丙酮的

At last, the effective approach was found that the 024-antibiotic can be purified by freez-dry, methyl alcohol soaking, acetone, chloroform, and methyl alcohol continuously washing, alumina and silica gel column chromatography.

粗提制品的理化性质研究表明，024放线菌所产抗生素为无色晶体，易溶于水，可溶于甲醇和乙醇，且在甲醇中的溶解度较大，不溶或难溶于丙酮、氯仿、正丁醇、乙酸乙酯与苯。

The result indicated that, the optimum parameters of organic solvent extraction pepper oil are acetone to organic solvent, chili powder fineness of 40 meshes, solid-liquid ratio of 1∶6, the extraction time is 40 min.

结果表明，制备辣椒油树脂的最佳工艺条件为：丙酮作有机溶剂，辣椒粉末细度为40目，固液比为1∶6，浸提时间40min；辣椒油树脂提纯辣椒红色素的超临界萃取条件为：萃取釜温度35℃，萃取压力30MPa，时间2.0h。

The performance of copper-coated zeolite was better than that without Cu on the removals of NO and Acetone. The NO removal efficiency was increased as the quantity of Cu on the zeolite was increased.

研究结果发现，以铜进行植入改质后之触媒对於丙酮及NO的去除率明显优於未经处理之HiSiv 3000沸石，且NO的去除率与触媒中Cu之含量成正相关。

The mechanism of co-fluorescence effect has been discussed. In chapter six, the new fluorescence enhancement phenomenon was observed by adding some crown ethers to samarium-thenoyltrifluoroacetone system.

在第六章中，研究发现当向钐-噻吩甲酰三氟丙酮中加入配位能力很强的大环配体冠醚时，冠醚对稀土有机配合物体系产生显著的荧光增强作用，其中冠醚二苯并18冠6后（DB18C6）可使钐-TTA二元配合物体系荧光强度增强280倍。

The PCVD plasma impregnation process of hot forging die includes surface deoiling, polishing, supersonic cleaning in acetone and alcohol dewatering of the die after quenching at 1070 deg.c and tempering at 530 deg.c; plasma nitriding in a industrial PCVD vacuum furnace; and PCVD plating.

本发明公开了一种精密叶片热锻模具的PCVD等离子体渗镀复合强化方法，将经1070℃淬火，530℃回火后的叶片模具(HRC＝43-50)经表面除油、抛光后浸入丙酮中超声波清洗，酒精脱水；然后放入工业型PCVD真空炉内进行等离子体渗氮和PCVD镀膜处理。

With a peak-peak of rectangular asymmetric waveform voltage up to 1 600 V, a frequency of 195.8 kHz, a duty cycle of 30% and a compenstaion voltage of-8.63 V, the acetone displacement is compensated and the sensor ability to separate ions is demonstrated by an experiment using the planar copper drift tube.

当方波非对称射频电压峰峰值为1 600 V，频率为195.8 kHz，占空比为30%，补偿电压为-8.63 V时，采用平板铜块迁移区实现了丙酮离子的位移补偿，实验结果验证了传感器的性能。

These starch acetates exhibited different solubility in water,acetone and DMAc,depending on the DS value.

不同取代度的酰化淀粉在水、丙酮和DMAc等溶剂中表现出不同的溶解性。

Moreover, the other strong adsorbates including〓,〓 etc. have been detected. The main electrooxidation products of isopropanol are acetone and CO〓.

另外，还检测到其它的强烈吸附物种包括：〓，〓〓等；异丙醇主要的电氧化产物是丙酮和CO〓。

Pulp reactions were obvious during 3 days after lased. Alkaline phosphatase examination: After fixed, decalcified and selected, all experimented teeth were stained with the Ca-Co method in order to examine the alkaline phosphatase activity in dental pulp cells.

碱性磷酸酶的检测：实验牙在丙酮中固定1 d，再置入复合酸中脱钙，冰冻切片后，进行钙-钴法染色以显示牙髓细胞中碱性磷酸酶活性，根据米德冷图象分析系统测定切片的灰度值，进行统计学分析。

The conductivity of three rare-earth nitrates: Ce(NO3)3, La(NO3)3 and Y(NO3)3 ,was measured in non-aqueous solvent such as: C2H5 OH、CH3 COCH3、DMF at different temperatures. The use of formula has calculated the molar conductivity of Ce(NO3)3, La(NO3)3 and Y(NO3)3 at 25℃.

研究了不同温度下3种稀土硝酸盐：Ce(NO3)3、La(NO3)3、Y(NO3)3，在非水溶剂中（无水乙醇、丙酮、DMF）的电导性质，并利用公式求得25℃时Ce(NO3)3、La(NO3)3、Y(NO3)3的摩尔电导率。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。