NEC:无效果浓度
“无效果浓度”(No Effect Concentration)在专业领域常被缩写为NEC,以方便书写与日常使用。该术语广泛应用于环境科学、毒理学及化学等综合领域,用于表示某种物质在特定条件下不会对生物体产生可观测效应的最大浓度。了解NEC对于评估化学品的安全阈值和环境风险具有重要意义。
The No Effect Concentration具体释义
The No Effect Concentration的英文发音
例句
- The contents of soil available N increase when the concentrations of REs in soil are low whereas higher levels of REs have negative effects, and the NOEC ( no observed effect concentration ) of applied REs to it is 443.8 mg · kg ~ ( - 1 ).
- 有效氮的含量在稀土含量较低时升高,高含量时则下降,实验确定外源稀土对旱培土壤有效氮作用的无观察效应浓度(NOEC)为443.8mg·kg-1。
- The results show that the velocity almost has no effect on concentration distribution and generally the numerical dispersion can be substituted for physical diffusion.
- 结果表明,虽然随渗流速度增加,扩散系数增加,但对浓度分布几乎没有影响;而且在精度要求不高,物理扩散较小时,数值稳定性好的对流方程的数值弥散可以代替物理扩散。
- NB-UVB can promote percutaneous penetration of tacrolimus and can elevate the concentration in skin, but has no effect on concentration in blood. 2.
- 结论1.NB-UVB对他克莫司的透皮吸收有促进作用,可以提高皮肤中他克莫司的浓度,但对血药浓度无影响。
- The plastic container, the enamelware and the time of storing disinfectant had no effect on the concentration of disinfectant.
- 塑料和搪瓷容器及溶液贮放时间的长短对消毒液浓度无影响。
- All the triazole fungicides had no effect on the germination of sclerotium below the concentration of 10 μ g / mL.
- 而当药剂浓度在10μg/mL以下时,己唑醇等三唑类杀菌剂对菌核萌发均没有影响。
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