The fullerene complex, η 2 C 60 [Ru(NO)(PPh 3)] 2, has been prepared by the reaction of C 60 with Ru(NO) 2(PPh 3) 2 under a nitrogen atmosphere and refluxing. The new complex was characterized by means of elemental a...The fullerene complex, η 2 C 60 [Ru(NO)(PPh 3)] 2, has been prepared by the reaction of C 60 with Ru(NO) 2(PPh 3) 2 under a nitrogen atmosphere and refluxing. The new complex was characterized by means of elemental analysis, IR, XPS, electronic spectra and 31 P NMR. The results show that the complex of η 2 form can be formed by C 60 bonding to Ru(NO) 2(PPh 3) 2 in the σ π way and there is hyperconjugation effect in the molecule. So electrons will flow easier and photoelectric effect for this new compound is expected. In addition, the structure of the complex has been supposed. The ruthenium is 4 coordinate in the complex, bonding to two carbon atoms, to one PPh 3 and to one NO.展开更多
目的回顾性比较超选择直肠上动脉栓塞术(super-selective superior rectal artery branch embolization,SRAE)与吻合器痔上黏膜环切钉合术(procedure for prolapse and hemorrhoids,PPH)的疗效、围手术期安全性和预后。方法回顾性分析2...目的回顾性比较超选择直肠上动脉栓塞术(super-selective superior rectal artery branch embolization,SRAE)与吻合器痔上黏膜环切钉合术(procedure for prolapse and hemorrhoids,PPH)的疗效、围手术期安全性和预后。方法回顾性分析2017年6月—2018年12月苏州大学附属第二医院进行的37例SRAE和60例PPH患者,对比分析两组手术时间、出血量、血常规指标、住院时间、住院费用、切口感染出血、术后出血、术后疼痛发热、术后肛管狭窄、便秘发生、抗生素使用及12个月随访结果等情况。结果SRAE组患者年龄更高(P=0.009),多伴有更多高血压、糖尿病及心功能不全(P<0.001),手术时间短,术中出血量少,术后疼痛轻微、出血少,术后发热少、使用抗生素少,无术后肛管狭窄发生,住院时间短(P<0.001),但住院费用较PPH组高(P<0.001)。两组术后便秘发生率(P=0.067)、术前和术后血常规(P=0.154,P=0.278)差异无显著统计学意义。采用术后痔复发或再次手术作为联合终点,经Kaplan-Meier曲线联合Log-rank检验结果显示两组差异无显著统计学意义(P=0.56)。结论SRAE治疗痔安全可靠,在减少感染出血和术后疼痛等并发症方面较PPH有明显优势,但远期效果并不优于临床上其他常规的微创手术。因此,SRAE仅为高危患者提供了一个有益的治疗选择。展开更多
The fullerene complex,C60 RuH2(CO)(PPh3),has been prepared and characterize d by elemental analyses,IR and electronic spectra.In addition,the redox property of t he complex has been studied by cyclic voltammetry.The r...The fullerene complex,C60 RuH2(CO)(PPh3),has been prepared and characterize d by elemental analyses,IR and electronic spectra.In addition,the redox property of t he complex has been studied by cyclic voltammetry.The results s how that the reduction potential of C60 RuH2(CO)(PPh3)is more negative than that of C60.Meanwhile,with the extent of the complex reduction get to increace the stability of the complex ion is on the decrease.展开更多
文摘The fullerene complex, η 2 C 60 [Ru(NO)(PPh 3)] 2, has been prepared by the reaction of C 60 with Ru(NO) 2(PPh 3) 2 under a nitrogen atmosphere and refluxing. The new complex was characterized by means of elemental analysis, IR, XPS, electronic spectra and 31 P NMR. The results show that the complex of η 2 form can be formed by C 60 bonding to Ru(NO) 2(PPh 3) 2 in the σ π way and there is hyperconjugation effect in the molecule. So electrons will flow easier and photoelectric effect for this new compound is expected. In addition, the structure of the complex has been supposed. The ruthenium is 4 coordinate in the complex, bonding to two carbon atoms, to one PPh 3 and to one NO.
文摘目的回顾性比较超选择直肠上动脉栓塞术(super-selective superior rectal artery branch embolization,SRAE)与吻合器痔上黏膜环切钉合术(procedure for prolapse and hemorrhoids,PPH)的疗效、围手术期安全性和预后。方法回顾性分析2017年6月—2018年12月苏州大学附属第二医院进行的37例SRAE和60例PPH患者,对比分析两组手术时间、出血量、血常规指标、住院时间、住院费用、切口感染出血、术后出血、术后疼痛发热、术后肛管狭窄、便秘发生、抗生素使用及12个月随访结果等情况。结果SRAE组患者年龄更高(P=0.009),多伴有更多高血压、糖尿病及心功能不全(P<0.001),手术时间短,术中出血量少,术后疼痛轻微、出血少,术后发热少、使用抗生素少,无术后肛管狭窄发生,住院时间短(P<0.001),但住院费用较PPH组高(P<0.001)。两组术后便秘发生率(P=0.067)、术前和术后血常规(P=0.154,P=0.278)差异无显著统计学意义。采用术后痔复发或再次手术作为联合终点,经Kaplan-Meier曲线联合Log-rank检验结果显示两组差异无显著统计学意义(P=0.56)。结论SRAE治疗痔安全可靠,在减少感染出血和术后疼痛等并发症方面较PPH有明显优势,但远期效果并不优于临床上其他常规的微创手术。因此,SRAE仅为高危患者提供了一个有益的治疗选择。
文摘The fullerene complex,C60 RuH2(CO)(PPh3),has been prepared and characterize d by elemental analyses,IR and electronic spectra.In addition,the redox property of t he complex has been studied by cyclic voltammetry.The results s how that the reduction potential of C60 RuH2(CO)(PPh3)is more negative than that of C60.Meanwhile,with the extent of the complex reduction get to increace the stability of the complex ion is on the decrease.
