His group began working to develop agents to target hydroxyapatite six years ago , but efforts were stalled by the inability to manufacture large quantities of the agent 他的研究组在6年前就开始寻找这个显示羟磷灰石的试剂了,但是由于没有能力大量制造此造影剂而被迫停止。
If scientists can develop agents that offer the benefits of 2dg without its drawbacks , they will finally enable people to have their cake ? a longer , healthier life ? and eat it , too 科学家要是可以发展出只有2dg的好处而没有它的坏处的药物,终将让人们在饱餐之后,还能有更长、更健康的生命。
According to the chemical characteristics of organophosphorus pesticide and the principle of organophosphorus pesticide inhibit plants cholinesterase activity , based on determined enzymatic reaction conditions , the separation effect of different developing agent system on 11 organophosphorus pesticides by the means of thin - layer chromatography were researched , followed 10 qualitative analysis methods of organophosphorus pesticide residues were established 摘要根据有机磷农药化学特性及其对植物胆碱酯酶抑制的原理,在确定酶促反应条件的基础上,考察了不同展开体系对11种有机磷农药的薄层层析分离效果,建立了10种有机磷农药残留的定性分析方法。