A gas chromatogram method to detect 3- methylindole content is est ablished.

建立了三甲基吲哚气相色谱含量测定分析方法。

A improved process of p-amino-N,N-dimethylaniline applied caustic soda solution as materials was introduced.

阐述了采用液碱(苛性钠溶液)代替氨水生产对氨基-N,N-二甲基苯胺方法。

Objective:To develop the method for the determination o f 4-methyl imid azole in caramel.

建立4-甲基咪唑快速定量测定方法。

The method of sulfomethylation modification of bayberry tannin extract was investigated.

研究了毛杨梅栲胶磺甲基化改性方法。

Methylheptenone selective hydrogenization to linalool in PEMFC system was anlysed.The application prospect of methylheptenone was also simply introduced.

还介绍了甲基庚烯酮应用前景。

Hydrogen transfer, protonization and formation of methene bridge are probablely the main reasons for the above structural characters.

氢转移、质子化、亚甲基桥形可能是导致这些结构主要原因。

The synthesis methods of double (three chlorine methyl) carbonate by using solvent and nonsolvent method are introduced.

给出了溶剂法和非溶剂法两种合双(三氯甲基)碳酸酯方法。

OBJECTIVE:RP HPLC method for the determination of content of 5 hydroxymethyl furfuraldehyde(5 HMF) in mitoxantrone dextrose injections is reported.

采用HPLC测定盐酸米葡萄糖注射液中5羟甲基糠醛含量。

This article describes property, production and comprehensive manufacturing status of methyl chlorsilane, and the application and market status of derivate.

叙述了甲基氯硅烷性质,生产及综合加工简况,并简介其衍生品应用及市场状况。

Carbasugars,carbocyclic analogues of true sugars,are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene group.

碳环糖是一类呋喃或吡喃糖环中氧原子被亚甲基取代后形糖类似物。

Prosthetic enzyme of mutase, catalyze reactions of group, mainly methyl, metachoresis in the interior of substrate molecule.

变位酶辅酶，催化底物分子内基团(主要为甲基)变位反应。

It has discovered that trace dimethyl glyoxime can sensitivly catalyize the discoloration of dimethyl yelloue by potassium bromate in sulphuric acid.

研究发现，在硫酸介质中，超痕量二甲基乙二醛肟能灵敏地加速溴酸钾氧化二甲基黄褪色指示反应。

Both MSAP (methylation sensitive amplification polymorphism) ratio and full methylation level were the highest in bracteal leaf, and the lowest in tassel.

同一组织在两个自交系中甲基化水平也存在差异。

Two new exocyclic ring-fused boron-dipyrromethene (BDP) dyes with benzo crown ether subunit at meso-position were prepared.Their spectroscopic and electrochemical properties were investigated.

本文报道了两种中位为苯并冠醚亚单元取代含稠合外环硼-二吡咯亚甲基染料合、光谱和电化学性质。

We found that the poly methacrylates prepared by modified microemulsion polymerization have properties of high glass transition temperature (Tg) and rich syndiotacticity.

另外，利用改进微乳液聚合制备聚甲基丙烯酸酯类聚合物一般都有高Tg与富间规度性质。

Cyanopyridine,intermediate of rimifon, was synthesized from 4-picoline using vanadium oxide as a catalyst in a fixed-bed reactor, reached 99% conversion of 4-picoline, 88% selectivity and 87.

以4甲基吡啶为原料,在固定床反应器中通过含氧化钒催化剂发生气固相接触氨氧化反应制备雷米封中间体4氰基吡啶,4甲基吡啶转化率为99%,4氰基吡啶选择性为88%,收率为87。

Dimethyl fumarate, metyl topsin and sodium dehydrogene acetate were used in the antiseptic treatment during storage of Kudzu. The experiment indicated that the effects of metyl topsin was the best.

试用富马酸二甲酯、甲基脱布津、脱氢醋酸钠3种防腐剂对抑制葛根采后霉变情况进行初步研究,结果表明:在所用3种防腐剂中,甲基脱布津防霉效果最好。

To increase the precision of the electric igniting parameters of common fusehead, a kind of wrapper such as NC or CMC,can be used to wrap the bridge wire in common fuse head .

为了提高普通点火头发火参数精度,可以在桥丝上涂覆一层硝化棉或羧甲基纤维素涂层。