酸基

This research utilizes the method of organic synthesis to put different amount of aminophenol into hydroxybenzoic acid or caffeic acid so as to produce a series of high yield of polyhydroxy benzamides (1~40).Through the following different activity tests, discussing the applied value of cosmetics.Ⅰ.

摘要 本研究主要利用有机合成方法，将具有不同数量及在不同位置之羟基取代之安息香酸及咖啡酸分别与胺基苯酚化合物进行醯胺化反应，得到一系列高产率之多酚醯胺类衍生物(1~40)，经由下列不同活性测试方法，探讨其化菻~上的应用价值。

Propionic acid is an important chemical raw materials, due to the lack of domestic technology, the paper is to study low, High activity of ethanol Oxo acid catalyst.

丙酸是一种重要的化工原料，由于国内技术的欠缺，本文旨在研究低要求、高活性的乙醇羰基合成丙酸催化剂。

When BMSCs proliferated to enough cell number (7×106). 500 000 cells were centrifuged to a pellet and cultured in chondrogenic medium supplemented with DMEM high-glucose, insulin, transferring, selectin, pyroracemic acid, 2-pyrrolidine carboxylic acid, BSA, dexamethasone and ascorbic acid for 6 weeks.

当培养的骨髓基质干细胞达到7×106个细胞时，将每500 000个细胞离心制成高密度细胞微球，在含有DMEM高糖、胰岛素、转铁蛋白、选择素、丙酮酸、脯氨酸、 BSA、地塞米松、抗坏血酸的促软骨细胞分化培养液培养6周。

When BMSCs proliferated to enough cell number (7×10^6). 500 000 cells were centrifuged to a pellet and cultured in chondrogenie medium supplemented with DMEM high-glucose, insulin, transferring, selectin, pyroracemic acid, 2-pyrrolidine carboxylic acid, BSA, dexamethasone and ascorbic acid for 6 weeks.

当培养的骨髓基质干细胞达到7×10^6个细胞时，将每500000个细胞离心制成高密度细胞微球，在含有DMEM高糖、胰岛素、转铁蛋白、选择素、丙酮酸、脯氨酸、BSA、地塞米松、抗坏血酸的促软骨细胞分化培养液培养6周。

The strategy involves a staged combustion, where a hydrocarbon fuel added in the second, fuel-rich stage provides hydrocarbon radicals which can react with and finally reduce the NOx formed in the first, fuel-lean stage, such that NOx formed in the first stage reacts with small hydrocarbon radicals present in the second stage combustion, finally leading to N〓, and to HCN which in turn is converted to NO or N〓. Understanding of the chemistry in this second reburning stage is clearly a key to understanding and optimizing reburn technology.

目前消除NOx的主要方法是向燃烧的废气中加入某些化学物质使其重新燃烧(Selective Noncatalytic Reduction of NO processes，SNCR)，RAPRENOx过程是SNCR的主要方式之一，其实施是向燃烧产生的废气中加入异氰酸，异氰酸在高温下经一系列包括NCO的自由基反应，可以从燃烧的废气中迅速除去NOx化合物。

Recent years many foreign researches show citrulline has a lot of important physiological functions such as radical-scavenging hydroxyl,indicator of the foreign exclusive effect,vasodilatation,stabilizing blood pressure, diagnosing rheumatoidal arthritis,antioxidation and so on.

近年来国外的众多研究表明，瓜氨酸具有很多重要的生理功能，如清除自由基、异体排斥效应指示剂、血管舒张作用、稳定血压以及诊断类风湿关节炎、抗氧化等，瓜氨酸正越来越多地被运用到食品、化妆品和药物上。

Rosolic acid reacted with acetic anhydride to synthesize rosolic acid -triacelate ester [tri(4-acetoxy) phenyl methane] under reflux condition.

以玫红酸、醋酸酐为原料，采用加热回流法合成了玫红酸三乙酸酯[三(4-乙酰氧基)苯基甲烷]。

The invention relates to a nanometer gluconic acid smectite and a preparation technique, which is characterized in that: an alkali calcium bentonite and a gluconic acid are adopted as materials to react in the existence of the dispersant of ethanol-water solution.

本发明涉及纳米葡萄糖酸蒙脱石及制备工艺，其特征是：以碱性钙基膨润土和葡萄糖酸为原料，在乙醇水溶液分散剂的存在下反应。

Stearyl 18B Glycyrrhetinate,18B Glycyrrhetinate,Monoammonium Glycyrrhizinate, Dipotasssium Glycyrrhizinate.

主要产品：甘草次酸硬脂基脂，甘草次酸，甘草酸单铵盐，甘草酸二钾盐

A rat model induced by injecting acetic acid into the subserosa of stomach was used.Uicer index was measured,the level of nitri oxide in serum and plasma endothelin-1(ET-1) was examined.

采用大鼠乙酸性胃溃疡模型，分别以消溃灵灌胃和左旋精氨酸、亚硝基左旋精氨酸腹腔内注射治疗7 d和14 d后，测定溃疡指数、溃疡抑制率，检测血清一氧化氮及血浆内皮素(ET-1)含量。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。