半致死的

The changes of proteins in the leaves of seedlings in Euonymus radicans treated at different duration of cold acclimation were analyzed by using 2-dimentional electrophoresis.

应用电导法，配以Logistic方程，测定了未经冷驯化和经冷驯化的金边卫矛幼苗的低温半致死温度，并测定了未驯化苗和驯化苗经各级冰冻温度处理后，在4℃恢复一天后的系列电解质渗出率。

The adaptive changes of these substances leading to the falling of the semilethal low temperature i...

这些物质的适应性变化导致低温半致死温度的下降是抗寒性提高的生理基础。

The decline of the semilethal temperature caused by the changes of membrane protective system was the foundation of rising the cold resistance.

膜保护系统的适应性变化导致低温半致死温度的下降是抗寒性提高的基础。

The inhibition effects became stronger with the increase of the irradiation dose. Semi-lethal dose of Ailanthus altissima Swingle seeds was 50Gy. 50~75Gy could be considered as the proper dose for seed irradiation treatment of Ailanthus altissima Swingle.

结果表明：辐照抑制了种子的萌发，成苗率下降，幼苗生长受到抑制，且随着剂量的增加，抑制作用增强；椿树种子的半致死剂量为50Gy，适宜辐照剂量为50~75Gy。

Compared with unacclimated seedlings, the contents of most proteins in the leaves of acclimated seedlings increased.

两种处理苗恢复后的电解质渗出率可以验证两者的低温半致死温度基本正确。

Semi-lethal dose of its cancer cells for the 0.8 ~ 2muM, far less than the toxicity of retinoic acid, therefore, crocin, such as anti-cancer active substance will become the 21st century, one of the best anti-cancer drugs.

其癌细胞的半致死量为0.8～2muM，毒性远远小于维甲酸，因此，藏红花素等抗癌活性物质将成为21世纪最理想的抗癌药物之一。

The results showed that semi-lethal temperature of P. racemosa was -35.6℃, indicating that plant could overwinter safely in Xinjiang without any protection measures. It can be used as suitable tree species in landscope engineering and afforestation.

结果表明，紫叶稠李的半致死温度为-35.6℃，在新疆寒冷的冬季不采取任何措施可安全过冬，是园林工程、荒山绿化树种配置的优良树种。

Finally Western blot was used to detect the amount of b-lactamase in both bacterial periplasm and cytoplasm. Antibiotic tests showed that high concentrations of ampicillin inhibited the growth of E.

抗生素抗性分析发现，高浓度的氨苄青霉素抑制E.coli Top10 pcs+细菌的生长的氨苄青霉素剂量低于对照组，其半致死剂量IC50在700~800mg/mL之间。

Based on the data of seeding rate and root growth,it is concluded that the semi-lethal radiation dose of Platanus acerifolia Willd.dry seed was 50Gy,and the suitable dose range for radiation breeding was 50 to 250Gy.

通过对悬铃木辐射组与对照组成苗率和根长进行比较，初步推测悬铃木辐射的半致死剂量为50Gy，辐照诱变的适宜剂量为50至250Gy。

Closed-system algal toxicity test was applied to evaluate the toxicity of secondary and tertiary propargylic alcohols to Pseudokirchneriella subcapitata. The effects of propargylic alcohols were evaluated by three kinds of response endpoints, i.e., dissolved oxygen production, cell density, algal growth rate.

bstract：本研究以藻类（Pseudokirchneriella subcapitata）利用BOD瓶进行一密闭式系统之毒性试验，使用溶氧变化量，藻细胞的数量变化，以及以藻类细胞密度变化量计算所得的生长率三个终点，评估二级以及三级炔丙基醇类之毒性，藉由Probit模式求出半致死浓度（50% Effect concentration，EC50）。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。