搜索结果: 1-3 共查到“NIF”相关记录3条 . 查询时间(0.062 秒)
![](http://www.firstlight.cn/upload/imgfile/20102/24/2010224103038.jpg)
Lasers zap fusion doubts at NIF(图)
Lasers fusion NIF
2010/1/29
Researchers in the US say they have made a crucial breakthrough towards achieving laser fusion and that they expect to generate the conditions for a sustained nuclear reaction by the end of the year. ...
体内遗传标记成团肠杆菌固氮质粒pEA9in vivo Labelling of nif-plasmid pEA9 from Enterobacter agglomerans 339
成团肠杆菌 遗传标记 卡那霉素抗性 质粒消除 同源重组
2007/12/29
用卡那霉素抗性(Kanr)基因对成团肠杆菌固氮质粒pEA9进行活体遗传标记。将来自质粒pEA9的3.0 kb片段(nif ENX)克隆到pBR322载体中,再将卡那霉素抗性(Kanr)基因插入到3.0 kb的片段中,构建成供体质粒pST5。将该质粒转化到含有待标记质粒pEA9的E.a.339菌株中,然后在AP培养基中消除供体质粒,筛选得到40个失去了pST5并保持卡那霉素抗性的克隆,分析表明它们不...