查询词典 mutagenic

Adlay is a grass crop which has been used in traditional Chinese medicine and also as a nourishing food. It has been shown to posses anti-allergic, antimutagenic and hypolipemic effects. BaP is a known environmental pollutant which causes oxidative stress, carcinogenic and mutagenic compound. TBT is widely used as antifouling paints, agriculture biocides, and plastic stabilizers around the world, resulting in great pollution problem in aquatic environments.

薏苡仁属於草本植物，已经被使用在中药方面且也是一种食物，具有抗过敏、抗突变及降血脂的能力；苯骈芘是已知会提升氧化压力具有致癌及致突变性的环境污染物；而三丁基锡是被广泛添加在抗海洋生物的油漆、农业的杀虫剂及塑胶稳定剂里的成分，其在近年对海洋水生环境造成了相当大的污染问题。

The study found gaseous aliphatic aldehydes , which are carcinogenic and mutagenic, in incense smoke.

研究证明香烟中的气态的〈化〉脂肪族的醛，乙醛，是致癌物和诱导有机体突变的物质。

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 apical buds of Celosia cristata were used as the explants for the rapid propagation to compare the mutagenic effects treated with colchicines at different concentrations and time duration in tissue culture.

以鸡冠花顶芽为外植体，研究其离体快繁程序并在无菌体繁殖条件下探索了秋水仙素溶液不同浓度和时间处理对鸡冠花的诱变效应。

Some members of this group of compounds are known to be mutagenic.

这些成分中有些是可以诱变的。

It was also found that the effect of protoplasts" UV mutagenic breeding was better than spores".

我们同时还研究了不同的培养温度对孢子的紫外诱变正向突变率的影响。

Objective To explore the potential mutagenic action of pullulan on mice.

目的研究普鲁兰多糖的潜在致突变性。

Objective To explore the potential mutagenic action of pullulan on mice.

目的 研究普鲁兰多糖的潜在致突变性。

The mutagenic effect of 3mM 5mM was better than that of others.

和苯甲酸胺复合处理的诱变效应较好。

It is mutagenic and toxic to testicular Sertoli cells.

这些都可能是影响生精过程的原因。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。