查询词典 lethal dose

In order to study the pyrethroids pesticides stress on the physiological and biochemical process of vegetables, effects of different concentrions of fenvalerate stress (20% emulsifiable concentrate, recommended dose: 1500 times dilution; double dose: 750 times dilution) on the activities of antioxidant enzymes, and contents of malondiadehyde in pakchoi were investigated under the open-field condition.

为探讨菊酯类农药胁迫对蔬菜生理生化过程的影响，以小白菜为研究对象，采用大田试验研究了不同浓度氰戊菊酯（20%乳油，推荐用量：稀释1500倍；加倍用量：稀释750倍）对小白菜抗氧化酶活性及丙二醛含量的影响。

In addition, I did basic experiment including seeking the equivalent dose with the single piece to do a few samples; demarcated the eradiate system of laboratory and proceeded the system mark settles, computing the Dose Rate of source.

此外，对释光测年做了大量基础实验工作，做了单片剂量法求取样品的等效剂量，并计算了几个相应的年龄数据；对实验室的辐照系统进行了系统标定，计算出了实验室辐照源的辐照剂量率。

The UVB dose chosen was reported to be approximately 50 % for the minimal erythemic dose for this animal.

UVB的照射剂量小于最小红斑量的1／2。

High copper also can cause the decrease of ATPase activity and membrane fluidity. These revealed that high dose copper destroied function of erythrocytic membrane and cause haematolysis, which may be one of mechanisms of the toxic effect induced by high dose copper.

高铜使红细胞渗透脆性增加，在酸性甘油溶液中的溶血速度(AGLT50)升高，细胞膜ATPase活性降低和膜流动性降低，表明高铜能够破坏红细胞膜的功能，进而使得红细胞发生溶破，这可能是高铜对羊红细胞毒性作用的机制之一。

Totally 50 male Kunming mice were recruited and randomized into 5 groups: normal control group, model group,positive control group, 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside 0.03 g/kg group (low-dose group), and 2,3,5,4 '-tetrahydroxystilbene-2-O-β- D-glucoside 0.1 g/kg group(high-dose group).2,3,5,4'-tetrahydroxystil bene-2-O-β-D-glucoside was an effective component extracted from Chinese herb tuber fleeceflower root in the Department of Pharmacology, Xuanwu Hospital of Capital University of Medical Sciences.

选取雄性昆明小鼠50只，随机分为5组：即正常组、模型组、阳性对照组、二苯乙烯苷0.03g/kg组、二苯乙烯苷0.1g/kg组。

Methods:Formular dose setting-up method was adopted to set up the radiation sterilizing dose of the product and disinfectant experiment of the product was done.

采用公式剂量设定法，设定产品的电离辐射灭菌吸收剂量并进行产品消毒试验的测定。

ResultsCompared with model group, the clearance rate K of charcoal particles, phagocytic index a, thymus and spleen index and ear swelling degree of 80 mg/kg.bw Fortunella crassifolia flavonoid dose group were significantly improved(P.05), and a very significant effect (P.01) was made to the HC50 value at this dose.

结果与模型对照组相比，金橘黄酮80 mg/kg·bw 剂量时，小鼠碳粒廓清指数K、吞噬指数a、胸腺和脾脏指数、耳肿胀度有显著提高（P0.05），血清溶血值（HC50）有极显著提高（P.01）；金橘黄酮160 mg/kg·bw 剂量对全部试验参数的影响具有极显著性（P.01）。

Above organs emerged different damage in crude middle and high dose and processed high dose after 3 months and serum indicators- creatinine, urea nitrogen manifestly were increased, the coefficients of liver, kidney and gaster manifestly were heightened.

连续给药3个月，生品的中、高剂量组和炮制品的大剂量组均出现了上述脏器程度不同的损伤，可见血清生化指标的肌酐、尿素氮明显升高，肝、肾、胃脏器系数明显增加。

Results: Compared with the model group, helianthin resid rate of the high dose and low dose group of JG, and motilin and CCK was higher. There is statistical signficance.

结果 加味柴平颗粒剂高、低剂量组与模型组相比较，甲基橙残留率降低，而胃动素以及胆囊收缩素升高，差异有统计学意义。

Objective To summarize the long-term effect of combined treatment with large-dose zinc sulfate and low-dose penicillamine in children with hepatolenticular degeneration.

目的 总结大剂量硫酸锌与小剂量青霉胺联合治疗儿童肝豆状核变性(hepatolenticular degeneration，HLD)的远期效果。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。