甲醇

The methods of preserving eleostearic acid were studied, adopting content of eleostearic acid as index. Eleostearic acid was esterificated with BF3 in methanol. The content of eleostearic acid was determined by gas chromatography, and the structure is studied by infrared spectroscopy.

初步研究了桐油酸的保存方法，以α-桐油酸含量为指标，将桐油酸与三氟化硼－甲醇溶液进行甲醋化，采用气相色语法检测桐油酸含量，并用红外光语扫描结构。

In the present study, we examined the effect of G. tsugae extract on apoptotic biochemical events in EGFR-overexpressing human epidermoid carcinoma A431 cells.

本论文中，我们证实松杉灵芝甲醇萃取物诱发EGFR过度表现的人类表皮癌A431细胞凋亡可能的路径。

Under ultrasonic extraction, comparing the ratio of total alkaloid with 95% ethanal, hloroform, methanol.

用超声波提取法比较了以95%乙醇、氯仿、甲醇为溶剂的提取率，结果依次为1.21%、1.57%、1.54%。

The main products are as follows: Pharmaceutical Intermediate, Trimethyl Orthoformate , Triethyl Orthoformate, Sodium Methoxide, Power and solution Ethoxide,α-Chloropropionyl Chloride, Acetyl Chloride. Shandong Xinhua Junli Chemical Co.,Ltd.

公司主要产品为医药中间体，原甲酸三甲酯、原甲酸三乙酯、甲醇钠、乙醇钠、α-氯代丙酰氯、乙酰氯，其中原甲酸三甲酯、原甲酸三乙酯是国内唯一采用金属钠法工艺生产的企业。

Natural gas is important chemical material and is used as feed to produce synthesis ammonia,methanol and ethyne .

天然气是化工的重要原料，以天然气为原料生产合成氨、甲醇、乙炔三大产品。

A simple NACE method has been developed for the assay of Rutaecarpine in Evodia rutaecarpa for the first time. Optimum separation of the analytes was obtained using a nonaqueous buffer system with 40 mmol/L ammonium acetate containing 30% acetonitrile and 10% acetate acid.

考察了影响电泳分离的各因素如缓冲溶液的浓度、用于调节酸碱度的乙酸的添加比例及用于调节电渗流的乙腈的添加比例，最后优化的分离缓冲溶液的组成是40 mmol/L NH4Ac 的甲醇溶液，其中含有30%的乙腈和10%的乙酸。

Methanol-to-olefins belonged to high exothermal reaction. The overall reaction heat was within 20~35KJ/mol and the adiabatic temperature rise was more than 200 degree if the feed was only methanol.

如果以纯甲醇进料，总反应热一般在20～35KJ/mol之间，绝热温升在200℃以上，属于强放热反应。

When The degree of hydrolyzation of oyster protein was 16.39%, and the proportion oyster hydrolysate to the sucrose hydrolysate was 100:3, and the reaction moisture and pH and temperature were 75% and 7.5 and 115℃ respectively, the reaction produced appropriate flavor matters, such as 2-furanmethanol which contributed good flavor to the product, while the reaction time was 0.5h. Maillard reaction was able to conceal fishiness effectively.

结果表明，当牡蛎蛋白质的水解度为16.39%，并按100∶3的比例添加砂糖水解液时，在反应物浓度为25%、pH7.5和115℃条件下反应时间0.5h能生成适量的2-呋喃甲醇等风味物质，产生适度的焦香味，达到比较理想腥味掩盖效果。

Due to the flammability of methanol vapor and air and its concentration in a certain range of the explosive mixture, so, how safe and effective storage and use is very important.

由于甲醇的易燃性及其蒸气与空气在一定浓度区间内混合物的爆炸性，因此，如何安全、有效地储存和使用是非常重要的。

Then Br was mixed with silver fluoborate(AgBF4) in methanol and replacement reaction took place.

进而利用Br与AgBF4 在甲醇中发生复分解反应，合成出了四氟硼酸N-乙基吡啶(BF4)。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。