丙酮

The paint includes liquid A, which consists of acrylic resin, mixed solvent of xylene, acetone and isophorone, organic silicone solution, superfine silica powder, titanium dioxide powder, methyl-(N-beta-amino ethyl gamma-amino propyl)-dimethoxy siloxane solution, gamma-methyl acrylyloxy propyl tromethoxy siloxane solution and fluorocarbon modified siloxane; and liquid B, which consists of hexamethylene diisocyanate, polydiisocyanate, xylene, and methoxy propyl acetate. When the paint is used, two components are mixed together.

由丙烯酸树脂、二甲苯和丙酮及异佛尔酮混合溶剂、有机硅酮溶液、超细二氧化硅粉、钛白粉、甲基(N-β-氨乙基γ-氨丙基)二甲氧基硅烷溶液、γ-甲基丙烯酰氧基丙基三甲氧基硅烷溶液、氟碳改性硅氧烷溶液组成A液，由六亚甲基二异氰酸酯聚异氰酸酯、二甲苯和甲氧基乙酸丙酯混合溶液组成B液，使用时将两组分混合。

This dissertation is mainly focused on the reactivity of methylenecyclopropanes and comprises six parts. 1 The reactions of methylenecyclopropanes with phenylsulfenyl chloride, phenylselenyl chloride and diphenyl diselenide; 2 The coupling reactions of the ring-opening products derivated from methylenecyclopropanes; 3 The palladium-catalyzed ring-enlargement of mono-aryl group substituted methylenecyclopropanes to cyclobutenes. 4 The gold-catalyzed domino ring-opening and ring-closing hydroamination of methylenecyclopropanes with sulfonamides; 5 The Lewis acid-catalyzed reactions of mono-aryl group substituted methylenecyclopropanes with diethyl ketomalonate in the presence of water; 6 The iodobenzene diacetate mediated novel 1,3-dipolar cycloaddition of methylenecyclopropanes, vinylidenecyclopropanes, and methylenecyclobutane with phthalhydrazine.

本论文主要研究了亚甲基环丙烷类化合物的一些化学反应性能，共由以下六部分组成：1、亚甲基环丙烷类化合物与苯硫氯、苯硒氯及二苯基二硒的反应；2、亚甲基环丙烷类化合物开环产物的偶联反应；3、单芳基取代的亚甲基环丙烷类化合物在钯催化剂作用下的扩环反应；4、金化合物催化磺酰胺对亚甲基环丙烷类化合物的串联开环关环氨氢化反应；5、路易斯酸催化亚甲基环丙烷类化合物与丙酮二羧酸二乙酯在有水存在下的反应；6、醋酸碘苯促进的亚甲基环丙烷类化合物、亚乙烯基环丙烷类化合物及亚甲基环丁烷类化合物与邻苯二甲酰肼的新型1，3-偶极环加成反应。

A new flavanone from Dryopteris sublaeta;2. Isolation and Structure Identification of a New Flavanone from Dryopteris sublaeta;3. RESULTS Five compounds are isolated from the ether fraction of 70% acetone-extracts,and their structures were identified as(2S)5,7-dihydroxy-6,8-dimethyl flavanone desmethoxymatt.

结果浅裂鳞毛蕨地上部分用体积分数为70%丙酮提取液乙醚萃取部位分离得到了5个化合物，分别鉴定为：(2S)5，7-二羟基-6，8-二甲基二氢黄酮，(2S)5，7-二羟基-6，8-二甲基-4′-甲氧基二氢黄酮，(2S)5，7，2′-三羟基-6，8-二甲基-二氢黄酮，(2S)5，7，4′-三羟基-3′-甲氧基-6，8-二甲基二氢黄酮，(2S)5-羟基-4′-甲氧基-6，8-二甲基二氢黄酮-7-O--βD-葡萄糖苷。

A Product main business categories: chemical solvents white oil, toluene, xylene, durene, valitin water, acetate, D resin, acetone, butanone, cyclohexanone , anti-white water, dichloromethane, trichloroethane, trichlorethylene, loose water-saving washing network water, open water, wash water, and days that water, rust agent, to water-logging, washing machine water, decontamination water, n-butyl alcohol, isopropyl alcohol, ethanol, industrial alcohol, car-washing water, washing machine water, clean lines of water, cleaning machine water, fire water, paint remover, fungicides, antifreeze water, chloroform, grinding fluid , diluent, release agent, dehydration agent substantial industrial solvents.

主要经营产品 A类：化工溶剂白电油、甲苯、二甲苯、四甲苯、凡立水、乙脂、丁脂、丙酮、丁酮、环己酮、防白水、二氯甲烷、三氯乙烷、三氯乙烯、松节水、洗网水、开油水、洗面水、天那水、除锈剂、去渍水、洗枪水、去污水、正丁醇、异丙醇、乙醇、工业酒精、洗车水、洗机水、抹线水、抹机水、火水、脱漆剂、杀菌剂、防冻水、哥罗仿、研磨液、稀释剂、脱模剂、脱水剂等大量工业溶剂。

METHODSequence analysis of Pyruvate orthophosphate dikinase from Echinochloa crusgalli var frumentaceaRoxb.

丙酮酸磷酸双激酶是一种在细菌、原生生物和高等植物中广泛存在的酶[1￣4]。

Its mainly produced by cumene peroxidation process, which requires three steps of reactions and is limited by the market requirement of equimolar byproduct acetone.

目前工业合成苯酚的最主要方法是异丙苯法，此法经过三个步骤：以苯和丙烯为原料，在酸催化下生成异丙苯，异丙苯经氧化生成过氧化氢异丙苯，再用硫酸或树脂分解，同时得到等摩尔的苯酚和丙酮。

Tyrosine An aromatic amino acid derived from erythrose 4-phosphate and phosphoenolpyruvate.

酪氨酸：由4-磷酸赤藓糖和磷酸烯醇式丙酮酸衍生的一种芳香族氨基酸。

Phenylalanine An aromatic AMINO ACID derived from phosphoenolpyruvate and erythrose 4-phosphate.

苯丙氨酸：是来自于磷酸烯醇式丙酮酸和4-磷酸赤藓糖的芳香族氨基酸。

Total volatile components, acetone, cyclohexadiene, cyclopentyl ethyne, acetic acid and hexanal contents show more significant correlation with storage time, physiological biochemical indexes respectively, and it can be used as an assessment index for the storage quality of stored maize.

总挥发性物含量、丙酮、对环己二烯、环戊乙炔、乙酸、己醛的含量与储藏时间、生理生化指标呈较高相关性，可作为玉米储存品质变化的评判指标。

objectivethe extraction technology of chlorogenic acid from eucommia ulmoides leaf was studied with acetone as solvent.

目的研究以丙酮为溶剂提取杜仲叶绿原酸的最佳工艺条件。

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。