OBJECTIVE To study the protective effect of tetramethyl pyrazine (TMP) on cyclophosphamide injured mice. 目的:考察川芎嗪对小鼠环磷酰胺损伤的保护作用。
The results showed that the yield of 1?1 dichlor 1?1?2?2? tetramethyl disilane was rested on the amount of Grignard agent. 结果发现 ,格氏试剂的加入量决定了 1 1 -二氯- 1 2 2 2 -四甲基二硅烷的产率 ;
Octane and para tetramethyl benzene were served as the solvent for dissolving sample and internal standard,respectively. 正辛烷和对四甲基苯分别用作样品的溶剂和内标物,采用内标法定量。
The 2, 2, 6, 6 - tetramethyl - 4 - piperidinol (piperidinol) was synthssized from catalytic hydrogenation of 2, 2, 6, 6 - tetramethyl - 4 - piperidone. 制备了由2，2，6，6-四甲基-4-哌啶酮催化氢化合成受阻胺类光稳定剂中间体2，2，6，6-四甲基-4-哌啶醇。
Methods Tetramethyl rhodamine(TMR) or horseradish peroxidase(HRP)retrograde tracing and biotinylated dextran amine(BDA) anterograde tracing techniques were used. 方法四甲基罗达明(TMR)或辣根过氧化物酶(HRP)逆行追踪和生物素葡聚糖胺(BDA)顺行追踪技术。
Hexagonal mesoporous silica were synthesized in acidic medium by using cetyltrimethylammonium bromide (C16TMABr) as template and tetramethyl orthoslicate (TEOS) as silica source. 本文以十六烷基三甲基溴化铵为模板剂，正硅酸乙酯为硅源，在酸性条件下合成了纯硅六方介孔分子筛。
