Nighttime meridional neutral wind responses to SAPS simulated by the TIEGCM:A universal time effect

The present work uses the Thermosphere Ionosphere Electrodynamics General Circulation Model(TIEGCM),under geomagnetically disturbed conditions that are closely related to the southward interplanetary magnetic field(IMF),to investigate how the nighttime poleward wind(30°–50°magnetic latitude and 19–22 magnetic local time)responds to subauroral polarization streams(SAPS)that commence at different universal times(UTs).The SAPS effects on the poleward winds show a remarkable UT variation,with weaker magnitudes at 00 and 12 UT than at 06 and 18 UT.The strongest poleward wind emerges when SAPS commence at 06 UT,and the weakest poleward wind develops when SAPS occur at 00 UT.A diagnostic analysis of model results shows that the pressure gradient is more prominent for the developing of the poleward wind at 00 and 12 UT.Meanwhile,the effect of ion drag is important in the modulation of the poleward wind velocity at 06 and 18 UT.This is caused by the misalignment of the geomagnetic and geographic coordinate systems,resulting in a large component of ion drag in the geographically northward(southward)direction due to channel orientation of the SAPS at 06 and 18 UT(00 and 12 UT).The Coriolis force effect induced by westward winds maximizes(minimizes)when SAPS commence at 12 UT(00 UT).The centrifugal force due to the accelerated westward winds shows similar UT variations as the Coriolis force,but with an opposite effect.

Advances in research on prevention and treatment of malignant tumors by Zhuang medicine

Zhuang medicine is the wisdom of the Zhuang people's longterm struggle against disease.It forms part of the traditional medicine of the motherland.In the prevention and treatment of cancer,it has formed the idea of"harmony between man and nature","three gas","three roads"and"two roads"."For the basic theory and the pathogenesis of virtual poison,establish the system theory of"regulating Qi,detoxifying and supplementing deficiency"as the basic rule.In recent years,with the increasing incidence of malignant tumors and mortality in the world,there is a need for multi-channel treatments,and the unique advantages of Zhuang medicine with anti-tumor have been re-emphasized.This article will provide an overview of Zhuang Medical's understanding of tumors,the pathogenesis of Zhuang medicine,the rule of treatment and the clinical and basic research of Zhuang medicine in cancer prevention and treatment,and provide theoretical support for the clinical practice and experimental research of Zhuang medicine in the treatment of tumor.

Observations of the step-like accelerating processes of cold ions in the reconnection layer at the dayside magnetopause

Cold ions of plasmaspheric origin have been observed to abundantly appear in the magnetospheric side of the Earth's magnetopause. These cold ions could affect the magnetic reconnection processes at the magnetopause by changing the Alfvén velocity and the reconnection rate, while they could also be heated in the reconnection layer during the ongoing reconnections. We report in situ observations from a partially crossing of a reconnection layer near the subsolar magnetopause. During this crossing, step-like accelerating processes of the cold ions were clearly observed, suggesting that the inflow cold ions may be separately accelerated by the rotation discontinuity and slow shock inside the reconnection layer.