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BackgroundAcademic pressure, uncertainty in career planning, and interpersonal relationships can all lead to increased psychological stress among college students, leading to depression. As the core curriculum of universities, physical education provides students with opportunities to relax and relieve stress psychologically. And recreational exercise therapy helps students release stress in relaxed and fun ways. Combining ideological and political education with recreational exercise therapy in physical education courses may provide a new and practical approach to treating depression symptoms in college students.Subjects and MethodsThe study divided 76 students with depression into an experimental group and a control group. The control group received routine treatment; based on the control group, the experimental group conducted intervention on the ideological and political reform of physical education courses combined with recreational exercise therapy. The study used the Self Rating Depression Scale (SDS) to assess students’ mental health status.ResultsBefore the experiment, there was no significant difference in the level of depression between the two groups of students (P>0.05); After the investigation, the depression level of the experimental group students was significantly improved and significantly lower than that of the control group students (P<0.05).ConclusionsThe combination of ideological and political reform in physical education courses and recreational exercise therapy greatly alleviates depression among college students. It can be used as an auxiliary means for treating depression among college students.AcknowledgementKey Project of Scientific Research Project of the Education Department of Hunan Province (No. 18A485).

Rechargeable Zn metal aqueous batteries featuring low cost, superior safety, and ultrahigh volumetric capacity are of great interest for large-scale applications. However, their practical implementation is hindered by poor reversibility and short cycling stability, which fundamentally result from the corrosion and the dendritic growth of the Zn metal anode in the aqueous electrolyte. Stabilization of Zn metal is therefore essential to achieve satisfactory performances. Here, we report a new electrolyte system containing a thickening agent (fumed silica) that can immobilize the water molecules and a homogenizing agent (fatty methyl ester ethoxylate) that assists in smoothing the Zn2+ cations deposition, which effectively alleviates the water-induced corrosion reaction and suppresses the Zn dendrite formation. Zn/Zn symmetric cells in the new electrolyte, therefore, show extraordinary reversibility with a coulombic efficiency of 99.5% that is the highest among those of the reported symmetric cells and a long cycling stability of 1500 h. Furthermore, the Zn-MnO2 full cell in this work exhibits equally excellent cycling stability with low capacity loss of 0.002% per cycle, which is superior to those of previously developed Zn metal batteries. This study offers a promising approach to stabilize Zn metal and enable high-performance Zn metal aqueous battery.

Rechargeable Zn metal aqueous batteries featuring low cost, superior safety, and ultrahigh volumetric capacity are of great interest for large-scale applications. However, their practical implementation is hindered by poor reversibility and short cycling stability, which fundamentally result from the corrosion and the dendritic growth of the Zn metal anode in the aqueous electrolyte. Stabilization of Zn metal is therefore essential to achieve satisfactory performances. Here, we report a new electrolyte system containing a thickening agent (fumed silica) that can immobilize the water molecules and a homogenizing agent (fatty methyl ester ethoxylate) that assists in smoothing the Zn2+cations deposition, which effectively alleviates the water-induced corrosion reaction and suppresses the Zn dendrite formation. Zn/Zn symmetric cells in the new electrolyte, therefore, show extraordinary reversibility with a coulombic efficiency of 99.5% that is the highest among those of the reported symmetric cells and a long cycling stability of 1500 h. Furthermore, the Zn-MnO2full cell in this work exhibits equally excellent cycling stability with low capacity loss of 0.002% per cycle, which is superior to those of previously developed Zn metal batteries. This study offers a promising approach to stabilize Zn metal and enable high-performance Zn metal aqueous battery.