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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。

Methods 2000 women who desired to terminate pregnancy and operate artificial abortions without pain, were selected to anesthetize with propofol and fentanyl or propofol. The effect of analgesia and the extension degree of cervix were observed, and the time of anesthesia, the dosage of propofol, the time of operation, the time of patients to come around and leave hospital were recorded.

选择要求终止妊娠、自愿接受无痛人工流产术的妇女2 000例,应用丙泊酚复合芬太尼或丙泊酚静脉麻醉,观察镇痛效果、宫颈松弛程度,记录术中出血量、麻醉起效时间、丙泊酚总剂量、手术时间、苏醒时间、离院时间和人工流产综合征的发生情况。

They have close relationship as the former may provide new ideas and approaches for the later, while the later may be the simulation for the former and gives it helps in degradation products identification and mechanism explanation. It is necessary to choose a suitable system, which has high potential of treating EDs and close relationship to the natural environment, to combine the researches in the two aspects. Our group has been engaged in researches on the photochemical properties and application to water pollution control of different ferric species including Fe -OH complexes, Fe -polycarboxylate complexes, Ferric oxides and Fe -humic acid complexes. Fe -oxalate complexes system has higher efficiency than the other ferric species systems in photooxidation and degradation of organic compounds. This thesis is focused on the photodegradation of nine EDs estradiol (E2), estrone (E1), 17α-ethynyl estradiol (EE2), diethylstilbestrol , bisphenol-A , 4-Nonylphenol , 4-Octylphenol , di-n-butyl phthalate , and di (2-ethylhexyl) phthalate .

因此从处理效率和环境化学意义两方面考虑,结合本课题组在不同铁形态(包括Fe-OH配合物、Fe-多羧酸配合物、Fe氧化物、Fe-腐殖酸配合物等)的光化学特性及其在水污染控制中的应用方面较系统的研究工作基础,本论文选择了四类共9种典型的内分泌干扰物(雌二醇(E2)、雌酮(E1)、17α-乙炔基雌二醇(EE2)己雌酚、双酚A、壬基酚、辛基酚、酞酸二丁酯和酞酸二乙基己基酯),研究了它们在Fe-草酸盐配合物体系中的光降解效果,推测其降解机理,探索环境内分泌干扰物光氧化处理的新体系,同时为预测其在环境中的光降解行为提供了依据。

The Schiff base transitional metal complexes of various structures and their metallomicelles as peroxidase models for the phenol and phenolic derivant oxidation have been investigated. Some results are obtained from the studies:(1) the Schiff base transitional metal complexes have high catalytic activity for the phenol and phenolic derivant oxidation, and the structure of the complexes has a great effect on its catalytic activity;(2)a novel kinetic mathematical model for the complexes and their metallomicelles catalyzing the phenolic derivant oxidation has been established;(3) the feasibility and mechanism for the phenolic derivant oxidation catalyzed by the metallomicelle(as the mimetic model of peroxidase)have been discussed.

研究了冠醚Schiff碱金属配合物作为过氧化物酶的模拟模型对酚类物质氧化反应的催化作用,取得如下结果:(1)几种冠醚Schiff碱金属配合物对催化酚类物质氧化具有良好的催化活性,其中配体结构对其催化活性有较大的影响;(2)建立了金属配合物与表面活性剂形成的金属胶束催化酚类物质氧化反应的动力学数学模型;(3)探讨了金属胶束模拟过氧化物酶催化酚类氧化反应的可行性及其机理。

spectrophotometric method with phenol disulfonic acid ; ultraviolet spectrophotometer ; nitrate nitrogen ; comparison

本文通过对常用的酚二磺酸光度法和紫外分光光度法进行实验比对,同时调查云南省内两种分析方法考核的情况,从而找出两种方法的优缺点,供分析人员在实践中借鉴。l原理1.1酚二磺酸光度法测定的原理方法依据:GB7480一87《水质硝酸盐氮的测定酚二磺酸分光光度法》。用浓硫酸与苯酚作用生成酚二磺酸

Comparative studies of electroactive components and voltammetric behaviors different between the MCF-7 cell without estrogen and the MCF-7 cell with estrogen showed that the concentration of the guanine and xanthine bases in the cytoplasm decreased, which resulted in the decrease of secretion ability of the MCF-7 cell without estrogen decreased, and these result in the decreasing of the voltammetric response of the cells, impling that the cell vaibility decreases.

