A Pd nanoparticle modified indium tin oxide (Pd NPs/ITO) electrode was prepared by cyclic voltammetry (CV) methods. The surface morphology of the modified electrode was characterized by scanning electron microscopy (S...
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A Pd nanoparticle modified indium tin oxide (Pd NPs/ITO) electrode was prepared by cyclic voltammetry (CV) methods. The surface morphology of the modified electrode was characterized by scanning electron microscopy (SEM). The Pd NPs/ITO electrode exhibits excellent electrocatalytic activity towards the oxidation of four low-carbon alcohols including methanol, ethanol, propanol and isopropanol in alkaline electrolyte at room temperature. The effects of reactant concentration and scan rate on the alcohols electrocatalytic oxidation at the Pd NPs/ITO electrode were discussed in detail and the electrocatalytic oxidations of four alcohols are confirmed as diffusion-controlled process from their similar CV characteristic. These low-carbon alcohols or their dissociation products are adsorbed on the surface of Pd NPs/ITO electrode, and simultaneously inhibit the adsorption and desorption of hydrogen, leading to the dominant of alcohol oxidation. The oxidation processes of four low-carbon alcohols are irreversible on Pd NPs/ITO electrode. The activity order of alcohol oxidation on Pd NPs/ITO electrode is identified as ethanol > propanol > methanol > isopropanol. The four alcohols can be easily identified from their positions of oxidation peak.
目的：评价瑞替普酶（rPA）给药方法在治疗急性下肢深静脉血栓中的临床有效性及安全性。方法将187例急性下肢深静脉血栓形成（ADVT）患者随机分为2组，其中静脉快速滴注 rPA 溶栓组85例，24 h 静脉泵入维持 rPA 溶栓组102例。通过对其...
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目的：评价瑞替普酶（rPA）给药方法在治疗急性下肢深静脉血栓中的临床有效性及安全性。方法将187例急性下肢深静脉血栓形成（ADVT）患者随机分为2组，其中静脉快速滴注 rPA 溶栓组85例，24 h 静脉泵入维持 rPA 溶栓组102例。通过对其治疗效果进行分析，比较两组患者治疗前后健患肢大、小腿消肿效果，溶栓效果，溶栓效率及溶栓期间并发症。结果两组患者治疗前后健患肢大、小腿消肿及溶栓效果比较差异均无统计学意义（P 均＞0．05）；24 h 静脉泵入组患者溶栓时间[（4．76±1．56）d]少于静脉快速滴注组溶栓时间[（6．56±0．83）d]，即24 h静脉泵入组溶栓效率高于静脉快速滴注组患者（P ＜0．05）；24 h 静脉泵入组患者溶栓期间并发症发生率（3．9％）明显少于静脉快速滴注组（17．6％）（P ＜0．05）。结论rPA 为治疗 ADVT 疗效好、起效迅速的溶栓药物，经静脉溶栓效果好，但24 h 静脉泵入较静脉快速滴注起效更为迅速，且更为安全。
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