lethal concentration fifty

The 48h LC 50 values (lethal concentration fifty) were 7.

４８ｈ所測得的半數致死濃度ＬＣ５０值，ＬＡＳ為７。

QSAR modeling for LC50 of organic chemicals to rainbow trout using molecular connection index;

預測有機物對虹鱒半致死濃度的分子連接性指數法

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+對黑褐新糠蝦在24、48、72和96 h的半致死濃度(LC50),安全濃度(SC)和在生長、成活、繁殖等方面的影響。

The results showed the 48 h,72 h and 96 h LC50(median lethal concentration) values for trichlorfon against fingerling of Carassai.

根據試驗期間死亡魚數及死亡時間,用直線內插法計算各時間點的半致死濃度LC50并根據死亡魚數研究pH值和溫度對敵百蟲毒性的影響。

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.

結果表明:苯酚對中華鱘稚魚24、48、72 h和96h的半致死濃度(LC50)及95%可信區間分別為97(87~109)、83(73~95)、75(69~83)mg/L和71(64~80)mg/L;Cu2+對中華鱘稚魚的24、48、72 h和96 h的LC50及95%可信區間分別為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.

選用我國南方自然界中廣泛分布的黑眶蟾蜍(Bufomelanosticus)的蝌蚪,通過研究廢舊電池浸出物對蟾蜍蝌蚪致死率的影響,表明蝌蚪對廢舊電池滲出液十分敏感;半致死濃度隨著時間的增加而降低。

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

濃度梯度按等對數間距設置,半致死濃度采用直線內插法進行計算。

The results showed that the median-lethal concentrations were 0.

結果顯示,這五種藥物48 h的半致死濃度分別為0。

The LC_(50) of metriphonate to L.

采用急性毒性方法測定了被不同濃度敵百蟲毒害的水絲蚓(Limnodilus hoffineisteri)半致死濃度(LC50),利用測定酶活性方法檢測了水絲蚓超氧化物歧化酶(SOD)的變化及中毒后水絲蚓喂飼的強壯水螅(Hydra robusta)SOD的改變。

The LC_(50),the safety concentration and the sensitivity of the drugs were compared and suggestions proposed.

8℃下,6種漁用藥物對梭子蟹Ⅰ～Ⅱ期稚蟹的96小時半致死濃度(96hLC_(50))分別為硫酸銅1。