carcinogenic chemicals

A comparative study on categorizing schemes for carcinogenic activity of chemicals

化学品致癌性评分方案的比较研究

The carcinogenic chemicals sample are coded with structure'node by KLN methods on computer, and then broken up. The substructures of the chemicals the machine can recognize are gotten.

利用计算机将致癌化合物样本按KLN方法作结构结点编码、分解，获得机器可识别的化合物结构片段。

Polycyclic aromatic hydrocarbons ( PAHs), a kind of POPs are ubiquitous in air, contributing more than 1/ 3 of the total carcinogenic chemicals, with the source of oil-leak, traffic emissions, environmental tobacco smoke, fuel-burning, cooking oil-fumes, and, so on.

多环芳烃（PAHs）是大气中广泛存在的一类持久性有机污染物，占自然界中致癌物质总量1/3以上，主要来源有石油泄漏、汽车尾气、环境烟草烟雾、燃料燃烧及烹调油烟等。

The results are consistent with the contention that there is a relationship between carcinogenic chemicals and particular alterations in the activities of cytochrome P-448.

本文结果表明，细胞色素P-448活性的诱导与化学物的致癌潜力有关。

Sewage discharge and emission of exhaust gas might be the main way for transportation carcinogenic chemicals, especially for environmental endocrine disrupting chemicals ( EDCs) to pollute environment.

废水和废气排放可能是导致内分泌相关肿瘤发生的原因之一，尤其是环境内分泌干扰物（EDCs）污染外环境的主要途径。

Scientists suspect that alcohol interferes with the body's ability to convert carcinogenic chemicals in smoke into more benign substances that it can eliminate.

科学家们怀疑酒妨碍了身体将烟中的致癌化学物质转化成毒性较弱的物质并加以清除的能力。

EU agriculture ministers last week agreed changes to the pesticide authorisation system that would effectively ban the use of carcinogenic chemicals and substances that damage human hormones or the reproductive system.

欧盟各国农业部长上周同意调整农药审批体系，这些调整实际上将禁止使用致癌化学品和危害人体激素或生殖系统的物质。