酚类

The results showed that the addition of alcoholate increased the elution recovery of phenolic acids on resins in supercritical CO2. The infrared spectroscopy was used to study the interaction between solute and solvent molecules in supercritical fluid. The hydrogen bond between alcoholate entrainer and phenolic acid was the main factor to increase the ability of supercritical elution. The results appeared that salvianolic acids could be extracted by supercritical carbon dioxide with ethanol as entrainer.

结果表明：醇类夹带剂的加入能大大提高树脂上酚酸类化合物的超临界洗脱率；通过红外光谱技术研究了超临界流体中分子间的相互作用与超临界洗脱过程的关系，认为醇类夹带剂与酚酸类化合物的氢键作用是提高酚酸类化合物洗脱率的主要因素；以乙醇为夹带剂的超临界CO2洗脱可应用于丹参酚酸的提取。

Some new lignans of dibenzocycloheptadiene and benzofuran analogues were first synthesized successfully by intramolecular nonphenolic oxidative coupling and rearrangement of the 1,4-biaryl-2,3-dimethyl-2,3epoxide substituted butanes with DDQ in TFA.

以DDQ为非酚氧化偶合试剂与1，4-二芳基-2，3-环氧类化合物进行分子内的非酚氧化偶合反应，首次合成了二苯骈环庚二烯类和苯骈呋喃类的新型木脂素，其结构由不同光谱和X-单晶衍射所确证。

The third category is planted second-generation Chinese fir, the soil phenol content is highest. It shows that along the ecosystem conversion, or as the increase of Chinese fir planted generation, the phenols in soil are accumulated to a certain extent.(6) Detecting the soil of four systems and found that there exist p-hydroxybenzoic acid, vanillic acid and ferulaic acid, but not exist cinnamic acid.

根据主成分分析结果，大致可以把4种系统分成3类，第一类为天然更新常绿阔(来源：ABC论文8f网www.abclunwen.com)叶林，其土壤酚含量低；第二类为老龄杉木林和二代杉木萌芽天然更新林，其土壤酚含量较高；第三类为二代杉木人工林，其土壤酚含量最高。

The effects of phenolic acid compounds in vegetables and fruits on metabolicactivation of BaP in rats,as well as 〓 and TCA induced lipid peroxidation inmouse and Salmonella typhimurium TA104 cells were investigated using DNAadducts as a biomarker to assess DNA damage induced by xenobiotic carcinogens.BaP was used to study the genotoxic carcinogenesis,while 〓 and TCA were usedto study the non-genotoxic carcinogenesis.The possible protection mechanisms ofphenolic acid compounds on DNA damage were studied.

本研究根据化学致癌过程的遗传毒性和非遗传毒性机理，以DNA加合物作为机体接触外来化学物而导致DNA损伤的生物学标志物，通过观察酚酸类化合物对大鼠体内BaP活化代谢以及〓和TCA诱导小鼠肝微粒体脂质过氧化的影响，及酚酸类化合物对BaP和TCA诱导的沙门氏菌TA100和TA104形成DNA加合物的影响，探讨蔬菜、水果中酚酸类化合物对外来化学物诱导的DNA损伤的保护机制。

The results showed that (1) all the arteries tested had tachyphylaxis to peptidergic agonists;(2) the desensitization of the arteries tested to catecholamines was uneasy except BA;(3) the desensitizations to AⅡ, AVP and PE were homologous;(4) the endothelium-EDRF -cGMP pathway had no contribution to the tachyphylaxis of PA to AⅡ and AVP;(5) membrane receptor cycling (internaliation and re-insertion) contributed only in part to homologous desensitization;(6) there was no change in the function of voltage-dependent Ca〓 channel during desensitization to AⅡ and AVP;(7) some changes in G protein occurred during homologous desensitization;(8) the most surprising finding was that the caudal arterial smooth muscle of stroke-prone spontaneously hypertensive rat showed tachyphylaxis to α〓-adrenoceptor agonist PE, while the tachyphylaxis of pulmonary artery of SHR was not changed compared with that of Wistar rat.

脱敏是消除效应的一种有效方式。因此，研究不同血管对不同激动剂脱敏的差异及阐明脱敏的机制，有助于阐明血管活动个性化的机制。研究表明：血管对肽类激动剂的脱敏方式为快速脱敏，而对儿茶酚胺类激动剂不易脱敏；血管对肽类激动剂和儿茶酚胺类激动剂表现为同源脱敏；内皮-NO-cGMP通路不参与肺动脉对AⅡ和AVP的快速脱敏；用PAO抑制膜受体的内在化只能短暂抑制脱敏的发展，提示用膜受体数目的下调说不能完全解释同源脱敏；血管对AⅡ和AVP脱敏后VSMC细胞膜电压依赖性钙通道功能无改变；CA对AVP脱敏后GTPγS的量-效曲线下移，说明有G蛋白的变化，但这种变化并非G蛋白的亲和性改变；SHRsp之CA平滑肌对AⅡ和AVP的快速脱敏并未减弱，但对PE却表现为快速脱敏，这是我们首次发现的一个非常有趣的现象。

Addition of paraquat enhanced phenolic compounds and formaldehyde of cultures too. And concentration of malondialdehyde was increased in the first 24 h.

百草枯的加入促进了胞外酚类化合物与甲醛的浓度的增加，而丙二醛的浓度在培养的前24 h内增加，随后下降。

Concentration of chlorophylls in the leaves might be adopted to be an index for sex identificationbecause of the closely negative correlation between concentrations of chlorophylls and watersoluble phenolic substances.

由于水溶性酚类物质的含量与叶片中叶绿素含量之间的负相关性达显著水平，测定方法更为简便的叶绿素含量可同时成为复叶槭植株性别判断的另一项生理指标。

Printed Wiring Boards: All PWBs are made of paper phenolic, paper epoxy or glass epoxy, min 1.6 mm thick, flammability rated V-1 or better.

印刷线路板：所有PWB板对应是纸做的酚类物质，纸张或玻璃环氧树脂环氧树脂，最小1.6毫米厚，易燃性额定是V - 1或更好的。

The beverages were equal in calorie and sugar content but only the Concord grape juice contained natural polyphenolic compounds, which have antioxidant and anti-inflammatory properties.

该饮料都是平等的，在热量和糖含量，但只有康科德葡萄汁中所载的天然多酚类化合物，具有抗氧化和抗炎性能。

Procyanidin contents of 5 cultivars were 8.46-13.90 mg·g~(-1), and 'Golden Delicious' was found to contain much more procyanidins followed by 'Jonagold'.

原花青素是一类聚多酚类物质，由不同数量的儿茶素、表儿茶素或儿茶素与表儿茶素缩合而成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。