结果发现,去激素MCF-7细胞质中的黄嘌呤和鸟嘌呤浓度降低,使细胞分泌黄嘌呤和鸟嘌呤能力降低,导致细胞和细胞质的伏安信号减弱,说明去激素MCF-7细胞的活性下降;研究了标准雌激素雌二醇、环境雌激素壬基酚和双酚A对去激素培养的MCF-7细胞增殖的影响,发现其均存在剂量-效应关系和时间-效应关系,并且雌激素效应由大到小的顺序为:雌二醇>壬基酚>双酚A;同时使用3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide法验证了电化学法评价雌激素效应的可靠性。

We studied the fluorescent capability of Binolate lanthanide complexes. Thefluorescent analysis shows that both ligand and complexes exhibit luminescence. Insolid state and solution, they have the different luminescence mechanism, intensity andcolor. So we can synthesize the complexes of dissimilar fluorescence performance bychanging the state and solvent polarity. According to the literatures, the complexes playan important role in luminescence material and probe with the development of theinformation technique.

对合成的八个邻萘酚稀土配合物进行发光性能研究,通过荧光光谱分析显示,配体和配合物都能够发出荧光,并且在固体状态和溶液中的发光机制、光强度及发光颜色都不同,所以通过改变邻萘酚稀土配合物的状态以及所选溶剂极性的不同,可以得到荧光性能不同的邻萘酚稀土配合物;根据查阅的文献可知,这类配合物在发光方面的应用很少,所以在当前信息显示技术高速发展的今天,邻萘酚类发光稀土配合物在发光器件、荧光探针等材料的研究领域当中不仅具有理论意义还有实际的应用价值。

In this study,the changes of phenolic compounds ,phenylalanine ammonia-lyase,peroxidase and polyphenol oxidase activities during malting(including steeping,germination and kilning) with three domestic barley varieties were investigated,and the relationships between changes of phenolic content and enzyme activities and malting technics were analysed.

研究了3种典型国产啤酒大麦在麦芽制造过程中酚类物质及其相关酶类(苯丙氨酸解氨酶:phenylalanine ammonia-lyase,PAL、过氧化物酶:peroxidase,POD和多酚氧化酶:polyphenol oxidase,PPO)的变化,分析了制麦过程中酚类物质含量的变化与酶活力和制麦工艺之间的关系,讨论了大麦发芽过程中苯丙氨酸解氨酶在合成酚类物质方面的作用及过氧化物酶对根芽生长和制麦损失的影响。

Phenolic compounds and related enzymes in barley influence its growth and brewing processes.In this study,the changes of phenolic compounds,phenylalanine ammonia-lyase,peroxidase and polyphenol oxidase activities during malting(including steeping,germination and kilning) with three domestic barley varieties were investigated,and the relationships between changes of phenolic content and enzyme activities and malting technics were analysed.The functions of PAL on biosynthesis of phenolic compou...

研究了3种典型国产啤酒大麦在麦芽制造过程中酚类物质及其相关酶类(苯丙氨酸解氨酶:phenylalanine ammonia-lyase,PAL、过氧化物酶:peroxidase,POD和多酚氧化酶:polyphenol oxidase,PPO)的变化,分析了制麦过程中酚类物质含量的变化与酶活力和制麦工艺之间的关系,讨论了大麦发芽过程中苯丙氨酸解氨酶在合成酚类物质方面的作用及过氧化物酶对根芽生长和制麦损失的影响。

There have been massive researches on improving the properties of protein in recent years, this article emphatically begin with the interaction between tea polyphenol and protein (egg albumen protein, soybean protein isolated, whey protein concentrated, bovine serum albumen), study their functional rules and that under the changed food processing environment (the pH value, salt ion concentration, sucrose density), and then apply the interaction rules into two different kinds of cakes for improving the technology of their production, aiming for provide the new mentality and method on improving the properties of protein as well as speed up the application of tea polyphenol.

本文着重从茶多酚与蛋白质的相互作用着手,研究了茶多酚及其主要单体组分对蛋清蛋白、大豆分离蛋白、乳清浓缩蛋白及牛血清蛋白的功能特性的影响规律,同时也探讨了环境因素(pH值、盐离子浓度、蔗糖浓度)与茶多酚协同作用对蛋白质这些功能特性的影响规律,并且初步应用了这种相互作用规律到两种不同工艺蛋糕的生产中来,目的是为蛋白质功能特性的改善提供新的思路和方法以及加快茶多酚在食品中的应用。

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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。

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