The solubilities of trimethylolethane in butanol,methyl acetate,ethyl acetate as well as in mixed solvents of(methanol+ethyl acetate) and(ethanol+ethyl acetate) were measured with the gravimetric method in the tempera...The solubilities of trimethylolethane in butanol,methyl acetate,ethyl acetate as well as in mixed solvents of(methanol+ethyl acetate) and(ethanol+ethyl acetate) were measured with the gravimetric method in the temperature range from 283.15 K to 318.15 K under atmosphere pressure.The experiment results showed that the solubility of trimethylolethane increased with the temperature,or along with the concentration of methanol or ethanol in the solvents of(methanol+ethyl acetate) and(ethanol + ethyl acetate).In addition,the experiment values were correlated by the van't Hoff equation,Modi fied Apelblat Equation,λh Equation,CNIBS/R-K equation and Jouyban–Acree Model.The Modi fied Apelblat Equation provided the best fitting results of the solubility data of TME in the pure solvents while the CNIBS/R-K model showed the best estimation of the solubility in the binary solvent mixtures.Furthermore,the density functional theory(DFT) calculations showed that solubility in different solvents related to the strength of the interaction between the trimethylolethane and the solvent molecules.Finally,the standard molar enthalpy and molar entropy of trimethylolethane during the dissolving process was also calculated by Modi fied Apelblat equation in this work.展开更多
目的:探讨经肛直肠全系膜切除术(transanal total mesorectal excision,taTME)治疗低位及超低位直肠癌的临床效果和安全性。方法:回顾性分析行taTME治疗的7例低位及超低位直肠癌患者的临床资料,评价治疗的可行性、安全性和疗效。结果:7...目的:探讨经肛直肠全系膜切除术(transanal total mesorectal excision,taTME)治疗低位及超低位直肠癌的临床效果和安全性。方法:回顾性分析行taTME治疗的7例低位及超低位直肠癌患者的临床资料,评价治疗的可行性、安全性和疗效。结果:7例患者均顺利完成腹腔镜辅助taTME,无中转开腹,3例用管型吻合器行结-直肠端端吻合,经腹经肛门同时手术6例,序贯进行1例,手术时间平均(205.7±104.8)min,术中出血量平均(35.7±31.1)mL;保肛率100%(7/7);3例患者行预防性回肠造口,均于术后3个月行回肠还纳。拔除骶前引流管时间(5.4±3.0)d,术后(9.6±2.4)d出院;吻合口漏2例,无死亡、吻合口狭窄、肠梗阻、切口感染等并发症发生。淋巴结检出数平均为(10.4±2.8)枚,阳性淋巴结(0.7±1.7)枚。结论:taTME技术治疗低位及超低位直肠癌安全可靠。展开更多
基金Supported by the NSFC(21576206)the Program for Changjiang Scholars and Innovative Research Team in University(IRT_15R46)
文摘The solubilities of trimethylolethane in butanol,methyl acetate,ethyl acetate as well as in mixed solvents of(methanol+ethyl acetate) and(ethanol+ethyl acetate) were measured with the gravimetric method in the temperature range from 283.15 K to 318.15 K under atmosphere pressure.The experiment results showed that the solubility of trimethylolethane increased with the temperature,or along with the concentration of methanol or ethanol in the solvents of(methanol+ethyl acetate) and(ethanol + ethyl acetate).In addition,the experiment values were correlated by the van't Hoff equation,Modi fied Apelblat Equation,λh Equation,CNIBS/R-K equation and Jouyban–Acree Model.The Modi fied Apelblat Equation provided the best fitting results of the solubility data of TME in the pure solvents while the CNIBS/R-K model showed the best estimation of the solubility in the binary solvent mixtures.Furthermore,the density functional theory(DFT) calculations showed that solubility in different solvents related to the strength of the interaction between the trimethylolethane and the solvent molecules.Finally,the standard molar enthalpy and molar entropy of trimethylolethane during the dissolving process was also calculated by Modi fied Apelblat equation in this work.
文摘目的:探讨经肛直肠全系膜切除术(transanal total mesorectal excision,taTME)治疗低位及超低位直肠癌的临床效果和安全性。方法:回顾性分析行taTME治疗的7例低位及超低位直肠癌患者的临床资料,评价治疗的可行性、安全性和疗效。结果:7例患者均顺利完成腹腔镜辅助taTME,无中转开腹,3例用管型吻合器行结-直肠端端吻合,经腹经肛门同时手术6例,序贯进行1例,手术时间平均(205.7±104.8)min,术中出血量平均(35.7±31.1)mL;保肛率100%(7/7);3例患者行预防性回肠造口,均于术后3个月行回肠还纳。拔除骶前引流管时间(5.4±3.0)d,术后(9.6±2.4)d出院;吻合口漏2例,无死亡、吻合口狭窄、肠梗阻、切口感染等并发症发生。淋巴结检出数平均为(10.4±2.8)枚,阳性淋巴结(0.7±1.7)枚。结论:taTME技术治疗低位及超低位直肠癌安全可靠。