多元酚

The method adopts powders (10.0 parts of mass) of crop straws and phenols or polyalcohol compound (10 to 100 parts of mass) which is firstly pre-heated by 10 to 30 minutes under a temperature of 30 to 200 DEG C with the effect of acid catalyst (0.5 to 10 parts of mass) for a reaction of 30 to 240 minutes; after the reaction, the compound is washed, neutralized, filtered and dried to obtain a solid appearing as a color from citron yellow, yellow, bight brown to seal brown; wherein, the solid includes 64.0 to 70,0 percent of fibrin and 4.1 to 7.6 percent of lignin.

秸秆"液化"预处理制备生产燃料乙醇原料的方法，是用农作物秸秆的粉末(10.0质量份)和酚类或多元醇类化合物(10～100质量份)，在酸性催化剂(0.5～10质量份)存在下，在30～200℃温度下预热10～30min后，反应30～240min，反应完毕进行洗涤、中和、过滤和干燥而得呈淡黄色-黄色-浅褐色至深褐色固体，其中，纤维素含量64.0～70.0％，木质素含量4.1～7.6％。

On basis of the color reactions of 4-(2-pyridine azo)-resorcin with copper, zinc and manganese, but the absorption spectrum of complex compounds which they created overlapped with each other seriously. Dealing with the spectrum data with the method of multivariate calibrations of chemometrics, we can simultaneously analyze the measured spectrum of mixture.

基于这三种金属离子均能和4-（2-吡啶偶氮）－间苯二酚发生显色反应，但所生成络合物的吸收光谱重叠比较严重，采用化学计量学的多元校正方法，解析了Cu(上标 2+)、Zn(上标 2+)、Mn(上标 2+)混合物的测量光谱。

Discuss the method of synthasizing the polybasic hydroxyethoxy benzene by thereaction of polybasic phenol with 2-chloroethanol in the ethanol solvent under the conditionof phase transter catalyst, which raises the product yield and shortens the reaction time.

以多元酚为原料，乙醇做溶剂，在相转移催化剂条件下与氯乙醇作用，合成多元羟乙氧基苯的方法，提高了产品产率，缩短了反应时间。

Those processed sebastan plum cordia in maturity level of 8 to 9 showed no austerity, but due to their higher activity on polyphenol oxidase, immediate processing or dipping in 3％ of salt water was a necessary step after picking up to avoid their browning reaction.

但因成熟度8~9分的破布子其多元酚氧化活性较大，因此采收后须立即加工处理或浸泡在3％食盐水中，以避免发生褐变反应。

Uncatalyzed Michael addition with polyhydric phenols to the base resin improves structural characteristics.

非催化Michael加成与多元酚基树脂改善结构特点。

By one-step epoxidation of double bond in the side chain of cardanol,epoxy-cardanol has been synthesized,which may interact with diethylene triamine to form amino-cardanol.

采用一步环氧化法对腰果酚侧链进行氧化，其环氧化物与多元胺反应生成氨基腰果酚。

Comparative Analysis of Ursolic Acid in Hawthorn Leaves by HPLC.

LC-UV和LC-MS在山楂叶多元酚类成分分析中的应用比较。

Consist of gallic acid and hexahydroxydiphenic acid and their derivatives esterified with glucose.

这是一类由酚酸及其衍生物与葡萄糖或多元醇通过甙键或酯键而形成的化合物。

"What we really would like to be the final answer, and can't quite say yet, is that resveratrol will mimic the effects of calorie restriction," said Joseph Baur of the team of Harvard.

鲍尔说：&我们希望得出的结论是，多元酚能够起到与热量限制相同的作用，但目前还无法确定。&

"What we really would like to be the final answer, and can't quite say yet, is that resveratrol will mimic the effects of calorie restriction," said Joseph Baur of the team of Harvard.

哈佛医学院研究小组成员约瑟夫·鲍尔说：&我们希望得出的结论是，多元酚能够起到与热量限制相同的作用，但目前还无法确定。&

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。