The structure-toxicity relationship of 59 substituted benzenes was studied by the method of bayesian regularization neural network,and a QSAR model was built for environmental toxicity evaluation and prediction of substituted benzenes with lipid-water partition coefficient and four quantum indices.

利用貝葉斯規(guī)整化神經(jīng)網(wǎng)絡研究了59種苯取代的環(huán)境毒性和分子結構的關系www.日本特级。建立了基于脂水分配系數(shù)和4種量子指數(shù)的QSAR環(huán)境毒性預測模型。結果表明：該模型的預測性能超過偏最小二乘法和逐步線性回歸方法，殘差分析顯示其穩(wěn)定可靠，有望成為一種良好的苯取代物毒性的環(huán)境評價和預測的方法

But methoxychlor also has female reproductive toxicity,mainly affecting ovary,uterus,nidation of ovum of pregnant rats,which is an important aspect of ...

甲氧滴滴涕對雌性生殖系統(tǒng)的卵巢91超薄丝袜脚交、子宮以及受精卵植入同樣具有毒性作用，其是內(nèi)分泌干擾毒性的重要方面国产制服丝袜在线91，對闡明環(huán)境毒物導致的雌性生殖毒性及防治有重要意義国产精品视频三区。

To observ the toxicity of infected mice and establish mice reproductive toxicity model;②To observe the infected BALB/c female mice ovulation quantums and ovum chromosome;③To observe the oestrogenic hormone( FSH, LH, E2 )level of infected BALB/c female mice;④To observe zygote developmental condition before nidation;⑤To observe embryonic development condition of infected mid-gravidity mice to research the reproductive toxicity and development toxicity of toxoplasma gondii to the BALB/c female mice.

目的： 本實驗采用弓形蟲感染BALB/c雌鼠，①觀察染蟲雌鼠的毒性反應A级毛片,黄,免费观看m，建立生殖毒性的小鼠模型毛片基地免费看视频；②染蟲雌鼠排卵情況及卵母細胞染色體的變化；③染蟲雌鼠性激素(FSH先锋资源最新在线、LH不卡黄色网、E2)水平的變化；④著床前受精卵的發(fā)育情況全网最全黄色网站在线观看视频；⑤孕中期鼠染蟲后胚胎的發(fā)育情況，探討弓形蟲對雌鼠生殖功能及胚胎發(fā)育的毒性作用欧美亚洲日韩国产一区。

Toxicity characterisation procedures indicated that the primary toxicants in the effluent were volatile,and could be reduced by sodium thiosulfate. Toxicity based fractionation techniques were conducted,and the oxidation organic chloridates were found not to be the major toxicants.

結果表明亚洲欧美变态另类第二页，廢水對大型蚤具有急性毒性，曝氣可去除廢水的部分毒性老人把我添到了高潮A片，硫代硫酸鈉的投加可去除廢水毒性韩日性网，同時用DPD試劑盒比色法可測出游離態(tài)氯氣和一價氧化態(tài)氯化物。

The reproductive toxicity of Aroclor 1254 on the oogenesis, the fertilization and preimplantion embryonic in vivo in female mice, the spermatogenesis toxicity, the sperma fertilizing ability and the zygote developmental toxicity in vivo in male mice were studied, and the toxicity mechanism were discussed by histopathological examination of the ovary, the uterus, the testis and epididymides.

以小鼠為動物模型日韩性爱怡红院，研究了類二噁英多氯聯(lián)苯的典型代表物質(zhì)——Aroclor 1254對母鼠卵子發(fā)生亚洲天堂在线视频观看、受精和附植前胚胎體內(nèi)發(fā)育毒性，公鼠精子發(fā)生毒性18分钟好痛视频，以及對精子受精能力和受精卵體內(nèi)發(fā)育的毒性97超碰资源人妻。

Learning and memory function is very complicated and subtile nervous activity, as importance contents of evaluation CNS function, from the effect of learning and memory to explore the damage and mechanism, objective evaluation toxicity efficacy and deep elucidated the toxicity mechanism, it is scientific and practically.

從對學習記憶功能影響的角度探討MTBE對中樞神經(jīng)系統(tǒng)的損傷及其機制，可以深入的了解MTBE對CNS的毒性機理欧美老妇性交vip，客觀評價其毒性作用亚洲欧洲两性，為有效預防MTBE神經(jīng)毒性作用提供科學依據(jù)。

DON causes feed refusal, emesis, immunosuppression or immunostimulation, teratogeny, cytotoxicity, reproductive toxicity and human cancers.

脫氧雪腐鐮刀菌烯醇不僅可以導致動物產(chǎn)生急性毒性自拍偷拍www、生殖毒性www.aaa.com欧美、免疫毒性，而且與人的癌癥相關igao综合视频。

The regression analysis was adopted to study the relativity between dt, ad and the toxicity of ra.results ra decocted liquids could decrease voix pedis tumefaction of bizheng model animals, but had no effect on the growth and development and hematopoietic system of model animals.

將結果進行多元回歸分析一级A爱A片免费观看，得出川烏煎煮時間女人不戴套日出白浆在线观看、劑量與毒性的相關性。結果川烏水煎液能抑制痹證動物的足跖腫脹亚洲天堂五月婷婷；對模型動物的生長發(fā)育無明顯影響国产jlzzjlzz视频免费；對其造血系統(tǒng)無明顯毒性；對其肝臟欧美a级性爱影院、腎臟中文字字幕在线中文第6页、心臟有一定毒性。

Fluoride ions caused widespread endemic fluorosis in humans, but little attention was paid to the effect of fluoride ions on aquatic organisms. Semi-static acute toxicity trial on larval Siberian sturgeon Acipenser baeri was carried out to explore the safe criteria of fluoride to fish.

為檢測氟對魚類的生態(tài)毒性效應在线视频se，在水溫（17±1）℃的條件下国产精品免费看久久久无码蜜柚，采用半靜態(tài)式生物毒性試驗方法研究了氟離子對西伯利亞鱘初孵仔魚的急性毒性效應（氟離子濃度梯度設置為0、1002020国产一区、200爱趣视频改成啥了、300、400日韩欧美日逼视频、500国产三级一区二区三区在线视频、600mg·L-1）。

The results showed that the toxicity of brofluthrinate to birds, bees and earthworms is low, to fish is medium, and to Daphnia, alga, silkworms is high.

結果表明：其對鳥類95视频在线观看国产免费、蜜蜂和蚯蚓的毒性較低免费看黄色视頻；對魚類屬中等毒性；對B045類欧美三级日韩精选、藻類和家蠶屬高毒性AⅤ资源网影音先锋。