酚

The research suggested that American white oak is the best choice for the production of grape wine with strong oak aroma and European oak is the best choice for the production of grape wine with harmonious oak aroma, fruit aroma and wine aroma; air drying process of barrel plates would influence the content of total phenol, tannin and volatile substances including vanillin and MOL; and baking intensity will change original content of chemical compositions in oak and make oak barrel possess different aroma characteristics and phenol substance content.

研究表明，酿制橡木香较浓郁的葡萄酒选用美国白栎较好，酿造橡木香、果香、酒香协调的葡萄酒则选择欧洲橡木较适宜；板材风干过程对橡木板材中的总酚、单宁含量及挥发性香气物质香兰素和橡木内酯的含量均有影响；烘烤强度可改变橡木木材原有的化学组分含量，使橡木桶具有不同的呈香特性和酚类物质含量。

When oxygen is present in cells, polyphenol oxidase enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products.

当氧存在于苹果组织的细胞中时，叶绿体（含有叶绿素和进行光合作用的地方）中的多酚氧化酶，会迅速地将天然存在于苹果组织中的酚类化合物氧化为邻醌。

A colorless aromatic liquid C10H12O2, made from clove oil and used as a dental analgesic and in perfumery.

丁子香酚一种无色芳香的液体酚 c10h12o2，存在于丁香油中，用作牙科的止痛剂，并用于香水中

The effective concentrations of clove oil on adult Cynoglossus semillaevis Gunther were 40-80 mg/L.

丁香酚麻醉半滑舌鳎成鱼的有效浓度为40-80mg／L，在此范围内，丁香酚浓度越高鱼体达到4期的麻醉时间越短，但复苏时间没有明显差别。

Fruits and beverages such as tea, red wine, cocoa, and coffee are major dietary sources of polyphenols, micronutrients found in plant-derived foods.

水果和饮料，例如茶、红酒、可可饮料和咖啡是主要的多酚类物质的饮食来源，多酚是一种存在于植物食物中的微量营养素。

According to the strong reducibility of lithium aluminium hydride and asymmetric selectivity of binaphthol,the authors reduce camphor into D-borneol by using D-binaphthol modified lithium aluminium hydride as chiral reagent.

根据氢化铝锂的强还原性和联萘酚的不对称选择性，用右旋联萘酚改性过的氢化铝锂为手性试剂，把樟脑还原成右旋龙脑。

The effect of single factor indicated that lower concentration of tea polyphenols and oxidant, temperature, ester proportion and pH value, shorter reaction time were favorable to the formation and accumulation of TFs, higher concentration of tea polyphenols, temperature, ester proportion and pH value, longer reaction time were favorable to the formation and accumulation of TRs.

借助参数模型研究各参数因子对TFs和TRs形成的影响，结果表明：茶多酚浓度、温度、酯比例及pH值对TFs和TRs形成与积累均有显著影响，反应时间对TFs影响显著，氧化剂对TRs影响显著；单因素效应显示：较低的茶多酚和氧化剂浓度、适当的低温和较短的时间、低的酯比例和pH较有利于TFs形成与积累，而有利于TRs形成与积累的参数则相反。

The purpose of this work is to develop new methods for syntheses of polyimides derived from chlorophthalic anhydrides.

本工作的目的是以氯代苯酐和二胺为原料，制备双氯代酞酰亚胺单体，然后进行聚酰亚胺合成方法的研究，以达到减少合成步骤，降低其生产成本的目的，主要内容如下： 1由双氯代酞酰亚胺与双酚A在不同体系中进行聚合反应，发现双酚是否完全成盐和聚合体系含水量是决定聚合物分子量的关键因素。

It is concluded that various phenolic acids had irregular effects on the growth of the pathogens at different concentrations, and there is a complicated relationship between the autotoxins and the occurrence of disease in the ginseng field.

不同酚酸在不同浓度下对2种西洋参病原菌作用不同，在田间实际情况下，化感酚酸与西洋参病害的发生之间可能是一种复杂的过程

Also used as domestic cleaning agents and co-formulants in pesticides and biocides.

在纺织品的湿处理过程中，壬基酚和壬基酚乙氧基化物

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。