Corrosion of Refractory Alumina-Graphite and Alumina-Graphite-Zirconia in Slag Containing Titania

The wettability of the molten steel/Na 2O Li 2O SiO 2 B 2O 3 slag system was studied by a sessile drop method. It was found that the variation of the interfacial tension with the temperature in the molten steel/slag system is pretty little in the temperature range of 1 803-1 873 K. The interfacial tension remarkably decreases with increasing the oxygen content and/or sulfur content in molten steel. The contact angle for the molten steel/slag system is 153°-173°.

CT图像纹理分析方法对喉癌术前T分期的研究价值

目的探究使用计算机断层成像纹理分析(computed tomography texture analysis CTTA)鉴别喉鳞状细胞癌术前T分期方面的评价。方法回顾性分析2016年1月~2018年12月我科经手术及病理证实的40例T1-4喉鳞状细胞癌颈部CT图像。运用MaZda4.6软件对CT平扫及增强图像上的病灶进行勾画后,提取图像纹理特征。获取纹理分析的峰度(Kurtosis)、相关性(Correlation)、逆差距(InvDfMom)、熵(Entropy)4个参数,比较在平扫和增强CT上喉鳞状细胞癌T分期以及分化程度的纹理分析参数差别。结果峰度和逆差距在喉鳞状细胞癌增强CT图像上对T分期(T1-2和T3-4)有统计学意义(P<0.05);熵在喉鳞状细胞癌平扫和增强CT图像上对T分期(T1-2和T3-4)均有统计学意义(P<0.05);结论 CT纹理分析有助于喉鳞状细胞癌术前分期和预后评估,指导临床治疗。