Vanadium redox flow batteries(VRFBs)are one of the most promising energy storage systems owing to their safety,efficiency,flexibility and scalability.However,the commercial viability of VRFBs is still hindered by the ...Vanadium redox flow batteries(VRFBs)are one of the most promising energy storage systems owing to their safety,efficiency,flexibility and scalability.However,the commercial viability of VRFBs is still hindered by the low electrochemical performance of the available carbon-based electrodes.Defect engineering is a powerful strategy to enhance the redox catalytic activity of carbon-based electrodes for VRFBs.In this paper,uniform carbon defects are introduced on the surfaces of carbon felt(CF)electrode by Ar plasma etching.Together with a higher specific surface area,the Ar plasma treated CF offers additional catalytic sites,allowing faster and more reversible oxidation/reduction reactions of vanadium ions.As a result,the VRFB using plasma treated electrode shows a power density of 1018.3 mW/cm^(2),an energy efficiency(EE)of 84.5%,and the EE remains stable over 1000 cycles.展开更多
目的:探讨甲巯咪唑联合普萘洛尔治疗对轻中度甲状腺功能亢进症(甲亢)患者甲状腺功能、血清皮质醇(cortisol, COR)、促肾上腺皮质激素(adrenocorticotropic hormone, ACTH)水平的影响。方法:选择我院2017年1月-2018年1月诊治的88例轻中...目的:探讨甲巯咪唑联合普萘洛尔治疗对轻中度甲状腺功能亢进症(甲亢)患者甲状腺功能、血清皮质醇(cortisol, COR)、促肾上腺皮质激素(adrenocorticotropic hormone, ACTH)水平的影响。方法:选择我院2017年1月-2018年1月诊治的88例轻中度甲亢,按照随机数字表法分为观察组与对照组,每组各44例。对照组予甲巯咪唑治疗,观察组予甲巯咪唑联合普萘洛尔治疗,均治疗3个月。比较临床疗效,检测治疗前后血清促甲状腺激素(thyroid stimulating hormone, TSH)、游离三碘甲状腺素(free triiodothyronine, FT 3)、游离甲状腺素(free thyroxine, FT 4)、COR、ACTH水平变化,观察治疗前后心率变化,记录不良反应发生情况。结果:观察组、对照组治疗总有效率分别为95.45%(42/44)、81.82%(36/44),比较差异有统计学意义(χ^ 2=4.061, P =0.044)。与对照组比较,观察组治疗后TSH、COR水平升高,FT 3、FT 4、ACTH水平与心率降低,差异有统计学意义( P <0.001);与本组治疗前比较,两组治疗后TSH、COR水平明显升高,FT 3、FT 4、ACTH水平与心率显著降低,差异有统计学意义( P <0.001)。两组不良反应发生率比较差异无统计学意义( P =1.000)。结论:甲巯咪唑联合普萘洛尔治疗轻中度甲亢疗效较好,不良反应少,可明显改善甲状腺功能,提高血清COR水平,降低ACTH水平。展开更多
基金Project(Xiang Zu [2016] 91) supported by the “100 Talented Teams” of Hunan Province,ChinaProject(2018RS3077) supported by the Huxiang High-level Talents Program,China+2 种基金Project(22002009) supported by the National Natural Science Foundation of ChinaProject(2021JJ40565) supported by the Natural Science Foundation of Hunan Province,ChinaProject(19C0054) supported by the Scientific Research Foundation of Hunan Provincial Education Department,China。
文摘Vanadium redox flow batteries(VRFBs)are one of the most promising energy storage systems owing to their safety,efficiency,flexibility and scalability.However,the commercial viability of VRFBs is still hindered by the low electrochemical performance of the available carbon-based electrodes.Defect engineering is a powerful strategy to enhance the redox catalytic activity of carbon-based electrodes for VRFBs.In this paper,uniform carbon defects are introduced on the surfaces of carbon felt(CF)electrode by Ar plasma etching.Together with a higher specific surface area,the Ar plasma treated CF offers additional catalytic sites,allowing faster and more reversible oxidation/reduction reactions of vanadium ions.As a result,the VRFB using plasma treated electrode shows a power density of 1018.3 mW/cm^(2),an energy efficiency(EE)of 84.5%,and the EE remains stable over 1000 cycles.
文摘目的:探讨甲巯咪唑联合普萘洛尔治疗对轻中度甲状腺功能亢进症(甲亢)患者甲状腺功能、血清皮质醇(cortisol, COR)、促肾上腺皮质激素(adrenocorticotropic hormone, ACTH)水平的影响。方法:选择我院2017年1月-2018年1月诊治的88例轻中度甲亢,按照随机数字表法分为观察组与对照组,每组各44例。对照组予甲巯咪唑治疗,观察组予甲巯咪唑联合普萘洛尔治疗,均治疗3个月。比较临床疗效,检测治疗前后血清促甲状腺激素(thyroid stimulating hormone, TSH)、游离三碘甲状腺素(free triiodothyronine, FT 3)、游离甲状腺素(free thyroxine, FT 4)、COR、ACTH水平变化,观察治疗前后心率变化,记录不良反应发生情况。结果:观察组、对照组治疗总有效率分别为95.45%(42/44)、81.82%(36/44),比较差异有统计学意义(χ^ 2=4.061, P =0.044)。与对照组比较,观察组治疗后TSH、COR水平升高,FT 3、FT 4、ACTH水平与心率降低,差异有统计学意义( P <0.001);与本组治疗前比较,两组治疗后TSH、COR水平明显升高,FT 3、FT 4、ACTH水平与心率显著降低,差异有统计学意义( P <0.001)。两组不良反应发生率比较差异无统计学意义( P =1.000)。结论:甲巯咪唑联合普萘洛尔治疗轻中度甲亢疗效较好,不良反应少,可明显改善甲状腺功能,提高血清COR水平,降低ACTH水平。
