鸟嘌呤

Their detection limits of adenine (S/N=3) of 2.0×10(^-7)mol/L and 1.7×10(^-7)mol/L, respectively.

腺嘌呤和鸟嘌呤的检测限分别为2.0×10(^-7)mol/L和1.7×10(^-7)mol/L。

The basic concept is that the DNA bases, adenine, cytosine, guanine and thymine, could be distinguished in terms of their conductivity properties.

那个 基本概念是，DNA碱基，腺嘌呤，胞嘧啶，鸟嘌呤和胸腺嘧啶的，可区分的条件它们的导电性能。

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。

Objective To explore the relationship between postmortem interval and degradation of Hypoxanthine guanine phosporibosyltransferase mRNA in the kidney of rats.

目的：探讨大鼠死后肾次黄嘌呤鸟嘌呤磷酸核糖转移酶mRNA降解情况与死亡时间的关系。

The detection sensitivity of guanine and adenine was improved greatly by activating the glassy carbon electrode electrochemically.

通过对电极的电化学活化，其测定鸟嘌呤和腺嘌呤的灵敏度可以大大提高。

Mainly includes the adenine, the guanine, the thymine and the cytosine 4 kind of basic groups.

主要含有腺嘌呤、鸟嘌呤、胸腺嘧啶和胞嘧啶4种碱基。

There are just four kinds: adenine, thymine, guanine and cytosine.

只有4种：腺嘌呤、胸腺嘧啶、鸟嘌呤和胞核嘧啶。

During thispaper, lots of purine derivatives are synthesized from the material of guanine.

本论文以鸟嘌呤为原料制备出多种嘌呤衍生物，对影响反应的多种因素进行了较为系统的研究。

The proposed method can be used to estimate the guanine and adenine contents in DNA with good selectivity in a linear range of 0.25 μg 〓～5. 0μg〓.

该方法可以用来测定DNA中鸟嘌呤和腺嘌呤的含量，具有很好的选择性。

Chapter 5 A new method for the simultaneous determination of adenine and guanine in DNA extracts using MEKC with indirect LIF detection was proposed.

第五章建立了一种用于同时测定DNA中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。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。