致死剂量

The enzyme activity of cotton bollworm was indicated; after 144 hours teated with the subthal dose (LC50) of the pesticiedes, the difference was detected in the GSTs activities when compared with contrast.

酶动力学研究表明：用4种药剂的亚致死浓度LC50剂量处理棉铃虫3龄幼虫，在药剂处理后的144h内，幼虫GSTs活性发育变化规律与对照有一定的差异。

Results:weijian obviously shortened the latent period of erection in castrational rats after electric stimulus and the latent period of coitus in castrational mice,increased coitus times in castrational mice,increased the appearance rate of sperm suppository in copulated female mice. the acute toxicity tests showed that the half lethal dose(ld50) of weijian was 901.53 mg/kg and 319.60 mg/kg, the long-term toxicity tests showed that large dose of weijian slightly increased the level of glutamic pyruvic transaminase and decreased the glucose,triglyceride and cholesterol of blood, while had no effects on other biochemical factors.

结果： 伟剑能明显缩短去睾丸大鼠的电刺激阴茎勃起潜伏期，明显缩短去睾丸小鼠的性交潜伏期，并增加去睾丸小鼠的性交次数，增加交配后雌性小鼠的精栓出现率；急性毒性试验测得伟剑的口服半数致死量（ld50）为901.53 mg/kg，腹腔注射的ld50为319.60 mg/kg；长期毒性试验研究表明该药在大剂量时可轻度升高谷丙转氨酶，轻度降低血糖、总胆红素及胆固醇，而对其他血液生化指标无影响。

Toxicities of fenoxycarb on quail,honeybee and carp have been tested and its safety evaluation also been conducted. The results showed that:①the toxicity of fenoxycarb on quail and honeybee is low, quail LD50 is 6823.4mg/kg feed and bee LD50(contact 24h) 54.1μg/bee, LC50 (oral 24h)549.5mg/L.

测定了苯氧威对3种环境生物鹌鹑、蜜蜂和鱼的毒性，试验结果表明：苯氧威对鹌鹑、蜜蜂均属低毒，其半致死浓度或剂量鹌鹑LD50 为6823.4mg/kg饲料；蜜蜂的接触毒性LD50(24h)为54.1μg/蜂，摄入毒性LC50(24h)为549.5mg/L药液；苯氧威对鲤鱼的毒性属中等毒，其LC50(96h)为1.77mg/L。

Our result shows that these two kinds of selenates both have stronglethal effect on Rana nigromaculata. In addition, there is a dose-effect relationship betweenthe chemicals and their toxicity effect.

结果显示，两种硒盐对黑斑蛙具有较强的致死作用，并呈现一定的剂量-效应关系。

The most rabbits electro- cardiogram was normal after injecting alum, the potassium ion was not effect on the heart.

家兔按1LD（4.8mg/kg）的剂量皮下注射氰化钾，有足够的致死能力，可导致家兔迅速死亡。

Obviously the cause of his death was over dosage of drugs since more than 10,000 doses of sedatives, amphetamines, and narcotics have been prescribed to him by his doctor.

他的医生给他开出了超过10000剂量的镇静剂、安非他命和麻醉剂，他显然是用药过量致死。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。