Aqueous zinc-ion batteries have been regarded as the most potential candidate to substitute lithium-ion batteries.However,many serious challenges such as suppressing zinc dendrite growth and undesirable reactions,and ...Aqueous zinc-ion batteries have been regarded as the most potential candidate to substitute lithium-ion batteries.However,many serious challenges such as suppressing zinc dendrite growth and undesirable reactions,and achieving fully accepted mechanism also have not been solved.Herein,the commensal composite microspheres withα-MnO_(2) nano-wires and carbon nanotubes were achieved and could effectively suppress ZnSO_(4)·3Zn(OH)_(2)·nH_(2)O rampant crystallization.The electrode assembled with the microspheres delivered a high initial capacity at a current density of 0.05 A g^(-1) and maintained a significantly prominent capacity retention of 88%over 2500 cycles.Furthermore,a novel energy-storage mechanism,in which multivalent manganese oxides play a synergistic effect,was comprehen-sively investigated by the quantitative and qualitative analysis for ZnSO_(4)·3Zn(OH)_(2)·nH_(2)O.The capacity contribution of multivalent manganese oxides and the crystal structure dissection in the transformed processes were completely identified.Therefore,our research could provide a novel strategy for designing improved electrode structure and a comprehensive understanding of the energy storage mechanism of α-MnO_(2) cathodes.展开更多
The increasing temperature in the Yellow River Basin has led to a rapid rise in the melting level height,at a rate of 5.98 m yr^(-1)during the cold season,which further contributes to the transition from snowfall to r...The increasing temperature in the Yellow River Basin has led to a rapid rise in the melting level height,at a rate of 5.98 m yr^(-1)during the cold season,which further contributes to the transition from snowfall to rainfall patterns.Between 1979 and 2020,there has been a decrease in snowfall in the Yellow River Basin at a rate of-3.03 mm dec^(-1),while rainfall has been increasing at a rate of 1.00 mm dec^(-1).Consequently,the snowfall-to-rainfall ratio(SRR)has decreased.Snowfall directly replenishes terrestrial water storage(TWS)in solid form until it melts,while rainfall is rapidly lost through runoff and evaporation,in addition to infiltrating underground or remaining on the surface.Therefore,the decreasing SRR accelerates the depletion of water resources.According to the surface water balance equation,the reduction in precipitation and runoff,along with an increase in evaporation,results in a decrease in TWS during the cold season within the Yellow River Basin.In addition to climate change,human activities,considering the region's dense population and extensive agricultural land,also accelerate the decline of TWS.Notably,irrigation accounts for the largest proportion of water withdrawals in the Yellow River Basin(71.8%)and primarily occurs during the warm season(especially from June to August).The impact of human activities and climate change on the water cycle requires further in-depth research.展开更多
目的 探讨基于正念的消退和再巩固创伤干预(trauma interventions using mindfulness based extinction and reconsolidation, TIMBER)对意外创伤肢体功能障碍康复期患者创伤后应激症状的影响。方法 采用方便取样的方法,选取2022年3月至...目的 探讨基于正念的消退和再巩固创伤干预(trauma interventions using mindfulness based extinction and reconsolidation, TIMBER)对意外创伤肢体功能障碍康复期患者创伤后应激症状的影响。方法 采用方便取样的方法,选取2022年3月至2023年5月陆军军医大学第一附属医院康复医学科收治的创伤康复期患者(impact of event scale-revised, IES-R总分≥33分)46例,采用随机数字表法分为干预组和对照组,干预组接受TIMBER干预,对照组进行心理健康相关知识宣教。在干预前(T1)、干预结束时(T2)和干预结束后1个月(T3)使用事件影响量表修订版(IES-R)、医院焦虑抑郁量表(HADS)、睡眠状况自评量表(SRSS)对所有被试进行测量,比较两组患者创伤后应激症状、焦虑症状、抑郁症状和睡眠的变化。结果 两组患者人口统计学信息及各心理学变量在T1时差异均无统计学意义(P>0.05);干预组在T2和T3时的IES-R总分及各维度评分、焦虑、抑郁和睡眠评分显著低于对照组(P<0.05);干预组在T2和T3时的IES-R总分及各维度评分、焦虑、抑郁和睡眠评分显著低于T1(P<0.01);与T1相比,对照组T2、T3时的回避、闯入2个维度评分及IES-R总分有一定程度降低,差异有统计学意义(P<0.05),而高警觉、焦虑、抑郁和睡眠评分差异无统计学意义(P>0.05)。结论 TIMBER可以显著改善意外创伤肢体功能障碍康复期患者的创伤后应激症状、焦虑抑郁症状及睡眠。展开更多
基金This work is supported by the National Nature Science Foundation of China(51972108,52171200)Changsha Special Project(kh2301006)the Education Department of Hunan Province(19C0576).
