光

Bis(3,4-dicarboxy-phenyl) hexafluropropane dianhydride (6FDA)/pyromellitic dianhydride and m-phenylene diamine, and then a post-azo-coupling reaction of p-Nitrophenyldiazonium fluoborate toward the arylamine ring of PAAs.

首次对侧链型PI极化膜的热光性能展开研究，探讨化学结构和聚集态结构对其热光系数及其偏振依赖性的影响规律，寻求控制和优化热光性能的方法。

Photochromic rate constant of G1 in CHCl3 and THF was 10－1 s－1, but that of photochromic liquid crystalline polysiloxanes containing azophenyl moieties was 10－8 s－1, thus the photoresponsitive rate of liquid crystalline dedrimer G1 is 107 times larger than that of the latter.

G1的光致变色反应速率常数的数量级为10－1 s－1，而含偶氮基元液晶聚硅氧烷的光致变色反应速率常数的数量级为10－8 s－1，因此液晶树枝状大分子的光响应速率比后者快107倍。

Photochromic reaction rate constant of G2 in CHCl3 and THF was 10－1 s－1, but that of photochromic side-chain polysiloxanes containing azophenyl moieties was 10－8 s－1, thus the photoresponsitive rate of the liquid crystalline dendrimer G2 is 107 times larger than that of the latter.

G2的光致变色反应速率常数的数量级为10－1 s－1，而含偶氮端基侧链聚硅氧烷的光致变色反应速率常数的数量级为10－8 s－1，因此，液晶树枝状大分子的光响应速率比后者快107倍。

Is a small freshwater alga suitable to live in an environment where both water temperature and light intensity is relative low. The optimum water temperature of 15℃ and the optimum light intensity of 35μmol/m^2s~45μmol/m^2 s are needed for photosynthesis of Batrachospermum longipedicellatum.

其光合作用的最适水温为15℃，光合作用的适宜光强为30μmol/平方公尺s~50μmol/平方公尺s，最适光强度为35μmol/平方公尺s~45μmol/平方公尺s，40μmol/平方公尺s光合速率最高峰，为其饱和光强。

Light comes to the soul through God's word, through His servants, or by the direct agency of His Spirit; but when one ray of light is disregarded, there is a partial benumbing of the spiritual perceptions, and the second revealing of light is less clearly discerned.

真光来到人心里，有的是藉著上帝的仆人，有的是藉著上帝的话，或由上帝直接的代表圣灵；但人见了一线真光若置之不理，则他属灵的知觉就会麻木，当真光再次显现时，他就不能像第一次那么认得清楚了。

Their specific optical rotation is higher than 1, 1'-binaphthyl monomer in concentrated sulfuric acid, and increased with the excess enantiomer percentage of monomers increased, but the direction of rotation is not same with their monomer.

它们的结晶度较低，在浓硫酸中的旋光活性远大于联萘单体，其旋光值与聚合物手性单元的过量比例成线性关系，但旋光方向却与单体不同。

The tryptophan residues play important roles in DNA photoreactivation catalyzed by CPD photolyases. We have investigated the action mechanism concerning Trp in DNA photoreactivation, and obtained the results as follows: 1 We proposed a mechanism of photosensitized splitting of CPDs by Trp and Trp-containing peptides. 2 Quantum yields of splitting of the model compounds that a Trp linked covalently a CPD were obtained under 290 nm light in various solvents, these values changing with solvent, range from 0.01 to 0.5. 3 Utilizing pulse radiolysis technique, splitting processes were observed in aqueous solution of the CPDs with hydrated electron and some oxidative species (such as hydroxyl radical, bromic radical and azide radical), and obtained their rate constants. In the case of interaction between CPD and hydrated electron, splitting of the CPD anion, and pyrimidine anion transfer an electron to FAD or Rf, were observed. The process rate was slower one order more than that in photolyase. Minor, but highly mutagenic UV-light-induced lesions are (6-4) photoproducts, which are repaired by (6-4) photolyases. These enzymes, discovered in 1993, are not well characterized and their mechanism is still under investigation.

我们研究它的作用机理，获得以下结果：1）建立了色氨酸及其肽对嘧啶二聚体光敏化裂解的直接修复作用机理模型；2）获得了色氨酸共价键连接于嘧啶二聚体的化合物在多种溶剂中290nm光辐照裂解的量子效率，其值随溶剂而变化，范围在0.01-0.5；3）运用脉冲辐解观察到嘧啶二聚体与水合电子和一些氧化性的自由基作用裂解过程，得到相应速率常数；对二聚体与水合电子作用发生裂解以及向FAD返还电子的过程进行了体外模拟；4）（6-4）光解酶的作用机理中一个关键假定是氧杂环丁烷中间体在接受电子后能自发裂解，恢复二嘧啶的结构。

The primary research works are summarized as follows:(1) Using resonance-enhanced multiphoton ionization scheme, we investigated the photodissociation of some alkyl bromides C_2H_5Br, n-C_3H_7Br, n-C_7H_(15Br, and bromobenzene (C_6H_5Br) near 234nm and 267 nm.

测出了这几种含溴化合物在不同波长下光解产物Br~*和Br的分支比N/N ，从头计算结果显示这几种含溴化合物的光解产物分支比随光解波长的变化与其激发态势能面的结构有关。

Microscope observations: positive staining for iNOS was observed in inflammatory cells, macrophages, kuffer cells and hepatocytes, especially at the canalicular membrane.

其中 LPS发热组3，6，gb iNOS阳性产物的整合光密度值与％阳性面积均高于正常对照组iNOS的整合光密度值和％阳性面积（P＜o.0门，且以LPS发热组6h的整合光密度值及防阳性面积为最大。

The light insensitivity type includes Ipomoea batatas 'Aurea' and Epipremnum aureum. The light sensitivity type includes Celtis julianae 'Aurea', Gleditsia triacanthos 'Sunburst', Sophora japonica 'Aurea', Physocarpus opulifolius 'Aurea', Cornus alba 'Aurea', Ligustrum lucidum 'Aurea', Spiraea×bumalda'Goldmound', Berberis thunbergii 'Aurea', and the light high-sensitivity type includes Sambucus glauca 'Aurea', Caryopteris×Clandonensis 'Worcester Gold', Forsythia koreana 'Suwon Gold'.

光强不敏感型的有金叶红薯，金叶绿萝，二者均起源于热带；光强敏感型的有金叶珊瑚朴，金叶皂荚，金叶国槐，金叶风箱果，金叶红瑞木，金叶女贞，金山绣线菊，金叶小檗，绝大多数起源于暖温带；光强高度敏感型的有金叶接骨木，金叶莸，金叶连翘，起源于温带。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。