低甲醇透过直接甲醇燃料电池

A Nafion 117 complex membrane with low Pd content was prepared. It was found that at room temperature the diffusivity of methanol through this membrane was reduced to one fifth of that through bare Nafion 117 membrane . The proton conductivity of the modified membrane was also increased, significantly improving the discharge performance of the direct methanol fuel cell(DMFC).

杜藤方联合局部封闭治疗肝肾亏虚型膝骨关节炎临床观察

目的:观察杜藤方联合局部封闭治疗肝肾亏虚型膝骨关节炎的临床效果。方法:选取符合纳入标准的膝骨关节炎患者50例,随机分为两组各25例。对照组予局部封闭治疗,治疗组在对照组基础上予杜藤方口服,治疗3周后,分析两组的临床疗效、视觉模拟评分(VAS)、西安大略麦马斯特大学骨关节炎指数评分(WOMAC)。结果:治疗组总有效率为92.0%,显著高于对照组的68.0%(P﹤0.05)。两组患者的VAS评分、WOMAC功能指数评分均较治疗前有所降低(P﹤0.05),且治疗组的各项评分均优于对照组(P﹤0.05)。结论:杜藤方联合局部封闭治疗膝骨关节炎效果较好。