环丁烷

环丁烷型嘧啶二聚体（Pyr<>Pyr）是太阳光中紫外线造成DNA损伤的主要光化学产物。

Cyclobutane pyrimidine dimers ( Pyr < > Pyr ) are the major DNA photoproducts induced by the UV radiation .

目的：环丁烷嘧啶二聚体（CPDs）是细胞受紫外线损伤后产生的特征性光产物之一。

Objective Cyclobutane pyrimidine dimers ( CPDs ) are characteristic photoproducts in cells after ultraviolet irradiation .

DNA光复活酶（或称光解酶）能够利用可见光裂解二聚体的环丁烷环而修复DNA。

Photoreactivating enzyme ( DNA photolyase ) repairs DNA by utilizing the energy of visible light to break the cyclobutane ring of the dimer .

八氟环丁烷等离子体聚合物结构的ESCA和IR表征

ESCA and IR characterization of plasma-polymerized octafluorocyclobutane structure

绿豆幼苗UV-B敏感性与环丁烷嘧啶二聚体累积的关系

Cyclobutyl Pyrimidine Dimer Accumulation in Ralation to UV-B Sensitivity in Mung Bean Cultivars

目的观察中波紫外线（UVB）辐射后成纤维细胞（FB）DNA光产物环丁烷嘧啶二聚体（CPDs）产生和清除情况及表没食子儿茶素没食子酸酯（EGCG）和黄芩甙的干预作用。

Objective To investigate the production and removal of cyclobutane pyrimidine dimers ( CPDs ) induced by UVB irradiation and intervention effect by epigallocatechingallate ( EGCG ) in human fibroblasts .

【目的】明确绿豆品种间UV-B敏感性的差异与环丁烷嘧啶二聚体（CPDs）累积间的关系。

【 Objective 】 The purpose of the experiment is to reveal the relationship between cyclobutyl pyrimidine dimers ( CPDs ) accumulation and UV-B sensitivity in mung bean cultivars .

实验结果部分支持环丁烷嘧啶二聚体（CPD）、6-4光产物（6-4PP）和Dewar异构体的形成。

The experimental results partly supported the formation of several types of dimeric lesions between adjacent pyrimidine bases , most notably cyclobutane pyrimidine dimers ( CPD ), 6-4 photoproducts ( 6-4PP ) and the Dewar valence isomers .

目的改进溴甲基环丁烷的合成方法。

Aim To improve the synthetic procedure of bromomethyl cyclobutane .

带有四个不同芳基的环丁烷的合成、结构及光化学性质

Synthesis , Structure and Photochemical Properties of Cyclobutanes Containing Four Different Aryl Groups

含全氟环丁烷环可溶性聚酰亚胺的合成与表征

Synthesis and characterization of soluble polyimides containing perfluorocyclobutane rings

以1，2，3，4-环丁烷四羧酸二酐为原料合成了一个系列三种聚酰亚胺取向材料。

A series , three polyimide alignment materials were synthesized from , 1,2,3,4-cyclobutanetetracarboxylic dianhydride .

糖苷键[合]，苷键[合]环丁烷与氟化氢形成氢键络合物的从头算研究

An ab initio MO study of the hydrogen bond complex between cyclobutane and hydrogen fluoride

顺或反2,4-二甲基硫代环丁烷；

Cis or trans 2,4 dimethylthietane ;

溴甲基环丁烷的合成方法改进

Improved synthesis of bromomethyl cyclobutane

1,2,3,4-四（6，′7′，-二甲基苯并恶唑）环丁烷光谱特性研究

Study on the Spectra Properties of 1 , 2 , 3 , 4-Tetra ( 6 ′, 7 ′ - dimethyl-benzoxazolyl ) cyclobutane

环丁烷主要成蝶式构象存在，其中两翼间的二面角大约为20°。

Cyclobutane exists predominantly in a " butterfly " conformation , in which the dihedral angle between the two wings is about 20 ° .

环丁烷与氟化氢形成氢键络合物的从头算研究三乙胺三（氟化氢）在有机合成中的应用

AN AB INITIO MO STUDY OF THE HYDROGEN BOND COMPLEX BETWEEN CYCLOBUTANE AND HYDROGEN FLUORIDE Advances in the Application of Triethylamine Tris ( hydrofluoride ) to Organic Synthesis

紫外光照射可导致生物体产生两种损伤：（6-4）光产物和环丁烷嘧啶二聚体。

UV radiation induced two major classes of pyrimidine dimmer s : the pyrimidine ( 6-4 ) pyrimidone photoproduct ( 6-4 product ) and the cyclobutane pyrimidine dimmer ( CPD ) .

本文以八氟环丁烷为单体，采用等离子体聚合法将亲水性硝酸纤维素微孔膜改性，制得疏水硝酸纤维素微孔复合膜。

In this paper , the hydrophobic cellulose nitrate microporous composite membranes have been obtained by modification of hydrophilic cellulose nitrate microporous membranes by the use of plasma polymerization of octafluorocyclobutane .

本项目生产八氟环丁烷的目的一是可以解决六氟丙烯项目化工投料试车的原料问题，二是可以丰富我厂的产品品种、提高六氟丙烯项目的综合经济效益。

The purposes of manufacturing octafluorocyclobutane are firstly to solve feedstock problem during the commissioning of hexafluoropropylene project , and secondly to expand product mix in the plant and improve comprehensive economic benefits of the project .

本实验应用碱性凝胶电泳技术探讨了活性氧自由基在紫外线照射人体皮肤形成环丁烷嘧啶二聚体中的作用。

To define further the role of reactive oxygen species ( ROS ) in ultraviolet radiation ( UV ) induced the formation of Human skin 's CPD , experiments were performed using alkaline gel electrophoresis technique . Purified DNA was incubated with antioxidants .

并用MM2法计算了一元取代环已烷、丁烷、1,1-二甲基-2-取代环已烷等的前优化构象的立体能，同时用计算结果解释和查明了分子内范德华相互作用的立体化学规律。

The values of potential energy of the proximate excellent conformations of one-substituted cyclohexane , butane , 1,1-ditoluene-2-substituted cyclohexane were computed by the method of MM_2 . The interactive rules of stereochemistry of the Van der Waals force between molecules were explained and confirmed by the relative results of computation .