黄

Oxonic acid, an uricase inhibitor used in establishing hyperuricemia animal model, can disturb current uric acid biochemical assay.

本部分研究选用国产C_(18)色谱柱，探索同时检测次黄嘌呤、黄嘌呤、尿酸、尿囊素和肌酐的方法。

The flavonoid substance being in extract of cyclocarya paliurus possesses the functions of reducing blood sugar, reducing blood pressure and reducing blood fat.

青钱柳提取物中类黄酮等物质有降血糖、降血压、降血脂功能，将青钱柳提取物，配以风味剂，辅助物质，并加入海藻酸钠、羧甲基纤维素、琼脂、黄原胶中两种或两种以上物质作为稳定剂，可以较长久地保持青钱柳提取物中降血糖、降血压、降血脂物质的稳定性。

The highest total flavonoid rate was 1.127%. An all-round evaluation for the antioxidant activity of the flavonoids extract from zizania-bract was carried out with that of ascorbic acid as the control. The evaluation indexes included the cleanup rate of the polyphenolic extract towards superoxidized anionic radicals, hydroxyl radicals, DPPH free radicals, the deoxidizing ability, and the antioxidant activity towards the peroxidize of lipids and edible oils.

采用抗坏血酸作为对照，全面测定了茭白苞叶总黄酮对超氧阴离子自由基、羟基自由基、DPPH自由基的清除率，以及还原能力、抗脂质过氧化活性和对食用油脂的抗氧化性的影响，结果表明，白苞叶中的总黄酮是一种有开发价值的天然抗氧化剂。

Four main parts were included in this dissertation:(1) Precise measurement of Gvalues of hydrogen peroxide in the reactions of flavonoids with superoxide anion andα-hydroxy ethyl peroxyl radicals;(2) Kinetic studies of the reactions of typicalflavonoids with α-hydroxy ethyl peroxyl radicals;(3) HPLC-MS analysis of theproducts after γ-irradiating rutin ethanol solution saturated with air, a reactionmechanism was proposed;(4) Preliminary investigation on the reaction between rutinand peroxynitrite.

本论文的内容主要包括四部分：(1)黄酮类化合物在与超氧阴离子自由基以及α-羟乙基过氧自由基反应的过程中生成的过氧化氢G值的准确测定；(2)几种典型的黄酮类化合物与α-羟乙基过氧自由基的反应动力学研究：(3)空气饱和芦丁乙醇溶液经γ-辐照后产物的HPLC-MS分析及反应机理推测；(4)对芦丁与过氧亚硝酸盐的反应做了初步的探索。

The results of cluster analysis showed that the samples could be clustered reasonably into three groups and the elemental distribution characteristics are related to the habitats of Phellodendron chinense Schneid..

结果川黄柏的特征元素为Al，Ca，S，Fe，Mn，Ni，Pb，Cd，不同产地川黄柏的微量元素呈现明显的地域性差异。

The paper is part of the research on tradiontial Chinese medicines modernization in our laboratory. The main work is the study on the constituents of Phellodendron amurense Rupr.indigenous to Liaoning Province China.

本文属于我研究室中药现代化研究工作的范畴，对辽宁道地药材关黄柏（芸香科植物黄檗Phellodendron amurense Rupr。

objective:to study the effects of mice and rats' gastrointestinal frnction on phellodendron amurense and its different processed products.methods:decoction of phellodendron amurense and its different processed products were fed to mice and rats,to observe the gastric emptying and gastrointestinal movement of mice;to determined the gasteic juice's acidity of rats by titration,and the pepsin was measuerd by mett's method.

摘 要：目的：研究黄柏及其不同炮制品对小鼠及大鼠胃肠功能的影响。方法：以黄柏及其不同炮制品的提取物灌胃，观察小鼠胃排空及小肠推进情况；观察不同药物对大鼠的胃液分泌情况的影响，用滴定法对大鼠的胃液的总酸度进行测定，用改良mett氏法对大鼠的胃蛋白酶活性进行测定。

Deoxybenzoin(3) was prepareded by using the resorcinol and substituted phenylacetic as starting meterials in microwave-mediated.Then the compound(3) was reacted with acetic anhydride to produce(4).The compound(4) was hydrolyzed to convert compound(5) in the acid-mediated. The compound(5) was reacted with the 1,2-dibromo-ethane and 1,3-dibromo-propane in refluxed condition with acetone as solvent to give(6) or(7),respectively.Lastly,the title compounds were synthesized by refluxing(6) or(7) with 2-methyl-benzimidazole and potassium carbonate in acetone solution.

以取代苯乙酸和间苯二酚为起始原料，用微波辐射法合成脱氧安息香(3)，(3)与乙酸酐缩合生成2-甲基-7-乙酰氧基异黄酮(4)，(4)在酸性条件下水解生成相应的异黄酮(5)，化合物(5)分别与1，2-二溴乙烷和1，3-二溴丙烷反应生成(6)和(7)，化合物(6)和(7)再分别与2-甲基苯并咪唑偶合生成目标化合物。

This thesis is constituted by four parts: In the first part a summarization is given on the main total synthetic methods of isoflavones, for example, deoxybenzoin method which generally involves two steps wherein a phenol is reacted in the presence of a Lewis acid with phenylacetic acid to generate an intermediate deoxybenzoin which is then cyclized with a one carbon electrophile.

本论文主要工作包括四部分：第一章综述了近年来全合成异黄酮的主要方法：脱氧安息香法，是以多羟基苯酚与苯乙酸或苯乙腈在Lewis酸存在下，反应生成中间体脱氧安息香，然后再与亲电碳试剂进行关环反应生成异黄酮。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl-2-acctonc, phenylacetic acid, 1-phenyl-2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、3，4-亚基二氧苯基-2-丙酮、苯乙酸、1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