目的探索一种适合围产期35周~37周孕妇B族链球菌(group B Streptococcus,GBS)高效分离、鉴别的筛查培养基。方法参照美国CDC推荐使用的特殊GBS培养基配方配制(倍可特B族链球菌鉴别培养基Granada Medium,GM),用GM、梅里埃B族链球菌筛查...目的探索一种适合围产期35周~37周孕妇B族链球菌(group B Streptococcus,GBS)高效分离、鉴别的筛查培养基。方法参照美国CDC推荐使用的特殊GBS培养基配方配制(倍可特B族链球菌鉴别培养基Granada Medium,GM),用GM、梅里埃B族链球菌筛查培养基(STRB)和哥伦比亚血琼脂(BA)3种培养基对373份围产期孕妇阴道/肛门拭子进行B族链球菌的筛查。采用质谱分析仪鉴定分离菌株,对3种培养基进行敏感度和特异性的比较。结果在围产期孕妇阴道/肛门拭子B族链球菌筛查中,GM、STRB和BA的敏感度分别为100.00%、72.73%和36.36%,特异度分别为100.00%、96.76%和98.24%。结论 GM是围产期35周~37周孕妇阴道/肛门拭子中B族链球菌筛查分离的一种快捷、高效的方法。展开更多
The problem of wave propagation in a heterogeneous medimn, ineluding calculations of near-field seismograms and interacion of waves with man-made structures ornatural structures, etc, is an important problem in seismo...The problem of wave propagation in a heterogeneous medimn, ineluding calculations of near-field seismograms and interacion of waves with man-made structures ornatural structures, etc, is an important problem in seismology and earthquake engineering. Interest in applying discrete methods to this problem has been greatly growing and a number of schemes of the treatment of the artificial boundaries of a finite computational rogion have been proposed over the last few years. By grouping and comparing most of the schemes, it is shown that if we seek a boundary condition suitable展开更多
文摘目的探索一种适合围产期35周~37周孕妇B族链球菌(group B Streptococcus,GBS)高效分离、鉴别的筛查培养基。方法参照美国CDC推荐使用的特殊GBS培养基配方配制(倍可特B族链球菌鉴别培养基Granada Medium,GM),用GM、梅里埃B族链球菌筛查培养基(STRB)和哥伦比亚血琼脂(BA)3种培养基对373份围产期孕妇阴道/肛门拭子进行B族链球菌的筛查。采用质谱分析仪鉴定分离菌株,对3种培养基进行敏感度和特异性的比较。结果在围产期孕妇阴道/肛门拭子B族链球菌筛查中,GM、STRB和BA的敏感度分别为100.00%、72.73%和36.36%,特异度分别为100.00%、96.76%和98.24%。结论 GM是围产期35周~37周孕妇阴道/肛门拭子中B族链球菌筛查分离的一种快捷、高效的方法。
文摘The problem of wave propagation in a heterogeneous medimn, ineluding calculations of near-field seismograms and interacion of waves with man-made structures ornatural structures, etc, is an important problem in seismology and earthquake engineering. Interest in applying discrete methods to this problem has been greatly growing and a number of schemes of the treatment of the artificial boundaries of a finite computational rogion have been proposed over the last few years. By grouping and comparing most of the schemes, it is shown that if we seek a boundary condition suitable
