plasma motions is limited to the line-of-sight component at the Sun’s surface. Multiple tracking and inversion methods were developed to infer the transverse motions from observational data.
Tremblay Benoit +4 more
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On Some Challenges for National and Global Space Weather Services
Remote Sensing, 2023 Space Weather (SW) hazards are discussed in terms of the operation of national SW services and global SW centers for the International Civil Aviation Organization (ICAO).
Maria A. Sergeeva +9 more
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Interplanetary Ion Flux Dropouts Across Multiple 3He-Rich Events
Frontiers in Astronomy and Space Sciences, 2022 Solar Orbiter, a joint ESA/NASA mission, is studying the Sun and inner heliosphere in greater detail than ever before. Launched in February 2020, Solar Orbiter has already completed its first three orbits, reaching perihelia of 0.5 au from the Sun in ...
G. C. Ho +5 more
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Leida xuebao, 2013 The active decoy jamming to SAR based on the Time-Delay Doppler-Shift (TDDS) method takes effect in certain region. Proper utilization of jamming ensuring decoy quality is based on the study of the effective region. After the mathematical analysis of the
Liu Yong-cai +3 more
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