甲基

The suspension polymerisation reactions of methyl methacrylate and styrene in inorganic/ organic composite ternary system are studied.

采用无机/有机三元复合分散体系进行了甲基丙烯酸甲酯与苯乙烯悬浮聚合的研究，对影响共聚物珠粒形成的因素进行了考察，得到了合成甲基丙烯酸甲酯—苯乙烯共聚物的工艺条件。

As we have knowen that,DNA methylation is associated with transcriptional silencing of tumor suppressors or other genes important for normal cellular function and plays an important role in the development of gastrointestinal tumor.

随着对DNA甲基化的分子机制的进一步认识，以甲基化为基础的标志在临床的应用，尤其是肿瘤的防治，展现了广阔的前景。

Employing CuI(5 mol%), N,N-dimethylglycine hydrochloride(10 mol%) and K_2CO_3(2 equiv.) in refluxing THF as the optimized reaction conditions,the four-membered 4-alkylidene-2-azatidinones could be efficiently synthesized.

当以3-溴-3-N-苯基-丁烯酰胺为底物，在5 mol%CuI为催化剂，10 mol%N，N-二甲基甘氨酸盐酸盐为配体，2当量K_2CO_3作碱，THF回流的反应条件下，可以高效的合成2-亚甲基-4-氮杂环丁酮类化合物。

Thermal reaction of N-methyl-2-pyrrolidinone and carbon disulfide (CS2) under elevated pressure leads to the formation of N-methylprrolidine-2-thione.

N-甲基吡咯烷酮和二硫化碳(CS2)在加压下发生热反应生成N-甲基吡咯烷-2-硫酮。

In this paper, a strain of aerobic microorganisms selected by our laboratory is used as microorganisms,and the bulk culture conditions for the biodegradation of azo dye methyl orange by this mixed bacteria were investigated.

因此本文利用本研究室所筛选的一种混合菌，在好氧条件下研究了其处理偶氮染料甲基橙时，环境温度、pH等条件对其降解甲基橙效果的影响。

MaterialsMethylmethacrylate, ethyl acrylate, acrylic acid and methacrylic acid (all A.R. grades, FirstChemical Reagent Factory, Tianjin, China) were puried bydistillation under reduced pressure and kept in therefrigerator.

物料甲基丙烯酸甲酯，丙烯酸乙酯，丙烯酸和甲基丙烯酸（所有机场铁路等级，第一化工试剂厂，天津，中国）的纯化减压蒸馏和留在refrigerator。

SLC5A8 gene expression level in 42 cases of GCA was detected with RT-PCR method.

采用甲基化特异性PCR法检测42例贲门腺癌及15例癌旁组织SLC5A8基因的甲基化，采用RT-PCR方法检测42例贲门癌组织SLC5A8基因表达水平。

Compound 5 reacted with Grignard reagent of 9 followed by cyclozation to afford target molecule 11. All intermediates and target product were confirmed by IR, 1H NMR and HRMS.

化合物5与9的格氏试剂偶联和关环反应完成目标产物3-羟基－10-去甲基－12-甲氧基－13-甲基罗汉松烷(11)的全合成。

M Trifluoromethylacetophenone was synthesized by the reaction of acetic anhydride with the Grignard reagent of 3 bromo benzene prepared from trifluoromethylbenzene , in 40% overall yield.

以三氟甲基苯为原料，经过溴化、格氏反应后与乙酸酐反应合成间三氟甲基苯乙酮，总收率40%。

MCA coupled with RDA is an effective technique to screen the differentially methylated sequences between MACC and normal colonic tissue.

运用MCA结合RDA分析可以有效分离结肠癌癌旁粘膜与正常结肠组织的差异甲基化DNA片段，为肿瘤等疾病的表遗传研究如DNA甲基化的作用、新抑癌基因的发现提供一个很好的研究方法。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。