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Articles by Long Ji
Rapid quasi-periodic reconfiguration of the accretion column in pulsar 1A 0535+262
Abstract Accretion onto strongly magnetised neutron stars is commonly interpreted using quasi-steady models, in which the accretion-column structure adjusts smoothly to the mass inflow rate. The cyclotron line in the X-ray spectrum, whose centroid energy traces the magnetic field strength and thus the height of the line-forming region, provides a key diagnostic of this structure. Whether this simple quasi-steady description remains valid on short dynamical timescales has remained uncertain.
Depressive symptoms as a mediator in the association between regular physical activity and irritable bowel syndrome-related symptom severity: a cross-sectional study among college students
Abstract Introduction: Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder, substantially affecting quality of life among young adults. Although regular physical activity (RPA) benefits both mental and gastrointestinal health, its potential psychological mechanisms in IBS-related symptom severity remain unclear.
X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries
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Band alignment of TiO2 through controling Cl content for high-efficiency perovskite solar cells
Band alignment of TiO2 through controling Cl content for high-efficiency perovskite solar cells Titanium oxide (TiO2) layer is widely used in perovskite electron transport. Owing to its excellent electron transport capability, the solar cell devices containing TiO2 layer achieve high conversion efficiency. However, the realization of highly-efficient devices on unmodified flat TiO2 is still a tricky problem.
Simulation and Experimental Study on Jetting Projectile Charge Penetrating Multi-Layer Spaced Targets with Large Spacing
4.3. Design Optimization of Simulation Method The multiple jet segments formed after the JPC breakup in the test continuously deviate from the charge axis during flight, but this cannot be reflected in the simulation, resulting in a great difference between the measured penetration depth and the simulation result. Therefore, a new segment-based penetration simulation method is proposed in this work.
Band alignment of Pb-Sn mixed triple cation perovskites for inverted solar cells with negligible hysteresis
Band alignment of Pb-Sn mixed triple cation perovskites for inverted solar cells with negligible hysteresis Long Ji, X.Z. Zhang, Ting Zhang, Yafei Wang, Feng Wang, Zhiqin Zhong, Zhi David Chen, Zewen Xiao, Chen Li and Shibin Li Abstract Substituting the toxic lead (Pb) in Pb halide perovskites by less harmful Sn is an attractive approach towards environment-friendly perovskite solar cells.
A Diamine-Based Integrated Absorption-Mineralization Process for Carbon Capture and Sequestration: Energy Savings, Fast Kinetics, and High Stability
The high energy requirement of amine regeneration and the uncertainty of safe disposal of the captured CO remain big challenges to the large-scale implementation of amine scrubbing process for CO capture. Mineral carbonation represents a safe and permanent route to capture and store CO with net energy production but typically proceeds at a slow reaction rate.
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