查询词典 methanol

The operation condition of N-methyl glucamine is, columniation temperature is 30℃, detection temperature is 35℃, flow rate is 0.3mL/min, the mobile phase is methanol: water (2% trifluoroacetic acid)=5: 95 .

确定的色谱操作条件为核糖胺：柱温30℃，流速0.7mL/min，检测波长244nm，流动相甲醇：水=40：60；葡甲胺：柱温30℃，检测池温度35℃，流速0.3mL/min，流动相为甲醇：2％三氟乙酸水溶液=5：95。

The HPLC methods for analysis of N--ribitylxylidine and N-methyl glucamine were established. After optimizing the operation conditions, the principal product and main impurities were well separated. And they were determined by LC-MS. The operation condition of N--ribitylxylidine is, columniation temperature is 30℃, flow rate is 0.7mL/min, UV wave is 244nm, the mobile phase is methanol: water=40: 60 .

首次建立了对葡甲胺和核糖胺的高效液相色谱分析方法，通过对色谱操作条件的优化，成功分离了主产物和杂质，在此条件下，应用液相色谱-质谱联用仪对糖基胺及生成杂质进行了指派定性，并测定了两种糖基胺及其主要杂质的含量，获得了满意的结果。

4The obtained solid alkali catalyst was applied to biodiesel preparation with colza oil and used oil as materials respectively and the technics was optimized by sigle-factor and orthogoral experiments with esterification rate as the index. The optimal technique conditions using colza oil were: the amount of solid catalyst 12%, the mol ratio of methanol to oil 9:1, reaction temperature 65℃, reaction time 3h, under which the esterification rate reached to 94.48%.

4以菜籽油和煎炸废油为原料，利用固体碱催化剂催化制备生物柴油，以转化率为考察指标，采用单因素和正交试验对工艺进行优化，得到以菜籽油为原料时制备的最佳工艺参数为固体催化剂投入量2.5％，醇油摩尔比9∶1，反应温度65℃，反应时间3h，转化率达到93.9％；以煎炸废油为原料时最佳工艺参数为反应温度65℃，反应时间3h，固体催化剂投入量4％，醇油摩尔比6∶1，转化率达到91.2％。

There is a growing realization that the only effective way to achieve further reductions in vehicle emissions—short of a massive shift away from the private automobile—is to replace conventional diesel fuel and gasoline with cleaner-burning fuels such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol.

H 人们逐渐认识到，唯一有效的方法来进一步减少车辆尾气的排放量——除了大规模减少私人汽车——替换传统的柴油和汽油，用燃烧得更加清洁的燃料，比如说压缩天然气、液化石油气、乙醇、或者甲醇。

There is a growing realization that the only effective way to achieve further reductions in vehicle emissions --short of a massive shift away from the private automobile--is to replace conventional diesel fuel and gasoline with cleaner--burning fuels such as compressed natural gas, liquefied petroleum gas, ethanol , or methanol .

人们逐渐认识到实现车辆尾气排放更进一步减少的唯一有效方法--大规模削减私人小汽车除外--是用燃烧更洁净的燃料，如压缩天然气、液化石油气、乙醇、甲醇代替传统的柴油和汽油。

There is a growing realization that the only effective way to achieve further reductions in vehicle emissions - short of a massive shift away from the private automobile - is to replace conventional diesel fuel and gasoline with cleaner-burning fuels such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol.

这些清洁燃料包括压缩天然气、液化石油气、乙醇和甲醇。

Existing problems for the application of methanol fuel in China are analyzed,mainly including the toxicity,compatibility with gasoline,corrosiveness,and vaporizability.

提出了我国甲醇汽油在推广应用中存在的问题，主要从毒性、与汽油相溶性、腐蚀性、蒸发性方面进行了分析。

Cottonseed oil and cottonseed meal with good quality could be obtained from cottonseed kernel by a two - phase extraction system which was composed of petroleum ether and methanol.

采用石油醚和甲醇的双液相溶剂浸取棉仁可以得到高质量的棉籽油和棉籽粕，棉仁中的棉酚大部分被甲醇溶解。

Biodiesel was prepared by esterification of cottonseed oil crude fatty acids with methanol and with sulfuric acid as catalyst.

使用浓硫酸催化棉油毛酸与甲醇的酯化反应制备脂肪酸甲酯即生物柴油。

Methyl esters were produced by transesterification of cottonseed oil with methanol in the presence of solid bases as heterogeneous catalyst.

生物柴油可以由棉籽油与甲醇在碱催化剂的作用下通过酯交换反应制得。

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。