目的:探讨前置胎盘的病因、临床表现及诊治。方法:对35例前置胎盘的临床资料进行回顾性分析。常常采用期待疗法、抑制宫缩治疗等等治疗方法。结果:前置胎盘孕妇35例,发生率为0.7%。其临床表现以前置胎盘对孕产妇的影响,妊娠晚期突发无...目的:探讨前置胎盘的病因、临床表现及诊治。方法:对35例前置胎盘的临床资料进行回顾性分析。常常采用期待疗法、抑制宫缩治疗等等治疗方法。结果:前置胎盘孕妇35例,发生率为0.7%。其临床表现以前置胎盘对孕产妇的影响,妊娠晚期突发无痛性阴道反复出血,以产后出血者为多。本文前置胎盘35例中19例采用期待疗法,其余16例因入院时出血量过多(<500 m l)以及已近足月行子宫下段剖宫产术终止妊娠,取得良好结果。结论:加强孕期保健宣教,减少发病的高危因素,对前置胎盘进行早期诊断和治疗,有望减低前置胎盘的发生率和死亡率。展开更多
A coaxial dielectric barrier discharge (DBD) reactor was used for plasma-catalytic degradation of tetracycline hydrochloride over a series of Mn/γ-Al2O3 catalysts prepared by the incipient wetness impregnation method...A coaxial dielectric barrier discharge (DBD) reactor was used for plasma-catalytic degradation of tetracycline hydrochloride over a series of Mn/γ-Al2O3 catalysts prepared by the incipient wetness impregnation method.The combination of plasma and the Mn/γ-Al2O3 catalysts significantly enhanced the degradation efficiency of tetracycline hydrochloride compared to the plasma process alone,with the 10% Mn/γ-Al2O3 catalyst exhibiting the best tetracycline hydrochloride degradation efficiency.A maximum degradation efficiency of 99.3% can be achieved after 5 min oxidation and a discharge power of 1.3 W,with only 69.7% by a single plasma process.The highest energy yield of the plasma-catalytic process is 91.7 g kWh-1.Probable reaction mechanisms of the plasma-catalytic removal of tetracycline hydrochloride were also proposed.展开更多
文摘目的:探讨前置胎盘的病因、临床表现及诊治。方法:对35例前置胎盘的临床资料进行回顾性分析。常常采用期待疗法、抑制宫缩治疗等等治疗方法。结果:前置胎盘孕妇35例,发生率为0.7%。其临床表现以前置胎盘对孕产妇的影响,妊娠晚期突发无痛性阴道反复出血,以产后出血者为多。本文前置胎盘35例中19例采用期待疗法,其余16例因入院时出血量过多(<500 m l)以及已近足月行子宫下段剖宫产术终止妊娠,取得良好结果。结论:加强孕期保健宣教,减少发病的高危因素,对前置胎盘进行早期诊断和治疗,有望减低前置胎盘的发生率和死亡率。
文摘A coaxial dielectric barrier discharge (DBD) reactor was used for plasma-catalytic degradation of tetracycline hydrochloride over a series of Mn/γ-Al2O3 catalysts prepared by the incipient wetness impregnation method.The combination of plasma and the Mn/γ-Al2O3 catalysts significantly enhanced the degradation efficiency of tetracycline hydrochloride compared to the plasma process alone,with the 10% Mn/γ-Al2O3 catalyst exhibiting the best tetracycline hydrochloride degradation efficiency.A maximum degradation efficiency of 99.3% can be achieved after 5 min oxidation and a discharge power of 1.3 W,with only 69.7% by a single plasma process.The highest energy yield of the plasma-catalytic process is 91.7 g kWh-1.Probable reaction mechanisms of the plasma-catalytic removal of tetracycline hydrochloride were also proposed.
