By the analytic technique of HPLC,the half life was 23.

8mg/kg時,所測半衰期為23。

To study the behavior of the half life of ozone under normal temperature,the calculation formula of the half life of ozone in obturation cabin was obtained by revising the indoor chemical exposure model established by Swarlar under naturally attenuating condition.

研究臭氧半衰期規(guī)律,對Swarlar等人建立的室內化學暴露模型在臭氧自然衰減情況下進行修正,推導出密閉環(huán)境艙內的臭氧半衰期計算公式,研究表明臭氧半衰期與初始含量無關,只與環(huán)境艙大小、材料對臭氧的去除速率及自身分解速率有關。

The half life was less than 27 days under the above conditions.

0;該菌株依靠共代謝作用還原PGNB,在培養(yǎng)液和土壤懸液條件下均能加速PC-NB的降解,半衰期均低于27 d。

Effect of pegylation degree on activity and half-life of hirudin;

聚乙二醇不同修飾度對水蛭素活性和半衰期的影響

Half-life measurement of ~(79)Se with projectile X-ray method in AMS;

利用加速器質譜學中的入射離子X射線方法測定~(79)Se的半衰期

Half-life determination of ~(142)La decay;

~(142)La半衰期的測定

The results show that the half-life time of a well tightened cleanroom is less than 5 minutes,and the hourly leak rate is less than 10 percent.

結果表明,一個密封很好的潔凈室,500Pa壓力的半衰期不足5min,小時泄漏率不到10。