查询词典 methanol

According to the frequently used methods of extraction and isolation of natural products from organic body, the freeze-dried ascidian body was exhaustively extracted with methanol/toluene ( 3 : 1 ) and then the combined extracts were filtered and the solvent was separatelyconcentrated under vacuum.

按照目前比较常用的天然产物提取分离方法，将样品冷冻干燥后，用甲醇：甲苯(3：1)浸泡，收集滤液，减压蒸馏得到的浓缩液用NaNO_3水溶液萃取，收集水相，减压浓缩至NaNO_3晶体析出。

To study the expression, purification and bioactivity of human augmenter of liver regeneration in Pichia Pastoris, the expression plasmid pPICZαA- ALR was constructed and transformed into P. Pastoris by the method of electroporation transformation. Induced with 0.5% methanol, the 30 kD protein in the culture supernatant of recombinant P. Pastoris was confirmed to be rhALR by SDS-PAGE and Western blot. Quantitative analysis showed that the target protein was in a level of 66% of the total protein of the culture supernatant, with a yield of 40mg/L.we had performed DEAE anion exchange chromatography two times with excessive and regular adsorption quantity consecutively, and then the rhALR above 95% purity and 52% protein recovery could be obtained by G75 molecular sieve chromatography at last step. The bioactivity assay of the purified product showed that rhALR could stimulate the proliferation of HepG2, SMMC-7721 and NIH-3T3 in vitro.

为在毕赤酵母中分泌表达人肝再生增强因子，以色谱法分离纯化后进行体外活性研究，构建表达载体pPICZαA- ALR，经电穿孔转入毕赤酵母中，用0.5％甲醇诱导表达；重组酵母培养上清经SDS-PAGE电泳和western blot鉴定后表明， rhALR以分子量为30kD的二聚体为主；定量分析结果表明，重组酵母培养上清中rhALR约占总蛋白的66％，表达量约为40mg/L；经DEAE柱和G75柱纯化后，获得的rhALR纯度大于95％，得率为52％；体外生物学活性实验表明，rhALR能明显促进HepG2、SMMC-7721和NIH-3T3细胞的增殖。

Methanol ; Diesel Fuel ; Combustion ; Optical Measurement ; Optical Radiation ; Autoignition ; Flame Propagation ; Diesel Engine

甲醇；柴油；燃烧；光学测量；光辐射；自燃；火焰传播；柴油机

It was used to simulate the catalytic distillation column of methyl acetate and methanol azeotrope hydrolysis combined with the macro-dynamic equation of methyl acetate hydrolysis.

应用该方法结合实验测定的醋酸甲酯催化水解动力学数据对醋酸甲酯与甲醇共沸物催化精馏水解小试过程进行了模拟计算，得到了满意的结果。

Based on the success of the industrialization of the process of catalytic distillation of methyl acetate hydrolysis, the new process of catalytic distillation of methyl acetate and methanol azeotrope hydrolysis and related fundamental research were studied. These can make further improvement on the process in order to simplify the process and reduce the energy-consumed of the recovery system. In addition, theoretical system of the simulation and design the catalytic distillation process were established, which can provide the basis of the pilot plant and industrialization in the future.

本文在催化精馏水解工艺工业化成功的基础上，进行了醋酸甲酯和甲醇共沸物催化精馏水解新工艺及其相关基础研究，以进一步改进工艺，达到简化流程及节能降耗的目的，同时建立起催化精馏过程模拟和设计的理论体系，为中试及将来的工业化打下了坚实的基础。

Results shown, when extract quantity from pressure column was more than the methanol quantity of the feedings, the content of ethanol extracted had no relationship with reflux ratio, but had relationship with water-ethanol azeotrope.

结果表明，当常压塔采出量大于进料中甲醇的量时，采出物中乙醇的含量与回流比无关，而与水－乙醇共沸物有关。

Based on the success of the industrialization of the process of catalytic distillation of methyl acetate hydrolysis, the new process of catalytic distillation of methyl acetate and methanol azeotrope hydrolysis and related fundamental research were studied.

本文在催化精馏水解工艺工业化成功的基础上，进行了醋酸甲酯和甲醇共沸物催化精馏水解新工艺及其相关基础研究，以进一步改进工艺，达到简化流程及节能降耗的目的，同时建立起催化精馏过程模拟和设计的理论体系，为中试及将来的工业化打下了坚实的基础。

In the end, the extractive distillation method was applied to separate and purify the binary azeotrope mixture, methanol-dimethyl carbonate. The isoamyl acetate was used as extractant and the two tower system was introduced to continuous extractive distillation operation. The results show a better separation effect.

最后采用萃取精馏的方法，对甲醇-碳酸二甲酯的二元共沸混合物进行了分离提纯研究，以毒性较低的乙酸异戊酯为萃取剂，采用两塔连续萃取精馏操作，结果表明，分离效果比较理想。

Meanwhile, experiment with the ternary mixture of methanol, butyl methyl ether and 1-chlorobytane showed that the system was not ternary azeotrope and can be separated by combination of extractive and rectification using water as extractive solvent.

针对甲醇、甲基正丁醚和正氯丁烷三元混合物，研究了该物系的性质，得到该物系不是三元共沸物的结论，并用水作萃取剂，通过实验验证了利用萃取和精馏耦合的方法分离该物系的可行性。

From the methanol-sewage sludge-enrichment culture one methanosarcina, two vibrios and one bacteroid have been isolated.

经对该富集培养物的分离培养，已分离出4株厌氧细菌，其中一株为甲烷八叠球菌，两株为弧菌，一株为杆菌。

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。