1、

Determination of median lethal concentration of seven kinds of medicines against Boophilus microplus

七种药物对微小牛蜱的半数致死浓度测定

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2、

The median lethal concentration data is reliable for future biological observation.

为今后的生物监测提供可靠的半致死浓度的数据。

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3、

Median lethal concentration to human embryo lung fibroblastic cell is about 41.3 μ g/ ml.

引起半数人胚肺成纤维细胞生长抑制的浓度为41.3μg/ml。

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4、

The grades were designed by equal space between logarithm, and the median lethal concentration was computed by Linear Regression.

浓度梯度按等对数间距设置,半致死浓度采用直线内插法进行计算。

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5、

The extract had higher toxic killing effect on Euproctis bipunctapex larvae. However, the effect was lower. The median lethal concentration ( LC_ ( 50)) for the larvae treated for 72 h was ( 0.03227%).

雷公藤提取物对乌桕毒蛾幼虫具有较高的毒杀作用,但表现比较缓慢,处理72h后的死亡中浓度LC50为0.03227%。

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6、

The median lethal time ( LT_ ( 50)) of P_ ( f) NPV to the larvae was shortened with the increase of the viral concentration.

各测试浓度下致死中时间(LT(50)为3.43-5.14天,随病毒浓度提高而缩短。

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7、

The median lethal time ( LT50) of the GV was shortened with the increase of the virus concentration and the decrease of the larval instar, during which the GV was fed.

幼虫饲毒后,致死中时(LT(50))随病毒浓度提高而缩短;随饲毒时虫龄的增大而延长。

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8、

Median lethal time, mean lifespan and mean maximum lifespan of drosophila fed with different concentration of ponceau 4R were lower than those in control groups dominantly ( P < 0.05 or P < 0.01) in survival experiment, and a dose-response relationship was shown.

生存试验中各浓度组雌雄果蝇的半数死亡时间、平均寿命及平均最高寿命均较对照组缩短(P<0.05或P<0.01),且存在剂量-反应关系。

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