醋酸

ConclusionThere is good cytotoxicity of the ethyl acetate and acetone extracts from Alocasia macrorrhiza to tumor cells, and no obvious acute toxicity has been observed. Therefore these two parts have good anti-tumor prospects.

结论醋酸乙酯和丙酮提取物有较好的细胞毒活性，没有明显的急性毒性，这两部分有较好的抗肿瘤前景。

The obvious acute toxicities were not observed for the ethyl acetate and acetone extracts of Alocasia macrorrhiza under the treatment doses of 60g·kg-1 and 36.5 g·kg-1 respectively.

海芋的丙酮和醋酸乙酯提取物分别在60 g·kg-1和36.5 g·kg-1的给药剂量下没有显示明显的急性毒性。

ResultsThe IC50 of the ethyl acetate extract from Alocasia macrorrhiza to A549, B16, BGC-823 were 94.6, 541.9,629.5 μg·ml-1 respectively,and those of the acetone extract from Alocasia macrorrhiza to A549 and B16 40.9,438.0 μg·ml-1 respectively. But there were quite large dosages of the IC50 of the extracts of cyclohexane, benzine, ethyl alcohol and water from Alocasia macrorrhiza to all kinds of cell lines.

结果海芋醋酸乙酯提取物对A549，B16，BGC-823的IC50分别为94.6， 541.9，629.5 μg·ml-1，丙酮提取物对A549，B16的IC50分别为40.9，438.0 μg·ml-1，而海芋的环己烷，石油醚，乙醇，水提物对各种细胞株的IC50剂量都比较大。

Its best carbon source is sodium acetate and best nitrogen source is ammonium chloride.

它的最佳的碳源是钠醋酸盐，并且最佳的氮气来源是卤砂。

Its best carbon source is sodium acetate andbest nitrogen source is ammonium chloride.

它的最佳的碳源是钠醋酸盐，并且最佳的氮气来源是卤砂。

Among these manganese acetate and cerium ammonium nitrate have been used most efficiently.

在众多金属盐类中以醋酸锰和硝酸铈最为有效率。

Waste minimization in ammonolysis process of O,O-dimethylphosphorochloridothioate;2. An Investigation on the Micelle-Catalytic Hydrolysis and Ammonolysis of Carboxylic Acid Esters;3. The final product is generated by ammonolysis of the compound under high pressure.

以4-溴-1，8-萘酐为原料，用2，4-二甲基苯胺在醋酸中与之反应得到N-2′，4′-二甲基苯基-4-溴-1，8-萘酰亚胺，然后将NDNA在高压下用氨水进行氨解得到最终产品。

The results showed the population of endophytic bacteria from oilseed rape was very abundant.These bacteria species is the first reported in oilseed rape, and Mycoplana bullata、Acinetobacter calcoaceticus、Pantoea dispersa、Pantoea ananas、Enterobacter cowanii、Pseudomonas fulva、Pseudomonas parafulva are new record species of endophytic bactria..

通过16S rDNA 序列系统发育分析对PCR-RFLP 划分的主要类群进行了鉴定，共鉴定出内生细菌16 种，分别是，分别为：蜡状芽孢杆菌、泡状枝动菌、醋酸钙不动杆菌、鲍氏不动杆菌A。

In this thesis, a convenient and efficient synthesis of highly functionalizeddihydropyrido[2,3-d]pyrimidines via a double [5 + 1] annulation strategy startingfrom easily available α-alkenoyl-α-carbamoyl ketene--acetals 1 and cheapreagents (NH4OAc, DMF, and POCl3) has been developed.

本论文探索了一种简便有效的合成高度官能化的二氢吡啶并[2，3-d]嘧啶的方法，此方法由易得的α-乙酰基-α-氨基乙酰基二硫缩烯酮1和便宜的试剂(醋酸铵，二甲基甲酰胺和三氯氧磷)通过两步[5 + 1]加成而实现。

Water, Glycerin, Methylsilanol Mannuronate, Sodium Carboxymethyl Beta-Glucan, Sodium Hyaluronate, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Madecassoside, EGF *, FGF *, Telomerase *, Panthenol, Borago Officinalis Seed Oil, Anthemis Nobilis Flower Extract, Tocopherol, Tocopheryl Acetate, Cetyl Palmitate, Citrus Aurantium Dulcis Peel Oil, Citral, Citronellol, Limonene, Linalool, Zea Mays Starch, Butylene Glycol, PEG-40 Hydrogenated Castor Oil, Hydrolyzed Corn Starch, Hydrolyzed Corn Starch Octenylsuccinate, PEG-33, PEG-8 Dimethicone, Hydroxyethylcellulose, PEG-14, Xanthan Gum, Carbomer, Polysorbate 20, Caprylyl Glycol, Phenoxyethanol, Methylparaben.

主要有效成分是：聚羧基甲基β葡萄糖的钠盐，保湿锁水；透明质酸，高效保湿；寡胜肽；四胜肽；羟基积雪草甙，抗炎症，促进胶原蛋白的合成；表皮生长因子EGF，促进细胞新陈代谢；成纤维细胞生长因子FGF，促进胶原蛋白合成；端立酶，一种RNA与蛋白的复合体，可通过合成新的端粒而修补受损的DNA端粒，使细胞持续不停的增生，也就是利用成人干细胞转变为全新的细胞。维他命B5；琉璃苣籽油，含维他命和矿物质；洋柑橘萃取液，舒缓，抗过敏；维生素E；醋酸盐维生素E；橙皮油；水解玉米淀粉。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。