查询词典 methanol

The dynamic characteristics is studied in a fixed bed reactor of inner diameter 1. 56cm, resin packing height 96cm. The effect of mass ratio of methanol to deodorizer distillates, temperature, residence time, and flow rate to conversion of free fatty acids has been studied.

在内径为1.56cm，高度为96cm的树脂床层中考察了固定床连续酯化反应的动态特性，研究了甲醇与脱臭馏出物的配比、反应温度、接触时间和物料流量等因素对脂肪酸转化率的影响。

PartⅡTransform the yeast, screen the excellent expression yeast strain, induce the yeast to express the fusion protein and depurate the target protein. The recombination plasmid was transformed into the yeast GS115 successfully by means of electrotransformation. The excellent yeast strain was got by G418 screening. We achived the yeast supernatant including target protein induced by methanol.

第二部分：酵母的转化、蛋白高表达菌株的筛选、重组蛋白的诱导表达及纯化实验利用电转化的方法，成功地将重组质粒pPIC9k-PTD-hA20导入毕赤酵母GS115，并通过G418浓度梯度筛选得到了蛋白高表达菌株，并对蛋白高表达菌株进行甲醇诱导表达，得到了含有目的蛋白的酵母上清液。

METHODS:Using Dual-wavelength TLC-scanning,the sample was prepared through the column full of D101 macroporous resin with n-butanol extract from the aque ous solution of the granules which had been washed by ether,developer is chloroform-methanol-water(13∶10∶7)(stored at less than 10℃,the lower),detecter is 510nm,reference is 700nm.

双波长薄层扫描法，经乙醚洗涤、正丁醇提取和D101大孔吸附树脂柱层析法制备样品，以氯仿-甲醇-水(13∶7∶2)下层液为展开剂，检测波长为510nm，参比波长为700nm。

The article puts forward the detecting method of using normal butyl alcohol as outer standard substance, using PEG- 20M as fixation phaseand and hydrogen flame detecter, using methanol as solvent, detecting the content of trace MMA from composite material of artificial skull with gas phase chromatography method.

采用氢气焰离子化检测器，以正丁醇为外标物，PEG-20M为固定相，甲醇作为溶剂，气相色谱法测定复合材料人工颅骨中微量MMA的含量。

Medthod: Shim-packC18 column was used with a mobile phase of methanol-phosphate buffer 0~3.5min (10:90),3.51~10min (30:70)gradient elution,velocity of flow: 0.8mL·min-1 ;column temperature: 32℃;volume of injection: 20μL; the wavelength of detecter was set at 254nm.

用岛津Shim-packC18分析柱，甲醇：磷酸缓冲液梯度洗脱，0~3.5min(10：90)，3.5min后(30：70)，流速：0.8mL·min-1，检测波长：254nm，柱温：32℃，进样量：20μL。

By suing methanol to supersede diazomethane which is carcinogenic and easily explosive as the esterifying agent, the method to measure HAAs was improved.

由于采用甲醇为酯化剂，使测定过程更安全，因此本测定方法更适合我国国情，也更利于方法的推广。

The mixed solution is at the proportion of 7 Methanol to 1 Dichloromethane .

其中21、34、56、77这4个家系在S_1和S_2中的平均遗传增益都是最高，最值得关注。

The equilibrium constant for the formation of dimethyl ether from methanol was near 2 and did not change much with the temperature.

甲醇脱水生成二甲醚的平衡常数在2附近，且随温度的变化不大。

Synthesis of dimethyl ether from methanol catalyzed by mixed acid in liquid phase was investigated.

研究了硫酸和磷酸混酸催化甲醇液相合成二甲醚过程。

The conversion of methanol is higher than 98% and the selectivity of dimethylamine is higher than 62% at 320～340 ℃ and 1.8～2.0 MPa.

目前 ，工业上用于甲醇气相氨化制备甲胺的催化剂是具有脱水和氨化作用的酸性催化剂，如γ-Al2 O3、硅酸铝、氧化钍等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。