酚

Results showed that reaction temperature has little effect on the molar ratio of catechol to hydroquinone and reactive period of catalyst.

试验结果表明，反应温度对反应产物中邻苯二酚/对苯二酚的比例和催化剂的活性周期的影响不明显，过氧化氢/苯酚摩尔比对邻苯二酚/对苯二酚的比例的影响较大，提高过氧化氢/苯酚摩尔比会降低邻苯二酚/对苯二酚的比例，缩短催化剂的活性周期。

In the detection experiments, the scan rate is set at 0.3 V/s under the analysis of linear sweep voltammetry. On the cyclic voltammetry plot, each pair of clear redox peaks was observed for 4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), and penta- chlorophenol. The potentials of the redox pairs were 1.218 and -0.460 V for 4-CP, 1.128 and -0.448 V for 2,4-DCP, and 1.037 and -0.473 V for PCP.

在侦测污染物的实验之中，使用0.3 V/s做为线性扫描伏安法的最佳扫描速度，利用循环伏安法扫描可测得4-氯酚、2，4-二氯酚及五氯酚水溶液中氧化与还原波峰，4-氯酚的氧化与还原电位为1.218与-0.460 V、2，4-二氯酚之氧化与还原电位为1.128与-0.448 V及五氯酚之氧化还原电位为1.037与-

objective: to compare with 4 kinds anaesthesia of simplicity propofol, propofol complex fentanyl, tramadol or ketamin , and to research the reasonable dispensing of propofol for induced abortion operation.method: 200 forepart pregnant women with asa ⅰ～ⅱgrade who free will stop gestation,they were divided into 4 groups randomly :p group was simplicity propofol; f group, t group and k group was mainlined fentanyl 0.75μg/kg,tramadol 1mg/kg,ketamine0.2mg/kg respective before propofol abduction, and continuous detected map,hr,spo2 in the operation, and to note first dosage and total dosage of propofol, revival time, leave hospital time, ill reactivity in the operation.

目的：通过比较单纯异丙酚、异丙酚复合芬太尼、曲马多或氯胺酮四种麻醉方法，探究人工流产手术合理的异丙酚麻醉配方。方法：200例asaⅰ～ⅱ级、自愿终止妊娠的早孕妇女随机分为四组：p组，单纯异丙酚麻醉组；f组、t组、k组在异丙酚诱导前分别静注芬太尼0.75μg/kg、曲马多1mg/kg、氯胺酮0.2mg/kg。术中连续监测map、hr和 spo2。记录各组病人异丙酚的首剂量和总剂量、苏醒时间、离院时间及术中术毕不良反应的发生情况。

The separation of tocopherols and tocotrienols by using the method of adsorption chromatography on silica and on silica impregnated with silver nitrate have been discussed. Satisfactory separation could be obtained with argentation column chromatography by eluting batchwise with n-hexane containing increasing amounts of diethyl ether. More than 90% of vitamin E amount in eluate was tocotrienols.

以乙醚正己烷混合溶液为淋洗液，探讨了硅胶柱层析和硝酸银硅胶柱层析分离生育三烯酚和生育酚的效果，结果表明：通过改变淋洗液中乙醚含量可以将生育酚和生育三烯酚大部分分离：硝酸银硅胶柱层析分离生育三烯酚和生育酚的效果明显高于硅胶柱层析，其洗脱液中生育三烯酚可占V〓总量的90％以上，最高达98.47％。

This indicated effects of regulation on scenescence of fruit were through influencing the changes of internal ABA content. The relationship between different oxidative enzymes in the flesh and pericarp and ethanol accumulation in different maturity of 'brumal jujube' were investigated.

与果肉相比，冬枣果皮中含有较高的总酚、H_2O_2含量和较低的抗坏血酸含量；果皮中含有两种游离酚酸：儿茶酸、阿魏酸，显著低于果肉中的酚酸种类，贮藏末期果皮中的两种酚酸分别下降了80.36％和59.1％；而且果皮总酚含量与转红率呈显著负相关R=-0.88~(**，推测酚类物质的变化参与了冬枣果皮色泽变化。

HPLC data suggested that certain amount of gingerol was converted into shogaol in oleoresins by both SFE and ethanol extraction at the ratios of 25% and 62%, respectively.

经检测，SFE姜油树脂中姜酚与姜烯酚含量分别为11.07%和2.77%，姜酚降解率为25%，EE姜油树脂中姜酚与姜烯酚含量分别为0.9%和0.56%，姜酚降解率为62%。

To our knowledge, reverse phase of high performance liquid chromatography was firstly developed to analyze the metabolites of 7-tocopherol with ideal results. Meanwhile, Gas chromatography/Mass chromatography were used to analyze the structures of unknown metabolites of 7-tocopherol and a main unknown metabolite was identified as a side chain ω- hydroxylate of 7-tocopherol.The kinetic results of of 7-tocopherol reacted in the S9 of male SD-rat liver showed that the optimal time was 45 min; the optimal concentration of S9 5 mg/ml; the optimal concentration of NADPH 1 mM; and the optimal concentration of 7-tocopherol 8 μg/ml. The result of γ-tocopherol metabolized in the S9 of male SD-rat was the best; male Brazil turtle better; and male cobia worst.

