查询词典 coumarin

Noviose and coumarin have a little antitumor activity but it is weaker than novobiocin.

化合物2和化合物3具有抗肿瘤活性，但比新生霉素弱。

There is little to no coumarin in "true" or Ceylon cinnamon ( C. zeylanicum ), but Dr.

而食用"真"肉桂，或者说锡兰肉桂时，这种影响就几乎不存在了。

At present, the widely used dyes in biological analysis are rhodamine, BODIPY, cyanine, coumarin and so on.

目前，用于生物分析的常用染料主要有：罗丹明类，花菁类，BODIPY类及香豆素等。

Methods Analysis the results of 230 cases PT and PT INR in variable age、 sex、coumarin quantity and years of surgery.

对不同华法林用量、性别、年龄以及术后病程的230例患者的PT及PT INR值检测结果进行分析，所用仪器及试剂均符合国际标准。

Fig also with other anti-cancer compounds such as formaldehyde and coumarin meat dish.

无花果还含其他抗癌化台物例如荤甲醛和香豆素。

The Coumarin was used as inner standard.

FA用内标法定量。

Seven 7-styrylcoumarins were synthesized by palladium-catalyzed Heck reaction of coumarin diazonium salts with substituted styrenes.

采用钯催化香豆素重氮盐的Heck反应合成了七个7-位苯乙烯基取代香豆素化合物，该方法反应条件温和且收率较高。

Because of the property of donative electron of the methoxy group and the participation of the carbonyl group of the coumarin into the complexation proces...

研究表明，由于在香豆素的6 位上引入一个甲氧基，对应的主－客配合物的稳定常数较（7－甲氧基－4－亚甲基）香豆素基－单氮杂－ 18－冠－6（ MMC－ MAC（O5））与阳离子配位的稳定常数又有所增高。

The dye Eosin and Coumarin mixture is used to sensitize nanocrystalline porous TiO2 films.

采用曙红与香豆素混合的方法，配制成敏化剂修饰纳米晶薄膜。

Based on the previous literatures, the following major innovation works were carried out in this dissertation:(1) The derivatization reaction conditions of ephedrine and pseudoephedrine with sensitive derivation reagent in aqueous system were studied and two new methods were developed for the assay of them by microemulsion electrokinetic chromatography and micellar electrokinetic chromatography with LIF detection. The sensitivity and analysis times were greatly improved compared with the previous reports;(2) A new method of CZE with indirect LIF detection was developed for the simultaneous determination of six coumarin compounds (esculin, esculetin, isofraxidin, genistein, naringin and sophoricoside) with fluorescein as the probe. The proposed method enlarges the application range of LIF detector, and provides new approach for the analysis of certain compounds difficult to derivatize;(3) Based on the above research, an MEKC with indirect LIF detection method for the simultaneous determination of adenine and guanine in DNA extracts from fungus, maize and soybean was established;(4) A new method for the investigation of the complexes formed between human serum albumin and ampicillin sodium under the simulated physiology conditions using laser light scattering technique was developed.

该论文在综述前人工作的基础上，开展了如下未见文献报道的创新性的研究工作：(1)使用灵敏的衍生试剂对麻黄碱和伪麻黄碱在水体系中的衍生反应条件进行了系统研究，建立了微乳电动色谱-激光诱导荧光检测法和胶束电动色谱—激光诱导荧光检测法测定麻黄碱和伪麻黄碱的灵敏分析新方法，与以前的报道相比，灵敏度和分析时间均有很大改善；(2)使用荧光素钠作为背景荧光试剂，建立了同时分析测定六种黄酮类化合物(秦皮甲素、秦皮乙素、异秦皮定、染料木素、柚皮苷和槐角苷)的毛细管区带电泳—间接激光诱导荧光检测新方法，扩大了激光诱导荧光检测的应用范围，对难衍生化合物的分离分析提供了一种新思路和新途径；(3)以荧光素钠作为背景荧光试剂，建立了一种用于同时测定食品提取DNA中的腺嘌呤和鸟嘌呤含量的胶束电动色谱—间接激光诱导荧光检测新方法；(4)用动态和静态激光散射法研究了模拟生理条件下人血清白蛋白与氨比西林钠盐相互作用所形成的复合物，为药物分子与蛋白质的相互作用、药代动力学等的研究提供了一种新思路。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。