In this study,the factors affecting the formation of small black spot defects on the surface of a hot-dip galvanized pure zinc strip are analyzed. These defects are primarily formed w hen the iron-aluminum inhibition ...In this study,the factors affecting the formation of small black spot defects on the surface of a hot-dip galvanized pure zinc strip are analyzed. These defects are primarily formed w hen the iron-aluminum inhibition layer is incompletely formed or fails to form or when foreign matter adheres to the surface or embeds in the zinc layer.The defects can be reduced by controlling the cleanliness and activity of the strip base before coating,regulating the zinc pot process parameters,and ensuring the cleanliness of the passline and workshop.展开更多
Purpose: To evaluate the quality of three-dimensional (3D) CT angiography images of the abdominal viscera with small focal spot, low tube voltage, and iterative model reconstruction technique (IMR). Materials and Meth...Purpose: To evaluate the quality of three-dimensional (3D) CT angiography images of the abdominal viscera with small focal spot, low tube voltage, and iterative model reconstruction technique (IMR). Materials and Methods: Seven patients with suspected disease of the pancreatobiliary system had undergone CT with high-quality CTA protocol in the present study. There were 5 men and 2 women, ranging in age from 52 to 80 years (mean: 64 years). Results: Depiction of abdominal small artery, small portal vein was possible in all cases. In two cases that we were able to compare, it was superior to standard CTA in small vascular depiction in CTA made clearly in high quality protocol. Conclusions: Although the use of small focal spot, low tube voltage, and IMR can produce higher-quality images of abdominal vessels than standard CTA, this improvement is not significant at elevated radiation doses.展开更多
目的:探究30%超分子水杨酸联合小光斑点阵CO_(2)激光治疗轻中度寻常痤疮的有效性和安全性。方法:选取2022年11月-2023年6月就诊于吉林大学中日联谊医院30例面部轻、中度寻常痤疮患者,以患者面部矢状线为界,按照随机数表将患者的双侧面...目的:探究30%超分子水杨酸联合小光斑点阵CO_(2)激光治疗轻中度寻常痤疮的有效性和安全性。方法:选取2022年11月-2023年6月就诊于吉林大学中日联谊医院30例面部轻、中度寻常痤疮患者,以患者面部矢状线为界,按照随机数表将患者的双侧面部随机分为对照侧和观察侧。对照侧(n=30),给予30%超分子水杨酸治疗(每4周治疗1次);观察侧(n=30),给予小光斑点阵CO_(2)激光治疗后即刻30%超分子水杨酸治疗(每4周治疗1次)。通过拍照、皮肤检测仪、皮损计数和痤疮综合分级系统(The global acne grading system,GAGS)评分等评估治疗的有效性;通过皮损清除率判定临床疗效,同时观察不良反应以评估安全性。治疗结束后12周对患者进行随访,评估复发情况。结果:治疗12周后,患者观察侧的临床疗效优于对照侧(P<0.05);观察侧的皮损清除效果明显优于对照侧(P<0.001);观察侧的GAGS评分改善程度明显优于对照侧(P<0.001)。治疗期间两侧均未出现严重不良反应。结论:30%超分子水杨酸联合小光斑点阵CO_(2)激光疗法对清除轻中度痤疮皮损优于30%超分子水杨酸单一治疗,具有见效快、安全性高、操作简单、患者满意度高等优点,且不增加患者相关不良反应。展开更多
文摘In this study,the factors affecting the formation of small black spot defects on the surface of a hot-dip galvanized pure zinc strip are analyzed. These defects are primarily formed w hen the iron-aluminum inhibition layer is incompletely formed or fails to form or when foreign matter adheres to the surface or embeds in the zinc layer.The defects can be reduced by controlling the cleanliness and activity of the strip base before coating,regulating the zinc pot process parameters,and ensuring the cleanliness of the passline and workshop.
文摘Purpose: To evaluate the quality of three-dimensional (3D) CT angiography images of the abdominal viscera with small focal spot, low tube voltage, and iterative model reconstruction technique (IMR). Materials and Methods: Seven patients with suspected disease of the pancreatobiliary system had undergone CT with high-quality CTA protocol in the present study. There were 5 men and 2 women, ranging in age from 52 to 80 years (mean: 64 years). Results: Depiction of abdominal small artery, small portal vein was possible in all cases. In two cases that we were able to compare, it was superior to standard CTA in small vascular depiction in CTA made clearly in high quality protocol. Conclusions: Although the use of small focal spot, low tube voltage, and IMR can produce higher-quality images of abdominal vessels than standard CTA, this improvement is not significant at elevated radiation doses.
文摘目的:探究30%超分子水杨酸联合小光斑点阵CO_(2)激光治疗轻中度寻常痤疮的有效性和安全性。方法:选取2022年11月-2023年6月就诊于吉林大学中日联谊医院30例面部轻、中度寻常痤疮患者,以患者面部矢状线为界,按照随机数表将患者的双侧面部随机分为对照侧和观察侧。对照侧(n=30),给予30%超分子水杨酸治疗(每4周治疗1次);观察侧(n=30),给予小光斑点阵CO_(2)激光治疗后即刻30%超分子水杨酸治疗(每4周治疗1次)。通过拍照、皮肤检测仪、皮损计数和痤疮综合分级系统(The global acne grading system,GAGS)评分等评估治疗的有效性;通过皮损清除率判定临床疗效,同时观察不良反应以评估安全性。治疗结束后12周对患者进行随访,评估复发情况。结果:治疗12周后,患者观察侧的临床疗效优于对照侧(P<0.05);观察侧的皮损清除效果明显优于对照侧(P<0.001);观察侧的GAGS评分改善程度明显优于对照侧(P<0.001)。治疗期间两侧均未出现严重不良反应。结论:30%超分子水杨酸联合小光斑点阵CO_(2)激光疗法对清除轻中度痤疮皮损优于30%超分子水杨酸单一治疗,具有见效快、安全性高、操作简单、患者满意度高等优点,且不增加患者相关不良反应。
