Applying calculation method in alloy design should be an important tendency due to its characters of inexpensive cost, high efficiency and prediction. DOS calculations of AuSn, AsSn and SbSn Sn- based alloys have ...Applying calculation method in alloy design should be an important tendency due to its characters of inexpensive cost, high efficiency and prediction. DOS calculations of AuSn, AsSn and SbSn Sn- based alloys have been investigated by employing DV - Xa method, in which different cluster models were adopted to calculate electron structure.It is proved that some regulations must be taken into ac- count in order to carry out alloy design calculation successfully,which are described in this paper in detail.展开更多
目的:对脑卒中病人症状群的研究进行范围综述,以确定其症状群的特点及研究现状,为今后症状群研究提供指导。方法:依据范围综述方法学框架,计算机检索PubMed、EMbase、CINAHL、Web of Science、the Cochrane Library、中国知网、维普数...目的:对脑卒中病人症状群的研究进行范围综述,以确定其症状群的特点及研究现状,为今后症状群研究提供指导。方法:依据范围综述方法学框架,计算机检索PubMed、EMbase、CINAHL、Web of Science、the Cochrane Library、中国知网、维普数据库、万方数据库和中国生物医学文献服务系统中关于脑卒中病人症状群的相关研究。检索时限从建库至2024年5月10日。对纳入文献进行数据提取及汇总分析。结果:最终纳入15篇文献,共提取14个症状群,居前3位的症状群分别是心理、躯体活动障碍和疲乏相关症状群。症状群评估工具包括单一症状评估量表和多症状评估量表;性别、年龄、文化程度、发病次数、脑卒中类型等可能是其症状群的影响因素。结论:脑卒中病人存在多种类型症状群,未来研究应进一步检查症状群内部一致性,开发脑卒中病人特异性症状群评估工具,构建精准化症状群管理方案。展开更多
文摘Applying calculation method in alloy design should be an important tendency due to its characters of inexpensive cost, high efficiency and prediction. DOS calculations of AuSn, AsSn and SbSn Sn- based alloys have been investigated by employing DV - Xa method, in which different cluster models were adopted to calculate electron structure.It is proved that some regulations must be taken into ac- count in order to carry out alloy design calculation successfully,which are described in this paper in detail.
文摘目的:对脑卒中病人症状群的研究进行范围综述,以确定其症状群的特点及研究现状,为今后症状群研究提供指导。方法:依据范围综述方法学框架,计算机检索PubMed、EMbase、CINAHL、Web of Science、the Cochrane Library、中国知网、维普数据库、万方数据库和中国生物医学文献服务系统中关于脑卒中病人症状群的相关研究。检索时限从建库至2024年5月10日。对纳入文献进行数据提取及汇总分析。结果:最终纳入15篇文献,共提取14个症状群,居前3位的症状群分别是心理、躯体活动障碍和疲乏相关症状群。症状群评估工具包括单一症状评估量表和多症状评估量表;性别、年龄、文化程度、发病次数、脑卒中类型等可能是其症状群的影响因素。结论:脑卒中病人存在多种类型症状群,未来研究应进一步检查症状群内部一致性,开发脑卒中病人特异性症状群评估工具,构建精准化症状群管理方案。