A series of plate impact experiments on alumina was conducted using a light gas gun in order to further investigate Hugoniot elastic limit(HEL)and failure properties of alumina under shock compression.The velocity int...A series of plate impact experiments on alumina was conducted using a light gas gun in order to further investigate Hugoniot elastic limit(HEL)and failure properties of alumina under shock compression.The velocity interferometer system for any reflector(VISAR)was used to record the rear-free surface velocity histories of the alumina samples.According to the experimental results,the HELs of tested alumina samples with different thicknesses were measured,and the decay phenomenon of elastic wave in shocked alumina was studied.A phenomenological expression between HEL and thickness of sample was presented,and the causes of the decay phenomenon were discussed.The propagation of failure wave in shocked alumina was probed.The velocity and delayed time of failure wave propagation were obtained.The physical mechanism of the generation and propagation of failure was further discussed.展开更多
目的系统评价体外膜肺氧合治疗患者的生活体验和需求,为提高患者的生活质量提供参考。方法检索PubMed、Embase、Web of Science、Cochrane Library、Scopus、CINAHL、ProQuest、ScienceDirect、中国知网、万方数据知识服务平台、维普网...目的系统评价体外膜肺氧合治疗患者的生活体验和需求,为提高患者的生活质量提供参考。方法检索PubMed、Embase、Web of Science、Cochrane Library、Scopus、CINAHL、ProQuest、ScienceDirect、中国知网、万方数据知识服务平台、维普网、中国生物医学文献数据库,收集从建库至2024年3月收录的关于体外膜肺氧合治疗患者生活体验及需求的质性研究。依据JBI质性研究质量评价标准评价文献质量,原始研究结果采用Meta整合法进行整合。结果共纳入9篇文献,提取42个主题,归纳为8个类别,最终形成3个整合结果:体外膜肺氧合治疗会改变生活,但值得选择;积极调适,重塑生活;回归正常生活的需求。结论体外膜肺氧合治疗会改变患者的身心状态,应完善患者的社会支持网络,并针对性地提供延续性康复医疗服务和护理,协助其尽早回归正常生活。展开更多
基金supported by the Science and Technology Development Foundation of China Academy of Engineering Physics (Grant No. 2014B0101009)the National Natural Science Foundation of China (Grant No. 11502258, 11272300)
文摘A series of plate impact experiments on alumina was conducted using a light gas gun in order to further investigate Hugoniot elastic limit(HEL)and failure properties of alumina under shock compression.The velocity interferometer system for any reflector(VISAR)was used to record the rear-free surface velocity histories of the alumina samples.According to the experimental results,the HELs of tested alumina samples with different thicknesses were measured,and the decay phenomenon of elastic wave in shocked alumina was studied.A phenomenological expression between HEL and thickness of sample was presented,and the causes of the decay phenomenon were discussed.The propagation of failure wave in shocked alumina was probed.The velocity and delayed time of failure wave propagation were obtained.The physical mechanism of the generation and propagation of failure was further discussed.
文摘目的系统评价体外膜肺氧合治疗患者的生活体验和需求,为提高患者的生活质量提供参考。方法检索PubMed、Embase、Web of Science、Cochrane Library、Scopus、CINAHL、ProQuest、ScienceDirect、中国知网、万方数据知识服务平台、维普网、中国生物医学文献数据库,收集从建库至2024年3月收录的关于体外膜肺氧合治疗患者生活体验及需求的质性研究。依据JBI质性研究质量评价标准评价文献质量,原始研究结果采用Meta整合法进行整合。结果共纳入9篇文献,提取42个主题,归纳为8个类别,最终形成3个整合结果:体外膜肺氧合治疗会改变生活,但值得选择;积极调适,重塑生活;回归正常生活的需求。结论体外膜肺氧合治疗会改变患者的身心状态,应完善患者的社会支持网络,并针对性地提供延续性康复医疗服务和护理,协助其尽早回归正常生活。
