b The discharge performance of Mg-Al-Pb-La anode was investigated by electrochemical techniques and compared withthat of Mg-Al-Pb alloy. The results indicate that the Mg-Al-Pb-La anode provides enhanced corrosion resi...b The discharge performance of Mg-Al-Pb-La anode was investigated by electrochemical techniques and compared withthat of Mg-Al-Pb alloy. The results indicate that the Mg-Al-Pb-La anode provides enhanced corrosion resistance at open circlepotential, and exhibits better discharge activity than the Mg-Al-Pb alloy. The utilization efficiency of Mg-Al-Pb-La anode ishigher than that of commercial Mg-Al-Zn （AZ） and Mg-Al-Mn （AM） alloys. A single Mg-air battery with Mg-Al-Pb-La alloy asthe anode and air as the cathode has an average discharge potential of 1.295 V and a discharge capacity of 1370 mA·h/g duringdischarge at 10 mA/cm2, which is higher than that of batteries using Mg-Li anodes. The enhancement in discharge performance ofthe Mg-Al-Pb-La anode is caused by its modified microstructure, which reduces the self-corrosion and accelerates the spalling ofoxidation products during battery discharge. Furthermore, the dissolution mechanism of Mg-Al-Pb-La anode during the dischargeprocess was analyzed.展开更多
In 2020,as COVID-19 spread in the globe,China Foundation for Peace and Development(CFPD)actively responded to the Joint Action for Defeating the COVID-19 within the Framework of the Silk Road Community Building Initia...In 2020,as COVID-19 spread in the globe,China Foundation for Peace and Development(CFPD)actively responded to the Joint Action for Defeating the COVID-19 within the Framework of the Silk Road Community Building Initiative launched by China NGO Network for International Exchanges(CNIE),gave full play to its own advantages.展开更多
基金Project(2015JC3004)supported by the Science and Technology Plan of Hunan Province,ChinaProject(2016JJ2147)supported by the Natural Science Foundation of Hunan Province,ChinaProject(51401243)supported by the National Natural Science Foundation of China
文摘b The discharge performance of Mg-Al-Pb-La anode was investigated by electrochemical techniques and compared withthat of Mg-Al-Pb alloy. The results indicate that the Mg-Al-Pb-La anode provides enhanced corrosion resistance at open circlepotential, and exhibits better discharge activity than the Mg-Al-Pb alloy. The utilization efficiency of Mg-Al-Pb-La anode ishigher than that of commercial Mg-Al-Zn （AZ） and Mg-Al-Mn （AM） alloys. A single Mg-air battery with Mg-Al-Pb-La alloy asthe anode and air as the cathode has an average discharge potential of 1.295 V and a discharge capacity of 1370 mA·h/g duringdischarge at 10 mA/cm2, which is higher than that of batteries using Mg-Li anodes. The enhancement in discharge performance ofthe Mg-Al-Pb-La anode is caused by its modified microstructure, which reduces the self-corrosion and accelerates the spalling ofoxidation products during battery discharge. Furthermore, the dissolution mechanism of Mg-Al-Pb-La anode during the dischargeprocess was analyzed.
文摘In 2020,as COVID-19 spread in the globe,China Foundation for Peace and Development(CFPD)actively responded to the Joint Action for Defeating the COVID-19 within the Framework of the Silk Road Community Building Initiative launched by China NGO Network for International Exchanges(CNIE),gave full play to its own advantages.
文摘目的 探讨不同助听模式的语前聋儿童听觉言语康复效果、家庭生活质量及两者间的相关性。方法 选取2020年3月至2020年7月在安徽医科大学第一附属医院行人工耳蜗植入术的语前聋儿童75例,其中58例符合纳排标准且连续随访1年而被纳入研究,按助听模式将儿童分为单侧人工耳蜗植入组(CI)21例,双耳双模式组(CI+HA)8例,双侧人工耳蜗植入组(BCI)29例。采用听觉能力分级标准(categories of auditory performance,CAP)评分、言语可懂度分级标准(speech intelligibility rate,SIR)评分、父母版言语空间特性量表(speech,spatial and qualities of hearing scale-parent's version,SSQ-P)评分及听力植入体儿童的家庭生活质量表(children using hearing implants quality of life,CuHI Qol)评估患儿听觉言语能力和家庭生活质量。结果 术前CI组、CI+HA组、BCI组CAP评分、SIR评分、SSQ-P评分比较,差异无统计学意义(P>0.05);术后3、6、12个月BCI组CAP评分、SIR评分、SSQ-P评分均高于CI+HA组,差异均有统计学意义(P<0.05);CI+HA组CAP评分、SIR评分、SSQ-P评分均高于CI组,差异均有统计学意义(P<0.05)。CI组、CI+HA组、BCI组言语感知评分、空间听力评分、听力音质评分、SSQ-P评分组间效应、时间效应、交互效应比较,差异均有统计学意义(P<0.05)。随时间延长,CI组、CI+HA组、BCI组SSQ-P评分均呈逐渐递增趋势。CI组、CI+HA组、BCI组不同时间点CuHI Qol评分时间效应比较,差异均有统计学意义(P<0.05),但组间效应、交互效应比较,差异均无统计学意义(P>0.05)。随时间推移,CI组、CI+HA组、BCI组家庭生活质量也越来越高。术后6个月,BCI组家庭生活质量最高,术后12个月,CI+HA组家庭生活质量评分上升明显。CuHI Qol评分与CAP评分、SIR评分、SSQ-P评分呈正相关,差异均有统计学意义(P<0.05)。结论 BCI具备双耳信息整合功能,空间听力优势较双耳双模式及单侧CI更明显,是极佳的助听补偿方式。术后听觉言语康复效果越好,家庭生活质量也越高。
