Irradiation makes structural materials of nuclear reactors degraded and failed.However,the damage process of materials induced by irradiation is not fully elucidated,mostly because the charged particles only bombarded...Irradiation makes structural materials of nuclear reactors degraded and failed.However,the damage process of materials induced by irradiation is not fully elucidated,mostly because the charged particles only bombarded the surface of the materials(within a few microns).In this work,we investigated the effects of surface irradiation on the indirect irradiation region of the(Al0.3Cr0.2Fe0.2Ni0.3)3O4 high entropy oxide(HEO)films in detail by plasma surface interaction.The results show that the damage induced by surface irradiation significantly extends to the indirect irradiation region of HEO film where the helium bubbles,dislocations,phase transformation,and the nickel oxide segregation were observed.展开更多
电容式电压互感器作为一次电压监测设备,其性能直接影响着二次电压的准确采集和继电保护的正常工作。首先介绍了电容式电压互感器的典型结构,并针对一起220 k V母线电容式电压互感器二次电压异常故障的处理过程进行了详细介绍,最终解体...电容式电压互感器作为一次电压监测设备,其性能直接影响着二次电压的准确采集和继电保护的正常工作。首先介绍了电容式电压互感器的典型结构,并针对一起220 k V母线电容式电压互感器二次电压异常故障的处理过程进行了详细介绍,最终解体发现由于电容式电压互感器电磁单元一次线圈的短路烧蚀造成了这起故障。最后对预防此类故障的发生提出了相关建议。展开更多
目的 探讨区域协同急救网络在急性心肌梗(AMI)救治中的应用价值。方法 回顾性分析84例AMI急诊患者临床资料,将区域协同急救网络建立前的患者设置为对照组(42例,接受常规急救救治),将区域协同急救网络建立后的患者设置为研究组(42例,接...目的 探讨区域协同急救网络在急性心肌梗(AMI)救治中的应用价值。方法 回顾性分析84例AMI急诊患者临床资料,将区域协同急救网络建立前的患者设置为对照组(42例,接受常规急救救治),将区域协同急救网络建立后的患者设置为研究组(42例,接受区域协同急救网络救治);对比两组发病后至首次医疗接触(SO to FMC)、病情诊断准确率、门球时间(D to B)、FMC至球囊扩张(FMC to B)、来院方式、救治后7 d的Killip分级、发病至球囊扩张(S to B)、并发症及救治结局。结果 研究组SO to FMC、S to B、D to B、FMC to B时间均短于对照组,病情诊断准确率、自行来院率高于对照组,救治后7 d的Killip分级低于对照组,总并发症发生率低于对照组(均P <0.05);两组死亡率差异无统计学意义(P> 0.05)。结论 区域协同急救网络可缩短AMI救治时间,降低患者心血管并发症,提高患者预后质量。展开更多
基金National Key Research and Development Program of China(Grant No.2017YFB0405702)the National Natural Science Foundation of China(Grant No.11775150).
文摘Irradiation makes structural materials of nuclear reactors degraded and failed.However,the damage process of materials induced by irradiation is not fully elucidated,mostly because the charged particles only bombarded the surface of the materials(within a few microns).In this work,we investigated the effects of surface irradiation on the indirect irradiation region of the(Al0.3Cr0.2Fe0.2Ni0.3)3O4 high entropy oxide(HEO)films in detail by plasma surface interaction.The results show that the damage induced by surface irradiation significantly extends to the indirect irradiation region of HEO film where the helium bubbles,dislocations,phase transformation,and the nickel oxide segregation were observed.
文摘电容式电压互感器作为一次电压监测设备,其性能直接影响着二次电压的准确采集和继电保护的正常工作。首先介绍了电容式电压互感器的典型结构,并针对一起220 k V母线电容式电压互感器二次电压异常故障的处理过程进行了详细介绍,最终解体发现由于电容式电压互感器电磁单元一次线圈的短路烧蚀造成了这起故障。最后对预防此类故障的发生提出了相关建议。
文摘目的 探讨区域协同急救网络在急性心肌梗(AMI)救治中的应用价值。方法 回顾性分析84例AMI急诊患者临床资料,将区域协同急救网络建立前的患者设置为对照组(42例,接受常规急救救治),将区域协同急救网络建立后的患者设置为研究组(42例,接受区域协同急救网络救治);对比两组发病后至首次医疗接触(SO to FMC)、病情诊断准确率、门球时间(D to B)、FMC至球囊扩张(FMC to B)、来院方式、救治后7 d的Killip分级、发病至球囊扩张(S to B)、并发症及救治结局。结果 研究组SO to FMC、S to B、D to B、FMC to B时间均短于对照组,病情诊断准确率、自行来院率高于对照组,救治后7 d的Killip分级低于对照组,总并发症发生率低于对照组(均P <0.05);两组死亡率差异无统计学意义(P> 0.05)。结论 区域协同急救网络可缩短AMI救治时间,降低患者心血管并发症,提高患者预后质量。
