Background Despite the current availability of flow diverter devices(FDD), problems remains regarding optimal endovascular treatment(EVT) for blood blister-like aneurysms(BBAs) of the internal carotid artery(ICA). Obj...Background Despite the current availability of flow diverter devices(FDD), problems remains regarding optimal endovascular treatment(EVT) for blood blister-like aneurysms(BBAs) of the internal carotid artery(ICA). Objective To evaluate the safety and efficacy of EVT of BBAs in the ICA with a Willis covered stent. Methods 20 consecutive patients(5 men and 15 women) with ruptured BBAs underwent EVT using a Willis covered stent in two institutions from March 2013 to March 2018. Clinical observations, angiographic characteristics, and procedural and follow-up outcomes were retrospectively evaluated. Results 20 consecutive patients(5 men and 15 women) with ruptured BBAs underwent EVT using a Willis covered stent in two institutions from March 2013 to March 2018. Clinical observations, angiographic characteristics, and procedural and follow-up outcomes were retrospectively evaluated. Conclusion Our initial results demonstrate that reconstructive EVT using a Willis covered stent provides a viable approach to treat ICA BBAs. However, an expanded clinical evaluation and larger cohort are needed to confirm the results.展开更多
Based on the experience of GIS equipment maintenance, the causes of air leakage defects of GIS equipment running in a 330 substation were analyzed. After the equipment was disassembled, the main causes of air leakage ...Based on the experience of GIS equipment maintenance, the causes of air leakage defects of GIS equipment running in a 330 substation were analyzed. After the equipment was disassembled, the main causes of air leakage were found, and a series of improvement measures were taken to eliminate the GIS equipment leakage defect. And the effective and feasible advice was put forward for this type of air leakage problem. The results lay a foundation for the safe and stable operation of GIS equipment.展开更多
在抗震设计中,场地是指具有相似的反应谱特征的工程群体所在地,不仅仅是房屋基础下的一小块地基土。其范围相当于厂区、居民小区和自然村或不小于1.0 km 2的平面面积。结合场地的概念,通过对一些项目地基处理前后场地类别的分析,从地基...在抗震设计中,场地是指具有相似的反应谱特征的工程群体所在地,不仅仅是房屋基础下的一小块地基土。其范围相当于厂区、居民小区和自然村或不小于1.0 km 2的平面面积。结合场地的概念,通过对一些项目地基处理前后场地类别的分析,从地基处理对场地类别及特征周期的影响,提出了通过地基处理实现上部结构减震的方法。展开更多
基金financially supported by the National Natural Scientific Fund of China(grant number 81771951)the Science and Technology Commission of Shanghai(grant number 14DZ1941204)
文摘Background Despite the current availability of flow diverter devices(FDD), problems remains regarding optimal endovascular treatment(EVT) for blood blister-like aneurysms(BBAs) of the internal carotid artery(ICA). Objective To evaluate the safety and efficacy of EVT of BBAs in the ICA with a Willis covered stent. Methods 20 consecutive patients(5 men and 15 women) with ruptured BBAs underwent EVT using a Willis covered stent in two institutions from March 2013 to March 2018. Clinical observations, angiographic characteristics, and procedural and follow-up outcomes were retrospectively evaluated. Results 20 consecutive patients(5 men and 15 women) with ruptured BBAs underwent EVT using a Willis covered stent in two institutions from March 2013 to March 2018. Clinical observations, angiographic characteristics, and procedural and follow-up outcomes were retrospectively evaluated. Conclusion Our initial results demonstrate that reconstructive EVT using a Willis covered stent provides a viable approach to treat ICA BBAs. However, an expanded clinical evaluation and larger cohort are needed to confirm the results.
文摘Based on the experience of GIS equipment maintenance, the causes of air leakage defects of GIS equipment running in a 330 substation were analyzed. After the equipment was disassembled, the main causes of air leakage were found, and a series of improvement measures were taken to eliminate the GIS equipment leakage defect. And the effective and feasible advice was put forward for this type of air leakage problem. The results lay a foundation for the safe and stable operation of GIS equipment.
文摘在抗震设计中,场地是指具有相似的反应谱特征的工程群体所在地,不仅仅是房屋基础下的一小块地基土。其范围相当于厂区、居民小区和自然村或不小于1.0 km 2的平面面积。结合场地的概念,通过对一些项目地基处理前后场地类别的分析,从地基处理对场地类别及特征周期的影响,提出了通过地基处理实现上部结构减震的方法。
