查询词典 uv

The binding properties of barbaloin to DNA were investigated by UV?

目的 探讨芦荟大黄素苷与DNA的相互作用。

The UV-Vis spectra of the super -π-conjugation compounds havesignificant changes between DMF solution and heptane solution, that is, themain bands have a stronger bathochromic shift in DMF.

研究了该超级-π-共轭体系的电子光谱的特征，它们在DMF溶液和正庚烷溶液中的紫外可见光谱有明显的变化，与正庚烷溶液相比，在DMF溶液中的主要吸收谱带有较大的红移。

For the investigation of LC cells, this research focus on the surface analyses by suing SEM, both of the morphologies caused by various photo-polymerization conditions (various intensities of UV light and the presence of electric fields) and the effects of morphology on the electro-optical properties will be surveyed. The beadlike morphology was obtained from photo-crosslinkable monomer B-ThBiPhC6Ac 2,5-Bis-[4-(6-acryloyloxy-hexyloxy –phenyl ]-thiophene.

照光聚合单体 B-ThBiPhC6Ac 2，5-Bis-[4-(6-acryloyloxy -hexyloxy-phenyl]-thiophene 在照光聚合后其高分子形成颗粒状的形态，而化学结构与前者相似的单体B-TrPhC6Ac 4，4''-Bis-(6-acryloyloxy-hexyloxy-m-terphenyl，仅后者的中心化学结构改为苯环，由其 SEM 图可以看出其高分子的形态改变为颗粒状和纤维状。

This thesis includes five parts as follows.1. The backgrounds and some relative concepts of this work are briefly introduced. The photochemistry of benzamides and compounds with thiourea functional group is also concisely reviewed.2. Total of fourteen benzamides with different substituted groups have been synthesized and structurally characterized. Better photoreaction time for that kind of compounds at given concentrations is confirmed by tracking its'UV spectrum and GC chromatogram. A representative dibenzophenone photoproduct has been determined by X-ray crystallography. The mechanisms of photoreaction of benzamide have been proposed.3. Total of seven N-chloro(phenylmethylenebenzenamines with different substituted groups and sixty-one thiourea derivatives have been synthesized and structurally characterized.

论文的主要内容如下：1、简要介绍本论文工作的研究背景，并对苯甲酰胺和具有硫脲官能团类化合物的光化学研究进展进行简要的总结。2、合成与表征了14个具有不同取代基的苯甲酰胺类化合物，利用紫外光谱和气相色谱确定了此类化合物较佳光照时间，测定了一个具有代表性光解产物的单晶结构，提出了苯甲酰胺类化合物的光反应机理。3、合成与表征了7个带有不同取代基的氯代苯甲酰亚胺中间体及61个硫脲衍生物，测定了两个具有代表性化合物的单晶结构。

Off-line HPLC coupled with MS gives the result that 4-chlorophenyl urea and 2-chloro-N-(4-chlorophenyl) benzamide are two photoproducts. In comparison with their retention times and UV specta with those of standards, some other photoproducts identified are 2-chloro benzamide, 4-chlorophenyl urea and 4-chloro aniline.

收集光解产物各级分，采用直接进样法在MS上测得其中的二种光解产物为对氯苯基脲和N-邻氯苯甲酰胺：通过与标样在同样HPLC条件下的保留时间和UV吸收光谱相对照，证明产物中存在有邻氯苯甲酰胺、对氯苯基脲和对氯苯胺等。

The results indicated that the UV coatings made from epoxy acrylate resin/TPGDA monomer by the weight ratio of 80/20, and 3% dosage of benzil dimethyl ketal photoinitiator had an excellent films properties such as hardness, tensile strength, gloss and weatherability, while it possessed a poor impact resistance and adhesion of films.

试验结果发现，以预聚合体/单体比例为80/20、单体种类为二丙烯酸三丙烯乙二醇酯、光引发剂Benzil dimethyl ketal添加量为3%调配而成之UV涂料，其涂膜硬度、拉伸强度、光泽度及耐候性等性质优良，但涂膜耐冲击性、附著性不佳。

The UV evidence demostrate the effect of deradating benzophenol under different conditions. The results showed that doping with Fe3+ at 0.01% had the highest degradation rate.

用UV监测反应，研究了不同反应条件下苯酚的降解效果，结果发现pH=3时，掺铁量为0.01％的硅胶附载二氧化钛薄膜的催化效果最佳。

We firstly introduced benzoazole (including benzimidazole, benzoxazole and benzothiazole) into the meso-positions of porphines and obtained five new porphyrins 36a-e. Their structures were characterized by 1H NMR, MS, UV-vis spectra and fluorescence emission spectra.

将苯并唑类基团(苯并咪唑、苯并噁唑和苯并噻唑)引入到卟吩中位，得到5个新型卟啉36a-e衍生物，并经核磁氢谱、质谱、紫外吸收光谱和荧光发射光谱表征了化合物的结构。

The different kinds of ultraviolet absorbers were reviewed, and the benzotriazole type UV absorbent were emphatically introduced.

综述了不同种类的紫外线吸收剂，着重介绍了苯并三唑类紫外线吸收剂。

The different kinds of ultraviolet absorber s were reviewed,and the benzotriazole type UV absorbent were emphatically introduced.

综述了不同种类的紫外线吸收剂，着重介绍了苯并三唑类紫外线吸收剂。

Females had the deep transformation not only in external image but also in intrinsic thought during the class struggle, females of this age were the contradictory mixture, were the modifiers and also were the kinds that were modified. They were in embarrassing position: or obtained the authority that can modify others by appeared as male soldiers, while loose the historical shackles, lost their own energetic sex; or appeared as who were forced to dissimilate themselves to accept alteration, while retained their energetic sex, lost the status that as historical main body.

女性的外在形象和内在思想在阶级斗争中都发生了深刻的变化，这个年代的女性是矛盾的混合体，是改造者，也是被改造者，或以准男性的战士的身份异化自己而获得改造他人的权力，在挣脱了历史枷锁的同时，失去了自己的精神性别；或以被解放者的身份被迫异化而接受改造，在保留了精神性别的同时，却失去了作为历史主体的身份。

Tom sent the basilisk into the school and several students were injured and finally, one was killed.

汤姆把蛇怪从学校放出后，有许多学生遭受攻击受伤，并最终有一个人死掉。那个学生就是桃金娘。