查询词典 CO2

Few minutes are enough to chemisorb significant amount of H2O and CO2.It is demonstrated that the CO2 is the main deactivating agent whereas the negative effect water is less important.

化学吸收大量的这表明了CO2对催化活性降解起主要作用，而水的影响相对不太重要。

CO2 emission rate higher in the heavily degraded alpine meadow than in the moderately degraded alpine meadow during the plant growing seasons.Ruderal is the dominant species and poison grass is secondary in heavily degraded meadow and Grass or Cyperaceae is only a few.

不同退化程度原状草地CO2通量季节变化五种原状草地CO2释放速率具有明显的季节动态，其变化趋势基本一致，且均表现为正排放。

CO2 pneumoperitoneum had a minor impact on the peritoneal growth and spread of ovarian cancer,when compared with midline laparotomy and He pneumoperitoneum.Further experiments are required to demonstrate the advantage of gasless laparoscopy over CO2 laparoscopy.

同开腹手术、He气腹相比，CO2气腹对卵巢癌腹腔内生长和扩散的影响极其微小，而免气腹腹腔镜手术的优越性也有待于进一步的实验证实。

ConclusionMicrowave extraction has the highest yield in the shortest time. But volatile oil in Heracleum hemsleyanum Diels extracted by supercritical CO2 extraction or steam distillation has better quality.

结论微波萃取挥发油得率最高，时间最短；超临界CO2和水蒸馏法萃取挥发油的质量最好，因此使用超临界CO2是萃取牛尾独活挥发油的最佳途径。

ConclusionThe extraction rate of volatile oils from Heracleum hemsleyanum Diels by supercritical CO2extraction process is higher than that of water vapor distillation,and the optimized extraction conditions are:extraction pressure 25MPa,extraction temperature 45℃ and flow rate of CO2 20L/h, and the yield of volatile oils is 0.65%.

超临界CO2萃取牛尾独活挥发油的萃取率较水蒸气蒸馏法高，最佳萃取条件为萃取压力25MPa，萃取温度45℃，CO2流量20L/h，挥发油收率为0.65%。

In the synthesis of canthaxanthin by selective catalylitic oxidating of βcarotene,CO2 was used as acidifying or alkalizing agent,which controlled reacting system acidity and protected polyene.,producing less by-products and increasing catalylitic oxidation selectivity.In the addition reaction of isoprene with hypochloric acid,1-chloro-2-methyl-3-buten-2-ol and l-chloro-2-methyl-3-buten-4-ol were made by controlling of the acidity with carbon dioxide i...

CO2作为酸碱调节剂和惰性气体，在β-胡萝卜素催化氧化合成角黄素反应中，可以控制反应体系酸性，保护原料中的双键，减少副反应发生，提高催化氧化反应的选择性；异戊二烯氯醇化生成1-氯-2-甲基-3-丁烯-2-醇和1-氯-2-甲基-3-丁唏-4-醇反应中，CO2代替有机酸作酸碱调节剂，控制次氯酸的生成速度，达到调控反应的目的，反应条件温和，不副产固体。

The optimal technological parameters of oil extraction from Kosteletzkya virginica seeds by supercritical CO2 fluid extraction technology should be as follows: extraction pressure 25MPa, extraction ...

结果表明超临界CO2流体萃取技术提取海滨锦葵籽油的最佳工艺参数为：萃取压力25MPa，萃取温度45℃，CO2流量18kg.h-1，萃取时间为120min，在该工艺条件下萃取三次，海滨锦葵籽油萃取率达到19.35%。

ObjectiveTo study the optimal technology of supercritical- CO2 fluid extraction(SFE-CO2) for Litsea cubeba Lour.

目的筛选超临界CO2 流体萃取荜澄茄挥发性成分的最佳工艺，并研究萃取物的药效。

ObjectiveTo study the optimal technology of supercritical- CO2 fluid extraction(SFE-CO2) for Litsea cubeba Lour.

作者：王姿媛，何泽民，姜笑寒目的筛选超临界CO2 流体萃取荜澄茄挥发性成分的最佳工艺，并研究萃取物的药效

Moringa oleifear seed oil was extracted by supercritical fluid-CO2 (SCF-CO2) and its constituents were analyzed by GC-MS.

研究了超临界CO2流体萃取辣木籽油的工艺条件并对其化学成分进行了分析。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。