甲基

Trimethylolheptane was synthesized through consecutive aldol condensation and Cannizzaro reaction of octylaldehyde and formaldehyde, using sodium hydroxide as catalyst.

为制备新型芳香缓释聚氨酯微胶囊合成了两亲性单体三羟甲基庚烷。以氢氧化钠为催化剂，辛醛和甲醛在较低温度下发生羟醛缩合反应生成2，2-二羟甲基辛醛。

The initial pH of reaction solution had little influence to the degradationefficiency, but in alkali solution, methylene blue degraded easier than in acid or neutral solution.

亚甲基蓝降解率随超声时间的增加而增加；溶液的pH值的变化对亚甲基蓝降解的影响不大，但是在中性溶液中，其降解率稍高于酸性或碱性溶液中。

In this experiment, we associated themethylation-sensitive single-strand conformation polymorphism analysis withlaser-induced fluorescence capillary electrophoresis to set up a new method which isfast separation, high sensitivity, and automated for detection of DNA methylation.

本研究通过甲基化敏感的单链构象分析法与毛细管电泳技术相结合建立一种高效、灵敏、自动化的DNA甲基化检测方法。

The products include antioxidants,blowing agents,organic solvents, intermediates for pesticides,drugs and dyestuffs,perfumes,water glass,silicates,molybdenum compounds,graphite series,activated carbon,plasticizers,flame retardant,heat stabilizers,food additives and chemical reagents,etc.

注册商标有&鹿牌&合成樟脑，&桃浦&牌合成樟脑副产物和其他化工产品，&金牛&牌抗氧剂，发泡剂，水合肼，二甲基乙酰胺，二甲基乙醇胺，&海球&牌硅胶系列，&飞铃&牌磷氯，双乙烯酮衍生物，磷酸酯，乙烯利等，&泉字&牌，&水晶&牌各类泡化碱系列，&上胶&牌钼类化合物，石墨类产品系列。

Ferric chloride catalyzed direct conversion of carbonyl compounds to the corresponding chloride with silicon hydride ( dichloromethylsilane , chlorodiphenylsilane or trichlorosilane) was realized.

在甲基二氯硅烷作用下，FeCl3能催化羰基化合物的还原氯代反应，得到相应的氯代产物；在甲基二氯硅烷、PBr3或NaI作用下，FeCl3可以催化羰基化合物的还原溴代或碘代反应，分别以良好的收率得到相应的溴代烷或碘代烷

Comb-shaped polycarboxylic -type superplasticizers were synthesized with acrylic acid,mathacrylic acid,sodium allylsulphonateand methoxypolymethacrylatethrough aqueous copolymerization initiated by ammonium persulfate.

将甲氧基聚氧乙烯醚单甲基丙烯酸酯、丙烯酸、甲基丙烯酸和烯丙基磺酸钠进行水溶液共聚，合成了具有梳型结构的聚羧酸系高效减水剂。

The female sex pheromone of the banded cucumber beetle,-6,12-dimethyl pentadecan-2-one, was obtained in 19.8% overall yield through 17 steps, using-4-methylvalerolactone as the starting material.

以-4-甲基戊内酯为原料，经过最长线性步骤17步，以19.8%的总收率合成了蔬菜害虫Diabrotica balteata LeConte的雌性信息素的主要成分(6R，12R)-6，12-二甲基-2-十五酮。

Eighty SD rats were randomly divided into four groups: acute spinal cord injury groups ( SCI groups, n=20);administration of Ulinastatin (U groups, n=20), use Ulinastatin after SCI at half an- and 4- and 8- and 24- and 48- hour.;administration of Methylprednisolone (M groups, n=20), use Ulinastatin after SCI at half an- and 4- and 8- and 24- and 48- hour; administration of Ulinastatin and Methylprednisolone(M+U groups, n=20), use Ulinastatin and Methylprednisolone after SCI at half an- and 4- and 8- and 24- and 48- hour;Allen's weight drop model of acute spinal cord injury was prepared.

本课题利用Allen重物打击模型，选用SD大鼠80只，随机分为四组：脊髓损伤组(SCI组，n=20)；使用乌司他丁组(乌组，n=20)；使用甲基强的松龙组(甲组，n=20)；乌司他丁+甲基强的松龙联合用药组(乌+甲组，n=20)，所有给药组在脊髓损伤后(半小时、4小时、8小时、24小时、48小时)给药。

For better understanding, there is a drug known as ICE that can interfere with the capacity of the body to channel the nonphysical.

为了让你更好理解，，有一种叫做冰毒的毒品（译注：冰毒，学名甲基苯丙胺、去氧麻黄素或甲基安非它命，因为是透明晶体，因此俗称为&冰&。

Synthesis 3,5-dihydroxytoluene by ethyl acetoacetate and diketene as material(yield 6%),by 3-methyl-4-chlorophenol and KOH as material(yield 30-40%)respectively,It was solved for product separation and purify.

分别以乙酰乙酸乙酯与双乙烯酮为原料(收率6%)、3-甲基-4-氯苯酚与氢氧化钾为原料(收率30-40%)合成了3，5-二羟基甲苯，解决了产品分离纯化问题。3-甲基-4-氯苯酚路线进行了中试，中试收率为20%。

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。