方法MTT法观察腺苷的最佳作用浓度及最佳作用时间。
Methods MTT technique was used to observe the optimal concentration and action time.
两种农药对两种微藻产生毒物刺激效应的作用浓度存在差异。
There were significant concentrations and timing differences in the hormesis induced by organophosphorus pesticides in microalgae.
结果：实验结果显示，化疗药物作用浓度与细胞死亡率正相关；
Results: There was a correlation between the concentration of chemotherapeutic drugs and cell death ratios.
模型计算得出的各组元的作用浓度值与文献报道的活度值非常一致。
The calculated mass action concentrations are in agreement with the reported activities.
方法：采用MTT比色法，观察缬沙坦和低分子量肝素不同作用时间和不同作用浓度以及二者合用时对高糖刺激系膜细胞增殖的影响。
Methods:The mesangial cell line was treated by valsartan and low molecular weight heparin under different concentrations and times, and the proliferation activity was measured by MTT.
许多神经递质首先通过增加靶神经元中的循环AMP浓度来发挥其作用。
A number of neurotransmitters exert their effects by first increasing cyclic AMP concentrations in target neurons.
就连人们通常觉得有刺激作用的咖啡因，也表现出了这种特性，它在浓度极低的情况下会抑制老鼠的运动，而在浓度较高的情况下则会刺激老鼠。
Even caffeine, which is generally known only for its stimulatory effects, displays this property, depressing mouse locomotion at very low concentrations and stimulating it at higher ones.
正如施瓦茨所发现的，自体同源趋化作用产生顺流迁移，因为配合基浓度在细胞的下游边上的以增强。
Autologous chemotaxis produces downstream migration because the concentration of ligands is increased on the downstream side of the cell, as Swartz had found.
这些茶叶也经常对那些不需要很高浓度才发挥作用的草药很有利用价值。
Teas are also useful for herbs that don \ 't require high concentrations of active principles in order to be effective.
海洋科学家将此归结于这一事实：由于大气层中CO2浓度上升的副作用，海洋正在越来越呈酸性。
Marine scientists attribute this to the fact that the ocean is increasingly acidic, as a side-effect of rising CO2 levels in the atmosphere.
林木和其他类植物可以维持星球适宜温度，但是大气中二氧化碳浓度的增加会减低这种调节作用。
Trees and other plants help keep the planet cool, but rising levels of carbon dioxide in the atmosphere are turning down this global air conditioner.
没有产生代谢综合征的妇女一般腹部脂肪更少，“好”的高密度脂蛋白胆固醇浓度更高。这种胆固醇与“坏”胆固醇不一样，是起保护作用的。
Women who did not develop metabolic syndrome typically had less belly fat and higher levels of "good" high density lipoprotein (HDL) cholesterol, which unlike "bad" cholesterol is protective.
咖啡因可能是咖啡含有的最知名的成分，但看起来却没什么作用。一项使用脱去咖啡因的咖啡所作的实验显示其也能达到同样的降低血糖浓度的效果。
Caffeine, perhaps coffee's most famous component, seems to have little to do with it; studies that looked at decaffeinated coffee alone found the same degree of risk reduction.
增强的光合作用将减少二氧化碳浓度，而增强的呼吸作用则具有相反作用。
Increased photosynthesis will use up carbon dioxide; increased respiration produces more of it.
相较之下，高浓度的二氧化碳水平不仅可以持续数个世纪，而且还对温度起着支配的作用。
A higher level of carbon dioxide, by contrast, governs temperature, and can endure for centuries.
目的：探讨盐酸对组织的消融凝固作用，盐酸浓度、剂量与消融凝固范围之间的关系。
Objectives: To evaluate the ablation effect of hydrochloride acid and the dependence relationship among density dosage and range of ablation.
氢气(H 2)在催化剂的作用下分离成氢离子(H)和电子，氢离子穿过固体电解质逸出，因此可以检测出其浓度。
Hydrogen (H2) at the next catalyst separated into hydrogen ions (h) and electron, hydrogen ions through the solid electrolyte escape, so its concentration can be detected.
狗鞘内肉牙肿形成后吗啡剂量和浓度相关的时间梯度与作用：一项联合磁共振和组织病理学的研究。
Time Course and Role of Morphine Dose and Concentration in Intrathecal Granuloma Formation in Dogs: A Combined Magnetic Resonance Imaging and Histopathology Investigation.
您能谈谈肝脏在调节血脂浓度中的重要作用吗？
What's the essential role of the liver in regulating plasma lipid concentrations?
随着运移作用的加强，含氮化合物绝对浓度下降，“屏蔽”型与“暴露”型或“半屏蔽”型化合物的比值增加。
With the increasing of oil migration effects, the concentration of nitrogen compounds decreased whereas the ratios of shielded nitrogen compounds to exposed or semi-shielded ones increased.
这种物质在极低浓度下(10ppb)就可以发挥作用，因此，你是闻不到这种物质的。
It works at a very low concentration-10 parts per billion-so you can't smell the compound.
提示在AOPI肺水肿的治疗过程中，给予低浓度的NO吸入必将起到重要作用。
So it would play an important role in AOPI pulmonary edema to inspire low density NO in the process of treatment.
每日科学(5月4日，2010)—树木及其他植物都有助地球保持凉快，但在空气中上升的二氧化碳浓度正降低这个全球空气调节器的作用。
ScienceDaily (May 4, 2010) - Trees and other plants help keep the planet cool, but rising levels of carbon dioxide in the atmosphere are turning down this global air conditioner.
每日科学(5月4日，2010)—树木及其他植物都有助地球保持凉快，但在空气中上升的二氧化碳浓度正降低这个全球空气调节器的作用。
ScienceDaily (May 4, 2010) -trees and other plants help keep the planet cool, but rising levels of carbon dioxide in the atmosphere are turning down this global air conditioner.
但浓度大于4%时促进作用不再成比例的增加。
But this action was no longer increased proportionally When the concentration of Azone above 4%.
但不同处理浓度和处理时间对果实软化的作用效果存在一定差异。
However, different treat concentrations and time had various influences in the maturation and consenescence process of fruit.
《国际肝病》：肝脏在维持血液适当血脂浓度中起重要作用。
Hepatology Digest: Liver plays an important role in maintaining the proper concentrations of lipids in the blood.
《国际肝病》：肝脏在维持血液适当血脂浓度中起重要作用。
Hepatology Digest: Liver plays an important role in maintaining the proper concentrations of lipids in the blood.
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