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
目的观察Hippo信号通路在乙烯菌核利致小鼠尿道下裂中的作用。方法将8周龄ICR孕鼠随机分为实验组和对照组,每组各10只,实验组在孕12~18 d连续7天经口给予400 mg/(kg·d)乙烯菌核利,对照组给予等体积的大豆油。分别于子鼠出生后第60...目的观察Hippo信号通路在乙烯菌核利致小鼠尿道下裂中的作用。方法将8周龄ICR孕鼠随机分为实验组和对照组,每组各10只,实验组在孕12~18 d连续7天经口给予400 mg/(kg·d)乙烯菌核利,对照组给予等体积的大豆油。分别于子鼠出生后第60天随机取实验组和对照组小鼠阴茎各20条,采用实时荧光定量PCR检测Hippo信号通路的关键基因Mst1、Lats1、Taz、Yap及雄激素受体基因Ar的表达丰度,Western blot方法检测Hippo信号通路下游Yes相关蛋白(Yap)的表达及其磷酸化水平。结果与对照组雄性子鼠相比,实验组雄性子鼠的肛门生殖器距离明显缩短[(9.2501±2.5504)vs.(16.1253±1.3562) mm,P<0.05]、阴茎质量明显较轻[(0.0293±0.0075)vs.(0.4731±0.004) g,P<0.05]、阴茎长度缩短[(5.3875±0.4524)vs.(12.4688±1.2290) mm,P<0.05],阴茎直径也较对照组小鼠小[(1.5513±0.1158)vs.(2.6013±0.1469) mm,P<0.05]。对照组小鼠阴茎中Hippo信号通路的关键基因Mst1、Lats1、Taz、Yap及雄激素受体基因Ar均表达;实验组Yap、Ar未表达,Mst1、Lats1的表达丰度高于对照组(6.6097±1.3188 vs. 0.3517±0.1524, 5.7071±2.7210 vs. 0.1235±0.0658,P<0.05),Taz的表达丰度低于对照组(0.3937±0.1519 vs. 3.2329±0.4339,P<0.05)。实验组小鼠阴茎Yap表达量降低(0.3348±0.0639 vs. 0.8023±0.4275,P<0.05)、磷酸化程度高于对照组(3.9940±0.2177 vs. 0.3128±0.0867,P<0.05)。结论乙烯菌核利致小鼠尿道下裂模型中,Ar未表达,Hippo信号通路被激活,Yap磷酸化增加,该通路可能在乙烯菌核利致雄性小鼠尿道下裂中起重要作用。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.
文摘目的观察Hippo信号通路在乙烯菌核利致小鼠尿道下裂中的作用。方法将8周龄ICR孕鼠随机分为实验组和对照组,每组各10只,实验组在孕12~18 d连续7天经口给予400 mg/(kg·d)乙烯菌核利,对照组给予等体积的大豆油。分别于子鼠出生后第60天随机取实验组和对照组小鼠阴茎各20条,采用实时荧光定量PCR检测Hippo信号通路的关键基因Mst1、Lats1、Taz、Yap及雄激素受体基因Ar的表达丰度,Western blot方法检测Hippo信号通路下游Yes相关蛋白(Yap)的表达及其磷酸化水平。结果与对照组雄性子鼠相比,实验组雄性子鼠的肛门生殖器距离明显缩短[(9.2501±2.5504)vs.(16.1253±1.3562) mm,P<0.05]、阴茎质量明显较轻[(0.0293±0.0075)vs.(0.4731±0.004) g,P<0.05]、阴茎长度缩短[(5.3875±0.4524)vs.(12.4688±1.2290) mm,P<0.05],阴茎直径也较对照组小鼠小[(1.5513±0.1158)vs.(2.6013±0.1469) mm,P<0.05]。对照组小鼠阴茎中Hippo信号通路的关键基因Mst1、Lats1、Taz、Yap及雄激素受体基因Ar均表达;实验组Yap、Ar未表达,Mst1、Lats1的表达丰度高于对照组(6.6097±1.3188 vs. 0.3517±0.1524, 5.7071±2.7210 vs. 0.1235±0.0658,P<0.05),Taz的表达丰度低于对照组(0.3937±0.1519 vs. 3.2329±0.4339,P<0.05)。实验组小鼠阴茎Yap表达量降低(0.3348±0.0639 vs. 0.8023±0.4275,P<0.05)、磷酸化程度高于对照组(3.9940±0.2177 vs. 0.3128±0.0867,P<0.05)。结论乙烯菌核利致小鼠尿道下裂模型中,Ar未表达,Hippo信号通路被激活,Yap磷酸化增加,该通路可能在乙烯菌核利致雄性小鼠尿道下裂中起重要作用。
