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The synthesis of celery ketone from butyl aldehyde and ethyl acetoacetate was improved with higher yield by using solid superbase(K2O/γ-Al2O3) for the first time.

在正丁醛和乙酰乙酸乙酯为原料合成芹菜酮的合成过程中,对其催化方法进行改进。

The influence of reed produced allelopathy material eathyl-2-methyl acetoacetate on respiration action, photosynthesis action and antioxidant enzymes system of Microcystis aeroginosa were studied.

研究了芦苇产生的化感物质2-甲基乙酰乙酸乙酯对铜绿微囊藻呼吸作用、光合作用和抗氧化酶体系的影响。

Supported 12-Phosphotungstic Acid and Its Salts as Catalysts for the Synthesis of Fructone and Fructone-B;2. Their catalytic activities were measured by synthesis of fructone-B from ethyl acetoacetate and 1,2-propanediol.

制备了一系列以脱铝超稳Y沸石为载体的磷钨酸及其铯盐催化剂,考察了催化剂在以乙酰乙酸乙酯和1,2-丙二醇为原料催化合成草莓酯反应过程中的性能。

The method was proved to be simple,rapid,practical and highly sensitive.It is an efficient method for the quality control of acetoacetic ester.

本法简便,快速、实用,灵敏度高,可有效地用于乙酰乙酸乙酯的质量控制。

Objective To determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of Edaravone, by gas chromatography.

摘要] 目的:用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。

ALDC can decompose a-Acetolactic Acid into Acetoin directly and rapidly.

aldc的可分解-乙酰乙酸乙成直接和迅速。

The a-ALDC can decarboxylate a-acetolactate directly to form acetoin without the formation of diacetyl.

ALDC可催化α-乙酰乳酸直接脱羧转化成乙偶姻,而不经过形成双乙酰的步骤。

The producing of tetrapod-like CuCl was found to be the result of co-effect of acetylacetone and ethylene glycol.

通过对溶剂所起的作用的研究,发现四足形CuCl晶体的形成是乙二醇和乙酰丙酮协同作用的结果。

Palladium thin film has been deposited on glass substrate in mixed solution of ethylene glycol and acetylacetone.

在乙二醇和乙酰丙酮混合溶剂中将钯多晶膜沉积在玻璃片上。

The role of the solvents played in the reaction process was explored, which showed that acetylacetone was the reductant while ethylene glycol was performed as a ligand of Cu〓 as well as a"soft template" for the anisotropic growth of CuCl.

对溶剂在反应过程中所起的作用进行了深入研究,发现乙酰丙酮为还原剂,乙二醇即作配体又是CuCl晶体各向异性生长的&软模板&。

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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.

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付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。