查询词典 phenol-phthalein

In this study, it is proved that traditional TCA/Acetone method and phenol extraction method is not efficient enough to extract phosphoprotein from rice leaves.

本研究证实，在传统的TCA/丙酮沉淀法和苯酚抽提法都不能高效的从水稻叶片中提取磷酸化蛋白。

In the titania-modified MCM-41, although the titania were in an amorphous state and in tetrahedral coordination rather than octahedral coordiantion, which exsists extensively in crystalline titania, they exhibited relative high photocatalytic activity for the photodecomposition of phenol.

所合成的无定形的氧化钛修饰MCM-41的光催化剂显示了较高的催化活性。

The laser flash photolysis of phenol has ben performed for the first time.

利用激光光解技术对废水中苯酚的降解机理进行了详细研究。

The catalytic performance of hydrotalcite and pillared hydrotalcite with different anions were tested in transesterification of dimethyl carbonate with phenol.

测试了水滑石和不同org-LDHs对碳酸二甲酯与苯酚酯交换反应的催化性能。

In an earlier stage, phenol-formaldehyde-tannin adhesives were synthesized using tannin extracts from Pinus pinaster bark.

在早期阶段，苯酚甲醛单宁粘合剂使用合成鞣质提取马尾松松树树皮。

These PUFT adhesives were prepared by copolymerisation of Pinus pinaster bark tannins with phenol-urea-formaldehyde prepolymers.

这些PUFT粘合剂，制备了copolymerisation松松树树皮单宁与酚醛脲醛预聚物。

We are the only manufacturer of Piperonal through rauvite natrium oxidizing production low, and its annual output is 120 tons. We are also the only manufacturer of Raspberry ketone through phenol production line, and its annual output is 200 tons. The curatorial intermediate, F101 Composite resin rubber sulfidizer, and high molecular materials are new and high-tech products first developed in China with the quality reaching international level. The leather chemical product-basic chromium sulphate has won the Scientific and Technological Reward of Suzhou City, and has been taken as reference for The Ministry of Science and Technology of The PRC formulating standard.

年销售8000万元，其中香料产品洋茉莉醛用红矾钠氧化法生产线，目前国内独此一家，年产量达120吨；覆盆子酮用苯酚路线生产的产量达200吨国内独此一家；医药中间体，橡胶类F101复合树脂硫化剂，高分子材料类属高新技术产品，国内首创，质量达到国际水平；皮革化工"碱式硫酸铬"等获得苏州市科技成果奖，并参与国家技术部制定标准。

The experimental results show that the content of SiC in RBSC increases with carbon content while α-SiC is chosen as a filler. However, the residual carbon would appear in specimens when the carbon content exceeds 30% by weight. Using carbon felt, the reaction-formed SiC particles are small and uniform in size and distribution. However, when carbon felt is impregnated with phenol resin, the reaction-formed SiC is nonuniform in size and distribution. X-ray diffraction shows that the fabricated RBSC is composed of α-SiC,β-SiC, and free Si. The polytype of SiC is related to the reaction-heat during sintering.

结果表明：选用α-SiC+C粉的混合物作为生坯，SiC相的体积分数随生坯中wC的增加而增加，但过大的wC将使硅化后的试样出现残碳；选用碳毡作为生坯，反应烧结碳化硅的显微组织特点是C／Si反应生成的碳化硅颗粒均匀细小，并呈线状分布在游离硅中；浸渍过树脂的碳毡硅化处理后的显微组织特点是反应生成的碳化硅颗粒粗大且呈不均匀分布。X射线衍射结果也表明，反应烧结碳化硅陶瓷由游离Si、α-SiC、β-SiC组成，试样中不同晶型碳化硅的出现与C／Si反应的放热过程有关。

The chemical composition research aspect literature report are extremely few: According to reports, the root of Rosa davurica pall includes the lactone, the tanning substance, the return to original state sugar, the total lucoside, the flavanone, the phenol class, the biological alkalis, the protein, the anthraquinone equi com ponent, moreover ,the total polysaccharide is the even polysaccharide which is composed by the fructose.In 1999, for the first time from puncture the root in the alcohol extraction to sep arate Oleanic acid. And used the double wave length thin layer scanning method to determine the uneven pillar tartaric acid in to puncture in the root ontent.

化学成分研究方面文献报道极少：据报道，山刺玫根中含有内酯、鞣质、还原糖、总苷、黄酮、酚类、生物碱类、蛋白质、蒽醌等成分，而且山刺玫根中总多糖是由果糖组成的均多糖。1999年，首次从刺玫根的乙醇提取物中分离出齐墩果酸，并采用双波长薄层扫描法测定了齐墩果酸在刺玫根中的含量。

This complex reaction was phenolic electronic substitution reaction, so reaction rate was related with the positive electricity of pro-electronic reagent, as well as the form of aromatic hydrocarbons. Rates of chlorination of phenol and 2-monochlorophenol were faster in alkaline water than that in weak acid water, so 2,4-dichlorophenol and 2,4,6-trichlorophenol formation concentrations increased with the reaction time.

该复合反应属于酚类电子取代反应，反应速率与亲电子试剂的阳电性以及芳香烃的形式有关，碱性水环境中氯取代苯酚和2-一氯酚的速率要快于在弱酸性水环境；随着pH的升高，2，4-DCP和2，4，6-TCP的生成浓度也不断增加。

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。