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The effect of the molar ratio of guaiacol/methyl- nitrate ,the reaction temperature, the reaction time, the choices of nitrating agent and solvent in the synthesis of 5 -nitro-guaiacol has been studied.

本文研究了愈创木酚／硝酸甲酯的摩尔比、反应温度、反应时间，硝化剂和溶剂的选择对5——硝基愈创木酚合成的影响。

The recoveries of the five compounds were between 95％ and 105％. CONGLUSION:This method is simple and effective, and can be used to determine phenolic acids from leaf of Ilex purprea Hassk.

首次建立了同时测定四季青中5种酚酸类成分的含量测定方法，可以用于同时测定四季青中的5种酚酸类成分的含量。

The relativity between biodegradability and nonyl branches structure for the isomers of nonylphenol is studied by the sequencing batch activated sludge process for NP accumulating behavior analyses in water environment.

为分析壬基酚在环境中的积累行为，基于间歇活性污泥实验和质谱解析方法，结合环境水体中NP检测分析，研究了污水生物处理过程中壬基酚同分异构体的生物降解差异与壬基分支结构的相关性。

Both of anti-oxidative activity and contents of polyphenol and pigment of Japanese red Perilla are higher than that of local Perilla.

多酚类物质和色素物质的含量与紫苏抗氧化活性之间存在显著的相关关系，证明了多酚类物质在紫苏抗氧化活性中的作用。

The performance of static adsorption of phenolic compounds onto this kind of resin was i...

研究了该树脂对水溶液中酚类化合物的吸附性能，并与NKA-II吸附树脂进行了比较，结果表明，固化单宁大孔吸附树脂对水溶液中苯酚的吸附能力高于NKA-II，这主要得益于树脂表面的酚羟基。

Methods Synaptosomes was made from hippocampus and incubated with artificial cerebrospinal fluid. 30μmol/L propofol, 50μmol/L picrotoxin or both was added into aCSF. Intralipid was administered as solvent control and any drugs was applied in control. To observe Ca~(2+)-dependent release of glutamate and GABA, dihydrokainic acid and nipectic acid were added into aCSF.

制备大鼠海马突触体，随机分为5组：PTX组加入印防己毒素使其终浓度为50μmol/L，Pro30+PTX组加入终浓度为30μmol/L的丙泊酚和50μmol/L的PTX，Pro30组加入终浓度为30μmol/L的丙泊酚，溶剂对照组加入脂肪乳，空白对照组不加入上述药物。

The stronger antioxidant capacity of tea polyphenol is due to the presence of phenolic compounds, such as catechins in its composition.

茶多酚之所以具有很高的抗氧化活性是由于酚类化合物的存在，如在它的结构中存在儿茶素。

The results showed that the amorphous iron oxide has highly catalytic activity. The intermediate products are pyrocatechin, hydroquinone, benzoquinone and low-grade fatty acid. The mechanism of catalyst oxidation is assumed that the free radical OH attacks benzene cycle at the adjacent position and para-position of OH on phenol so that the benzene cycle is opened and low-grade fatty acid is produced and transformed into CO2 and H2O.

结果表明，非晶铁氧化物催化剂在催化氧化降解苯酚时具有较高的催化活性，苯酚降解的中间产物有：对苯二酚、邻苯二酚、苯醌和低级脂肪酸，其降解机理是羟基自由基攻击苯环上OH的部位或对位而使苯环开环，生成低级脂肪酸，并最终转化成二氧化碳和水，从而使苯酚得以降解。

After 48h exposure, The GST activities were all inhibited under the exposure of phenol and pyrocatechol, but the GST activities were induced at first and then inhibited under the exposure of resorcinol.

处理48h后，体内GST活力随苯酚和邻苯二酚浓度的升高逐渐降低，而间苯二酚对GST活力的影响与处理24h后GST活力的变化趋势相似。

Femal rats were ovariectomized to build the model of osteoporosis, and then treated with Chinese drugs and stilbestrol respectively for 3 months. The results showed that both Chinese drugs and stilbestrol prevented the BMD, RBS and BTV from further declining in osteoporotic rats; but could not raise the BMD, RBS and BTV that had declined.

用卵巢切除的方法建立大鼠骨质疏松模型，然后对模型分别给乙烯雌酚或中药治疗3个月后发现，乙烯雌酚或中药治疗可以阻止股骨密度，抗弯强度和胫骨骨小梁体积的下降，但两种药物均不能使已经下降的股骨密度、抗弯强度和胫骨骨小梁体积升高。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。