丙酮的

The bio-oil was composed of acetic acid, hydroxyacetaldehy, acetol, levoglucosan, furaldehyde, and a small quantity of phenols.

结果表明，热解温度为460~520℃时热解油产率最大，主要有醋酸、羟基乙醛、羟基丙酮、左旋葡聚糖、糠醛，油热值为17.0MJ.kg-1；热解气主要为CO2和CO，还含有少量H2、CH4和C2~C4的烯烃。

The voltammetric behavior of Pb facilitated by dithizone (DzH2) across the water/acetylacetone interface was investigated by cyclic voltammetry.

用循环伏安法研究了双硫腙络合推动Pb2＋在水/乙酰丙酮界面迁移的伏安过程。

Formyl-3-acetyl-4-methyl-5-carbobenzoxypyrrole (6) was synthesized via the selective oxidation of 2,4-dimethyl-3-acetyl-5-carbobenzoxypyrrole (5), which was produced from acetylacetic benzylester (1) via nitrosation, reduction and addition-cyclization with acetylacetone. The total yield of the product was about 34%.

以乙酰乙酸苄酯(1)为原料，经过亚硝化、还原、与乙酰丙酮加成环化生成2， 4-二甲基－3-乙酰基－5-苄氧羰基吡咯(5)，通过选择性氧化反应制得目标化合物2-甲酰基－3-乙酰基－4-甲基－5-苄氧羰基吡咯(6)，反应的总收率约为34%。

The result indicated that the reacting mixture containing dioxane 11.3mL/g HDCA which had been added ethyl chloroformate drop wise should be keep at 10℃ for 30min, then, rising to 15℃ for another 20min in the step of forming mixed anhydride ,and 1.5mol/L NaOH was used to dissolve taurine before aminolysis, and crude product was recrystalled by acetone in purifying process.

结果表明，形成混酐时，二氧六环用量为11.3ml/g HDCA，滴加氯甲酸乙酯后先在10℃反应30min，再在15℃下反应20min；用1.5mol/L的NaOH水溶液溶解牛磺酸后再进行氨解；粗产品用丙酮重结晶。

Caffeic acid tetramers was extracted and separated from acetone water extraction of Arnebia echroma.

目的从新疆软紫草的丙酮水提取物中分离制备了咖啡酸四聚体对照品。

A high performance liquid chromatographymethod was established for the determination of 2-chlorobenzaldehyde and benzalacetone simultaneously.

建立了高效液相色谱同时测定邻氯苯甲醛、苄叉丙酮含量的方法。

A UV\|spectrophotometry method was used to determine the content of brightener benzalacetone in potassium chloride zinc electroplating , and many factors affecting the UV absorption were studied such as pH, inorganic salt, sodium higher fatty alcohol polyoxyethylene sulphate, etc.

研究了酸度、无机盐、高级脂肪醇聚氧乙烯醚硫酸钠等对氯化钾型镀锌主光亮剂苄叉丙酮吸光度的影响。

Benzaldehyde and acetone used as materials,the benzylidene acetone is synthesized in the presence of potassium fluoride on alumina.

以苄叉丙酮为主光亮剂、OP-10为载体光亮剂，并加入适量的辅助光亮剂，复配出Zn-Mn合金电镀添加剂ZM。

Its structure was characterized by FT-IR, 1H NMR and MS. Solubility data of betulin and 3, 28-di-O-glutaryl-betulin in acetone, ethanol, water and phosphate-buffered saline (PBS, pH value 7.4) were determined by equilibrium method.

采用FT-IR、1H NMR和MS对产物进行结构表征，并且选用平衡法测定了桦木醇和桦木醇戊二酸酯在丙酮、无水乙醇、水和磷酸盐缓冲溶液（PBS， pH值7.4，）等不同溶剂中的溶解度。

By means of the constructed ternary phase diagrams of these systems,it is found that the binodal curve of ScCO_2/acetone/CA system is quite close to the polymer/solvent axis.

相图研究结果表明：ScCO_2/丙酮/CA成膜体系的双节线距离聚合物/溶剂轴很近，且在聚合物浓度为25wt。

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。