丙酮的

Aiming at the shortcomings of high formaldehyde content and low soaping and crocking fastnesses of currently used pigment printing binder,by60Co-γ radiation polymerization process,the waterborne polyacrylate emulsion containing active keto groups was synthesized from acrylate monomers and diacetone acrylamide.

针对目前所用涂料印花黏合剂存在的色牢度低和甲醛含量高的缺陷，采用钴60-γ辐射法聚合工艺，利用丙烯酸酯单体、双丙酮丙烯酰胺合成出含活性酮羰基的丙烯酸酯乳液；然后同含端酰肼基聚氨酯乳液按一定的比例混合，制备出酮肼交联型丙烯酸酯聚氨酯复合乳液。

Result: The stability obtained from alcohol, acetone, ether, ethyl ether all improved the stabilization of curcumin. 80% Alcohol extract had the optimal stabilizineg ability for curcumin.

结果：姜黄的乙醇、丙酮、乙醚、醋酸乙酯等提取部位均能降低姜黄素的降解速率。80%的乙醇提取物对姜黄素的稳定作用最强。

The method: First of all, with 95%, respectively, ethanol, petroleum ether (60 ℃-90 ℃), acetone, chloroform and other organic solvents for extraction of total pigment shikonin ability to inspect, the better the selection of solvent extraction, and then choose extraction dynamic orthogonal extraction were optimized in order to Shikonin total extraction rate for the pigment inspection targets, optimization of the extraction of the best ways.

首先分别用95%的乙醇、石油醚(60℃-90℃)、丙酮、氯仿等有机溶剂对紫草总色素的提取能力进行考察，筛选出较佳的提取溶剂，再选用浸提法、动态提取法分别进行正交优选，以紫草总色素的提取率为考察指标，优选出最佳的提取方式。

However, fac-Alq3 has been obtained only in the subgram order by sublimation of mixed polymorphs of Alq3 or by thermal conversion of commercial Alq3 followed by acetone and chloroform treatment because synthetic control of a ligand configuration has been considered difficult as a result of the favorable formation of the thermodynamically stable mer isomer.

然而，因子Alq3得到了只有在subgram秩序的升华混合晶型的Alq3或热转换商业Alq3其次是丙酮，氯仿的待遇，因为合成控制配配置一直被认为困难是由于有利的形成的热力学稳定滨海异构体。

The results showed that Kaidimycin was chemically neutral, macrocylic polylactones, stable and liable to dissolve into water and pyridine, slight to dissolve into methanol, ethanol and N-butanol, difficult to dissolve into ethyl acetate, acetone, benzene and chloroform. Chemical reaction of functional group of Kaidimycin showed that it had glycoside, amino acid and aldehyde, no reducing sugar, polypeptide and phenol.

凯地菌素属中等极性的、中性抗生素，极性纸层析结果与多烯类抗生素的纸层析结果相似：易溶于水、吡啶，微溶于甲醇、乙醇、正丁醇，不溶于乙酸乙酯、丙酮、苯、三氯化碳；对高温、光照和紫外处理有很好的稳定性；官能团反应试验结果发现，凯地菌素可能含有糖苷键、氨基酸伯氨基和醛基，不含有还原糖、多肽和酚基，高锰酸钾、浓硫酸反应与多烯大环内酯类抗生素的特性相似；并且依据纯品，采用生物法和分光光度法对摇床发酵液进行了效价的测定。

In the present dissertation, the principles and application of the reaction rectification techology in the syntheses of benzyl chloride, chloroacetic acid, monochloroacetone were approached.

本论文采用反应精馏技术氯化苄的合成、氯乙酸的合成进行了认真的研究，并且对一氯丙酮、氯苄系列产品进行了反应精馏研究，都得到了理想的结果。

This is typically done by exchanging the ethanol for liquid acetone, allowing a better miscibility gradient, and then onto liquid carbon dioxide and then bringing the carbon dioxide above its critical point.

这是典型的交流所做的乙醇液体丙酮，允许一个更好的相容性梯度，然后到液体二氧化碳，然后将其二氧化碳的临界点以上。

Compared with the MgO prepared by direct thermal decomposition of the MgO precursor, the novel high-specific-surface-area MgO material contains more strong basic sites and less acidic sites and exhibited higher acetone yield and selectivity in isopropanol decomposition, making it a potential solid base catalyst.

与直接焙烧四水乙酸镁制得的MgO相比，这类新型高比表面积MgO具有较多的强碱位和较少的酸性位，并在异丙醇催化分解反应中表现出更高的丙酮收率和选择性，有望成为一类优良的固体碱催化剂。

Wedgeplug O-Seal plug valves with their positive, no-leak features are not only recommended as the best general purpose valves for handling hydrocarbons, vegetable oils, solvents, etc., but are ideal for such tough service as butane, propane, butadiene, acetone, ethyl alcohol, ammonia, anhydrous ammonia, benzene, vinyl chloride, dry chlorine, Dowtherm, ethane, ethylene, hydrogen chloride, napthalene, oxygen, hydrogen, phthalic anhydride, dry phosgene, phosphoric acid, potassium carbonate, styrene, molten sulphur, sulphur dichloride and related services within a temperature range from -300oF to + 450oF within pressure limits of the valves.

楔塞O形密封旋塞阀具有积极的、无泄漏特性，不但是最好的通用的阀门，用于处理碳化氢，植物油，溶剂等，还特别适用于严酷的应用环境，如丁烷，丙烷，丁二烯，丙酮，乙醇，氨，无水氨，苯，氯乙烯，干氯，道氏热载体，乙烷，乙烯，氯化氢，萘，氧，氢，邻苯二甲酸酐，干碳酰氯，磷酸，碳酸钾，苯乙烯，融化硫，二氯化硫，以及温度在-184oC至232oC之间，压力在阀门额定压力等级范围内的有关应用。

For long-term treatments, the rat administered daily by gavages for six weeks, the results of OGTT showed that guava fruit water or alcohol extracts could reduce the plasma glucose level in the diabetic Wistar rats, however there was on significant difference in insulin level among all tested groups. The results of carbohydrate metabolism showed diabetic Wistar rats administered with 200 or 400 mg/kg BW of guava fruit water or alcohol extracts could decrease more than 15% glucose-6-phosphatase and fructose-1,6-bisphosphatase activities, and it also increase more than 12% glucose-6-phosphate dehydrogenase activities to reduce inhibitory hexokinase from reducing glucose-6-phosphate level.

在醣类代谢方面，实验结果发现糖尿病鼠灌食番石榴果实水及乙醇萃取物六周后，肝脏醣质新生作用中丙酮酸合成肝醣之关键酵素glucose-6-phosphatase及fructose-1，6-bisphosphatase的酵素活性会降低15%以上；另一方面肝脏glucose-6-phosphate dehydrogenase酵素活性则明显增加12%以上，并造成glucose-6-phosphate浓度减少，进而降低其对hexokinase的抑制(因为hexokinase受其代谢产物G-6-P的浓抑制)，因此加速肝脏葡萄糖的糖解作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。