The 48h LC 50 values (lethal concentration fifty) were 7.
４８ｈ所测得的半数致死浓度ＬＣ５０值，ＬＡＳ为７。
QSAR modeling for LC50 of organic chemicals to rainbow trout using molecular connection index;
预测有机物对虹鳟半致死浓度的分子连接性指数法
This paper deals with the acute and chronic toxic effect of Cu2+,Zn2+ r on survival rates,growth of the Neomysis awatschensis including the values of 24,48,72 and 96 h LC50,and safe concentration(SC) in seawate.
包括了Cu2+、Zn2+对黑褐新糠虾在24、48、72和96 h的半致死浓度(LC50),安全浓度(SC)和在生长、成活、繁殖等方面的影响。
The results showed the 48 h,72 h and 96 h LC50(median lethal concentration) values for trichlorfon against fingerling of Carassai.
根据试验期间死亡鱼数及死亡时间,用直线内插法计算各时间点的半致死浓度LC50并根据死亡鱼数研究pH值和温度对敌百虫毒性的影响。
It was found that the 24,48,72 h and 96 h median lethal concentration(LC50) values(95% confidence interval) of the phenol to the juveniles were 97(87-109),83(73-95),75(69-83)mg/L and 71(64-80)mg/L,respective.
结果表明:苯酚对中华鲟稚鱼24、48、72 h和96h的半致死浓度(LC50)及95%可信区间分别为97(87~109)、83(73~95)、75(69~83)mg/L和71(64~80)mg/L;Cu2+对中华鲟稚鱼的24、48、72 h和96 h的LC50及95%可信区间分别为0。
The study showed that tadpoles of Bufo Melanosticus,a specie widely distributed in South China,are highly sensitive to waste battery leaching and that the median lethal concentration decreases with the increase of time.
选用我国南方自然界中广泛分布的黑眶蟾蜍(Bufomelanosticus)的蝌蚪,通过研究废旧电池浸出物对蟾蜍蝌蚪致死率的影响,表明蝌蚪对废旧电池渗出液十分敏感;半致死浓度随着时间的增加而降低。
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。
The results showed that the median-lethal concentrations were 0.
结果显示,这五种药物48 h的半致死浓度分别为0。
The LC_(50) of metriphonate to L.
采用急性毒性方法测定了被不同浓度敌百虫毒害的水丝蚓(Limnodilus hoffineisteri)半致死浓度(LC50),利用测定酶活性方法检测了水丝蚓超氧化物歧化酶(SOD)的变化及中毒后水丝蚓喂饲的强壮水螅(Hydra robusta)SOD的改变。
The LC_(50),the safety concentration and the sensitivity of the drugs were compared and suggestions proposed.
8℃下,6种渔用药物对梭子蟹Ⅰ～Ⅱ期稚蟹的96小时半致死浓度(96hLC_(50))分别为硫酸铜1。