文摘Aqueous zinc-ion batteries have been regarded as the most potential candidate to substitute lithium-ion batteries.However,many serious challenges such as suppressing zinc dendrite growth and undesirable reactions,and achieving fully accepted mechanism also have not been solved.Herein,the commensal composite microspheres withα-MnO_(2) nano-wires and carbon nanotubes were achieved and could effectively suppress ZnSO_(4)·3Zn(OH)_(2)·nH_(2)O rampant crystallization.The electrode assembled with the microspheres delivered a high initial capacity at a current density of 0.05 A g^(-1) and maintained a significantly prominent capacity retention of 88%over 2500 cycles.Furthermore,a novel energy-storage mechanism,in which multivalent manganese oxides play a synergistic effect,was comprehen-sively investigated by the quantitative and qualitative analysis for ZnSO_(4)·3Zn(OH)_(2)·nH_(2)O.The capacity contribution of multivalent manganese oxides and the crystal structure dissection in the transformed processes were completely identified.Therefore,our research could provide a novel strategy for designing improved electrode structure and a comprehensive understanding of the energy storage mechanism of α-MnO_(2) cathodes.
基金National Natural Science Foundation of China (42041004)。
文摘The increasing temperature in the Yellow River Basin has led to a rapid rise in the melting level height,at a rate of 5.98 m yr^(-1)during the cold season,which further contributes to the transition from snowfall to rainfall patterns.Between 1979 and 2020,there has been a decrease in snowfall in the Yellow River Basin at a rate of-3.03 mm dec^(-1),while rainfall has been increasing at a rate of 1.00 mm dec^(-1).Consequently,the snowfall-to-rainfall ratio(SRR)has decreased.Snowfall directly replenishes terrestrial water storage(TWS)in solid form until it melts,while rainfall is rapidly lost through runoff and evaporation,in addition to infiltrating underground or remaining on the surface.Therefore,the decreasing SRR accelerates the depletion of water resources.According to the surface water balance equation,the reduction in precipitation and runoff,along with an increase in evaporation,results in a decrease in TWS during the cold season within the Yellow River Basin.In addition to climate change,human activities,considering the region's dense population and extensive agricultural land,also accelerate the decline of TWS.Notably,irrigation accounts for the largest proportion of water withdrawals in the Yellow River Basin(71.8%)and primarily occurs during the warm season(especially from June to August).The impact of human activities and climate change on the water cycle requires further in-depth research.
文摘目的 探讨基于正念的消退和再巩固创伤干预(trauma interventions using mindfulness based extinction and reconsolidation, TIMBER)对意外创伤肢体功能障碍康复期患者创伤后应激症状的影响。方法 采用方便取样的方法,选取2022年3月至2023年5月陆军军医大学第一附属医院康复医学科收治的创伤康复期患者(impact of event scale-revised, IES-R总分≥33分)46例,采用随机数字表法分为干预组和对照组,干预组接受TIMBER干预,对照组进行心理健康相关知识宣教。在干预前(T1)、干预结束时(T2)和干预结束后1个月(T3)使用事件影响量表修订版(IES-R)、医院焦虑抑郁量表(HADS)、睡眠状况自评量表(SRSS)对所有被试进行测量,比较两组患者创伤后应激症状、焦虑症状、抑郁症状和睡眠的变化。结果 两组患者人口统计学信息及各心理学变量在T1时差异均无统计学意义(P>0.05);干预组在T2和T3时的IES-R总分及各维度评分、焦虑、抑郁和睡眠评分显著低于对照组(P<0.05);干预组在T2和T3时的IES-R总分及各维度评分、焦虑、抑郁和睡眠评分显著低于T1(P<0.01);与T1相比,对照组T2、T3时的回避、闯入2个维度评分及IES-R总分有一定程度降低,差异有统计学意义(P<0.05),而高警觉、焦虑、抑郁和睡眠评分差异无统计学意义(P>0.05)。结论 TIMBER可以显著改善意外创伤肢体功能障碍康复期患者的创伤后应激症状、焦虑抑郁症状及睡眠。
