RESUMO
Objective To observe the clinical safety and prognosis effect of laparoscopic cholecystectomy in the treatment of acute cholecystitis complicating gallstones.Methods Seventy cases of acute cholecystitis complicating gallstones treated by laparoscopic cholecystectomy in the hospital from December 2013 to October 2016 were retrospectively analyzed,and randomly divided into experimental group and control group.The patients in the control group received clinical open surgery,while the experimental group received laparoscopic surgical treatment.The operative effect,postoperative recovery and complication occurrence rate were observed in the two groups.Results The operation time,intraoperative bleeding volume and hospitalization time in the experimental group were significantly better than those in the control group(P＜0.05);the exhaust time,pain duration,drainage time in the experimental group were significantly lower than those in the control group(P＜0.05),and the incidence rate of postoperative complications in the experimental group was significantly lower than that in the control group(P＜0.05).Conclusion The operative strategy by adopting laparoscopic cholecystectomy for treating acute cholecystitis complicating gallstones has good clinical value.
RESUMO
To improve the desulfurization efficiency of sorbents at low cost, modified semi-coke was used as the substrate for mixed metal oxides (ZFM; oxides of zinc [Zn], iron [Fe], and manganese [Mn]) in hot gas desulfurization. Performance of the prepared ZFM/modified semi-coke (MS) sorbents were evaluated in a fixed-bed reactor in the temperature range 400-550°C. Results showed that the molar ratio of Mn to Zn, effect of the substrate, the calcination temperature, and the sulfidation temperature influenced the performance of the sorbents. Optimum conditions for the preparation of the ZFM/MS sorbents were molar ratio of Mn(NO(3))(2)·6H(2)O, Zn(NO(3))(2), and Fe(NO(3))(3), 0.6:1:2; mass ratio of ZFM0.6 to modified semi-coke support, 1:1; and calcination temperature, 600°C. The ZFM0.6/MS sorbent thus prepared exhibited the best sorption sulfur capacity of 27.46% at 450°C.