本试验首次确立了γ-生育酚代谢物的RP-HPLC分析方法，结果理想且重现性好；用GC／MS对γ-生育酚的未知代谢物结构进行分析，判断其中一种主要的代谢物为γ-生育酚侧链初级羟基化代谢物；γ-生育酚在雄性SD-大鼠肝S9的代谢动力学表明，本实验条件下代谢反应的最佳时间为45min，S9浓度为5mg／ml，NADPH浓度为1mM，γ-生育酚浓度为8μg／ml；发现γ-生育酚在雄性SD-大鼠肝S9中代谢最高，雄性巴西龟次之，雄性军曹鱼最低。

Removal of tannin by washing grapeseeds with alcohol resulted in oil with low pigment content (K410 and K670 values).

葡萄种子的热处理，提高了葡萄种子油中主要维生素E单体γ-母育三烯酚和α-母育酚、β-母育酚、γ-母育酚的含量，降低了δ-母育酚的含量，葡萄种子去单宁后大大降低了生育酚的含量。

The morphology of virions seems to not be change after incubated with the paeonol by electron microscope. The regained infectivity of TMV recovered by dialysis from incubation with paeonol in vitro showed that the paeonol have not direct viricidal effect. The paeonol did not reduce infectivity when applied before TMV inoculation. The paeonol in low concentration can restrain the polymerization of TMV coat protein in vitro. The paeonol did not reduced infectivity of TMV-RNA in vitro. It is proposed that the paeonol inhibited TMV by binding with TMV coat protein to interfere with recognition of a host receptor essential for infection or by interfering TMV-CP polymerization in plants. The anti-TMV activity of low molecular weight chemicals extracted from Polygonum cuspidatum were determined.

丹皮酚与TMV混合，电镜下观察对粒体形态没有影响；TMV与丹皮酚混和后透析可恢复侵染力，表明丹皮酚对病毒粒体并没有直接毒害作用；预先用丹皮酚喷施叶面不影响病毒的侵染，表明丹皮酚未干扰TMV对叶片侵染位点的识别；丹皮酚在低浓度时可阻碍TMV-CP的体外聚合，对TMV-RNA并无体外抑制侵染作用，据此推测丹皮酚对TMV的抑制作用可能主要通过其与TMV-CP结合影响病毒粒体对叶片表面侵染位点的识别，或影响体内TMV粒体的脱衣壳或TMV-CP亚基的体内聚合。

A method for making Bisphenol A with a purity of more than 99.7% by reacting phenol and acetone using an acid catalyst, separating a BPA-phenol adduct by crystallisation and removing phenol from the adduct, in which involves continuous suspension crystallisation with a total dwell time of more than 4 hours in at least 3 crystallisers, by cooling first to 50-70 C in two parallel crystallisers and then to 40-50 C in a third crystalliser connected in series with the first two.; A method for the production of Bisphenol A with a purity of more than 99.7%, by reacting phenol with acetone in presence of an acid catalyst, separating a BPA-phenol adduct from the product mixture by crystallisation, filtration and washing, and removing the phenol from the adduct, in which stage involves continuous suspension crystallisation in at least three crystallisers connected in such a way that the mixture is first cooled to 50-70 C in two crystallisers in parallel and then cooled to 40-50 C in a third crystalliser in series with the first two, the total residence time of the mixture over all crystallisers being more than 4 hours.

描述用于生产纯度大于99.7％的双酚例如，双酚A(BPA的方法，这种方法包含苯酚和丙酮在有酸性催化剂参与的情况下反应形成一个包含双酚的产物混合物；通过结晶、过滤和洗涤从该产物混合物中以双酚/苯酚复合物的形式除去至少一部分双酚以提供双酚A/苯酚复合物晶体；并且从双酚/苯酚复合物晶体中除去至少一部分的苯酚以提供纯度大于99.7％的双酚；其中结晶过程包括连续的混悬液结晶，并且是在至少三个结晶装置中进行的，装置的排列使得产物混合物首先在结晶过程的第一阶段在第一个结晶装置和并联的第二个结晶装置中被冷却到50至70℃的温度，随后在结晶过程的第二阶段在与第一和第二个结晶装置下游串联的第三个结晶装置中被冷却到40至50℃的温度，并且其中产物混合物在结晶过程中的总驻留时间在4小时以上。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。