Based on toxicity mechanism, a QSAR model was established and used to explain the toxicity of organic chemicals to fathead minnow and Photobacterium phosphoreum, which showed good relationships with wide range of organic compounds.

根據(jù)毒性機(jī)理一级黄色录像视频免费看，從理論上推導(dǎo)出有機(jī)物的定量結(jié)構(gòu)—活性方程，并用來解釋有機(jī)物對呆鰷魚和發(fā)光菌的毒性情欲网址，成功地闡述了有機(jī)物對水生生物的毒性機(jī)制亚洲国产精品一区二区玖玖爱，區(qū)分了有機(jī)物對不同生物的毒性的聯(lián)系和區(qū)別，為有機(jī)物生物活性預(yù)測提供了新的思路。

The results indicate that the type and number of the substituents affect the toxicity of these compounds directly. A nitro group substitution increases the toxicity of the compounds, and on the contrary, an amido group substitution decreases their toxicity. For multi-nitrobenzenes, the toxicity of the o - or p -substituted nitrobenzene is bigger than that of the m -substituted one.

苯環(huán)上取代基的類型中国农村妇女HDⅩXX、數(shù)目和取代位置直接影響到標(biāo)題化合物的毒性大小日本大片黄色，強(qiáng)吸電子基如硝基會降低 Q -NO2和 E LUMO大小，使化合物毒性增強(qiáng)国内机关自拍视频在线观看，且鄰對位硝基取代的毒性高于間位取代黑人和黑人一级毛片；相反，給電子基團(tuán)氨基的存在則會使化合物的毒性降低欧美乱人伦中文视频在线观看。

The third part of this project is to evaluate the safety of the nutria gland. The assay items will include single dose acute toxicity, multiple dose subacute toxicity and mutagenicity test.

在安全性評估方面97欧美性爱在线，本計(jì)畫將進(jìn)行北美巨水鼠腺體之動物毒性試驗(yàn)，含單一劑量急毒性及重覆劑量亞急毒性在线免费黄色视频。，以及基因毒性試驗(yàn)精品国产黄。

In single acute toxicity test and joint toxicity test,the acute toxicity and joint toxicity of heavy metals Cu2+ and Cd2+ to paramecium was studied.

方法］通過單一急性毒性試驗(yàn)和聯(lián)合毒性試驗(yàn)，研究了金屬離子Cu2+和Cd2+對草履蟲的急性毒性和聯(lián)合毒性国产美女丝袜喷水。

Based on history retrospective study and modern research, the paper expounded that the developing course of embryo toxicity of traditional Chinese medicine is from cyesis abstinence to inheritance toxicity and reproductive development toxicity, and overviewed the research of active components of traditional Chinese medicine in the domains of inheritance toxicity and reproductive development toxicity.

筆者通過對胚胎毒性中藥的歷史回顧和研究現(xiàn)狀分析精品国产区一区二免费观看，闡述了中藥胚胎毒性由妊娠禁忌到遺傳毒性和生殖發(fā)育毒性的衍變發(fā)展過程以及中藥有效成分在遺傳和生殖發(fā)育毒性中的研究概況。

The toxicity of selected compounds and their binary mixtures of sodium dodecyl sulfate with three substituted aromatic compounds to photobacterium phosphoreum was investigated, respectively.

研究陰離子表面活性劑十二烷基硫酸鈉和苯酚国产综合精品一区二区、硝基苯三级片av片毛片免费在线播放、甲苯3種取代芳烴對發(fā)光菌的單一毒性，以及在等濃度配比條件下玖玖玖在线有精品6，SDS與這3種取代芳烴二元混合體系的聯(lián)合毒性效應(yīng)人成网免费，并采用毒性單位、相加指數(shù)无码无毒黄色网站、相似性參數(shù)和泥合毒性指數(shù)進(jìn)行毒性評價(jià)A在线免费看。

A comparative study on the joint toxicity of binary mixtures of anilines to Photobacterium phosphoreum and Daphnia magna

按器官系統(tǒng)分類，可分為神經(jīng)毒性黄片在线高清免费观看、眼毒性日本人V精品视频一区、心臟毒性、肝臟毒性日韩手机色自拍图片小说、腎臟毒性及生殖毒性等女性黄色下体免费照片和视频永远免费。

In this thesis, the acute lethal toxicity to Rana japonica tadpoles, the short-term phytotoxicity to Cucumis sativus and the population growth inhibition toxicity to Tetrahymena pyriformis of selected substituted phenols with multiple mechanisms of toxic action were compared and interspecies correlation was investigated.

本文比較了具有多種毒性作用機(jī)制的取代苯酚對兩棲動物幼體的急性致死性毒性、對高等植物生長的抑制毒性以及對原生動物—四膜蟲的種群生長抑制毒性中国一级黄色尤物网站，探討了這一類污染物的毒性作用機(jī)制操逼网av，進(jìn)行了種間相關(guān)性研究。

In conclusion, the hepatotoxicity of clivorine is caused by the hepatotoxic pyrrolic metabolites formed in vivo. CYP3A involved in the formation of pyrrolic metabolites and plays a key role in metabolism-induced hepatotoxicity of clivorine.

Clivorine的肝毒性是其在體內(nèi)形成的肝毒性吡咯代謝物所致超碰在线a，CYP3A參與了肝毒性吡咯代謝物的形成并在clivorine的代謝致毒方面發(fā)揮了關(guān)鍵性的作用A片爽爽爽免费看视频网，因此CYP3A的誘導(dǎo)劑和抑制劑可以影響肝毒性吡咯代謝物的形成，從而影響clivorine的肝毒性午夜试看120秒无码体验区。

The chief results were summarized as follows: In the toxicities tests to aquatic animal in the room, the results showed that Deltamethrin and Lambda-cyhalothrin, which the actual toxicities in the 24 hours on fish, loaches and tadpoles all are above 100%, were the most high toxicity, and that Chlorpyrifos and Triazophos, which the actual toxicities in the 24 hours on them are bellow 54%, were the more high toxicity, and that Fipronil and Abamectin were relatively safe, which the actual toxicities in the 24 hours on them are 22%, and that Bisultap was completely safe, which the actual toxicities in the 24 hours on them are bellow 4%.

研究結(jié)果表明：溴氰菊酯先锋5566资源网站资源、高效氯氟氰菊酯對水生動物的毒性最高，對魚、泥鰍国产永久在线视频、蝌蚪24h急性毒性都為100％6080午夜三级中文在线观看，毒死蜱、三唑磷毒性次之日韩黄色视频中文字幕，對魚欧日一级黄片、泥鰍、蝌蚪24h急性毒性均在54％之上自拍视频.com，氟蟲腈色色五月天社区、阿維菌素較安全，對魚操美国大逼、泥鰍黄片看看、蝌蚪24h急性毒性均在22％之下，殺蟲雙對水生動物最安全丁香欧美亚洲小说在线观看，對魚26uuu欧美综合、泥鰍、蝌蚪24h急性毒性為4％以下人人操大屁股。