甲醇

In addition, a further study was made of the technique of extraction, isolation and purification of GLA. The factional extraction used in the laboratory with n-hexane and ethanol was changed into the whole extraction of 6〓 solvent, which simplified production technique and reduced cost of production. The fungal lipid extracted from the fermentation in the medium-scale test was concentrated by the urea adducting method with methanol as solvent, at 75～80℃ for 3 hours. After GLA had been adducted twice, the content of GLA came up to 84. 25%, around a twelfth as much as the original concentration.

并对γ—亚麻酸的提取和分离纯化工艺进行了研究，将实验室中用正己烷和乙醇分步抽提的工艺改为用6〓溶剂一步抽提技术，从而简化了生产工艺，降低了生产成本；采用脲素包合法，以甲醇作为溶剂，温度控制在75～80℃，包合时间为3h，对中试发酵所提取的菌油进行了浓缩，γ—亚麻酸两次包合后，GLA含量达到84.25%，比原浓度浓缩了近十二倍。

It is found that CH3OH adsorbs on PANI-Fc electrode before its electrocatalytic oxidation and the methanol oxidation can start at 2M CH3OH.

研究发现，在 CH3OH 的电催化氧化之前，它首先吸附在电极表面上，甲醇氧化的起始浓度为 2M。

The agglomerates of Pt nanoparticles have also been found to exhibit significant electrocatalytic activity for the oxidation of methanol.

研究还发现团聚态的Pt纳米粒子对甲醇氧化具有较好电催化特性。

Methods The internal standard was diazepam, the samples were extracted by ethyl acetate after basified the plasma., the column was Hypersil C18, and the mobile phase mixed of methanol: water(75:25) containing 0.03%-triethylamine.

色谱柱为Hypersil ODS C18 4.0mm×250mm，流动相为含0.03%三乙胺的甲醇：水（75：25），流速1.0ml/min，紫外276nm波长检测。

The optimum technical parameters were obtained as follows:bromating temperature is 15℃,solvent is methyl arcohol, bromating agent is BrCl,the molar ratio of 4-hydroxy-benzaldehyde to BrCl is 1:1.15,reaction time is 2.5 hours.

其工艺参数优化如下：溴化时反应温度选择15℃，溶剂选择甲醇+乙酸甲酯，溴化剂选择氯化溴，对羟基苯甲醛与氯化溴之比为1∶1.15，反应时间选择2.5个小时，滴溴时间约半个小时。

The mechanism of methanol carbonylation catalyzed by a chelated square planar carbonyl rhodium complex was studied.

报道了螯合型正方平面羰基铑配合物催化甲醇羰基化反应的机理研究。

With the assumption that the electrostatic field strength of met a l chelates can be measured by the ratio of electronegativity vs.

在C18柱上试验以各种有机溶剂洗脱金属螯合物，最终选择了甲醇-丙酮的非水体系作流动相。

Bone samples in the chloroform-methanol group were defatted using chloroform-methanol (1:1) at 37 ℃ for 24 hours.

氯仿/甲醇脱脂组采用1：1甲醛/氯仿37 ℃，浸泡24 h脱脂。

The samples of test group were defatted in 500 mL chloroform and methanol mixture (1: 1) for 24 hours, while control samples were immerged in deionized water for 24 hours.

实验组试件在 1∶1的三氯甲烷：甲醇混合液500 mL中脱脂24 h；对照组标本按同样流程在去离子水中浸泡24 h。

RESULTS: The defatted effect of supercritical CO2 fluid was similar to chloroform-methanol, but both of them were superior to ethylether.

结果：结果超临界CO2和氯仿/甲醇脱脂效果相似，均显著较乙醚脱脂效果好。

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。