排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
GC/MS法追踪摇头丸杂质体系 总被引:1,自引:0,他引:1
本文运用GS/MS的总离子流法,选择离子法,对南京地区常见的几种摇头丸进行全面分析,找出与合成途径相关的痕量杂质,根据杂质情况初步确定其合成途径. 相似文献
2.
de Oliveira T Pybus OG Rambaut A Salemi M Cassol S Ciccozzi M Rezza G Gattinara GC D'Arrigo R Amicosante M Perrin L Colizzi V Perno CF;Benghazi Study Group 《Nature》2006,444(7121):836-837
In 1998, outbreaks of human immunodeficiency virus type 1 (HIV-1) and hepatitis C virus (HCV) infection were reported in children attending Al-Fateh Hospital in Benghazi, Libya. Here we use molecular phylogenetic techniques to analyse new virus sequences from these outbreaks. We find that the HIV-1 and HCV strains were already circulating and prevalent in this hospital and its environs before the arrival in March 1998 of the foreign medical staff (five Bulgarian nurses and a Palestinian doctor) who stand accused of transmitting the HIV strain to the children. 相似文献
1