threshold concentration

The threshold and different concentration levels of geo-chemical blocks of silver in Sanjiang area were determined with geochemical methodology and technology and the blocks were delineated.

利用地球化学块体理论的方法和技术确定了银的地球化学块体的下限和含量级次，对三江地区银元素的地球化学块体进行了划分。

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The power distribution of pumping light and signal light in fiber, fiber length, rear cavity mirror reflectivity, threshold power, doping concentration and pump geometry which can influence the characteristic of the fiber laser are deeply investigated in the MATLAB simulation environment. 3.

在MATLAB仿真环境中，进一步分析泵浦光和信号光功率分布、光纤长度、后腔镜反射率、阈值功率、掺杂浓度以及泵浦结构对输出功率的影响。

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The detection threshold concentration of iodine was determined by inspecting radiographic images at a range of X-ray tube voltages and input exposure levels.

目测观察不同管电压的X线图像，确定碘的探测阈浓度。

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It is considered that the high concentration ( 206mg/ m3) could cause pathological changes and the low concentration ( 15.3mg/ m3) might be the threshold concentration of intoxication on chronic exposure.

由此认为，高浓度（206mg/m~3）为可引起机体产生明显反应的浓度，低浓度（15.3mg/m~3）为慢性阈浓度。

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Determination of the Chloride Threshold Concentration for Reinforcing Steel Corrosion Initiation in Simulated Concrete Pore Solution

模拟混凝土孔隙液中钢筋腐蚀的氯离子临界浓度测试

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When the concentrations of N-demethylmaprotiline and active moiety are higher than threshold concentration, the possibility of side effects may be increased.

去甲麦普替林、活性部分的浓度高于阈浓度时，会增加出现不良反应的可能。

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Finally, the paper suggests lowering the threshold of entering the banking industry and advancing the marketization of interest rates as policy recommendations about reducing banking concentration to promote the output elasticity of capital.

文章最后提出关于适当降低银行市场集中度以促进资本产出弹性提高的政策建议，主要是降低银行业准入门槛和推进利率市场化。

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Threshold by Increasing the Concentration of K+, Na+& Ca 2+ at Several Points of Stomach Channel ( St) on Experimental Stomach Ache Rat

升高胃经线上几处K~+、Na~+、Ca~（2+）浓度对实验性胃痛大鼠痛阈的影响

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Such an observation suggests that no single threshold glucose concentration will worsen postischemic outcome.

此现象说明，使缺血后神经功能不好的后果没有单纯的葡萄糖阈值。

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Analysis on threshold of oxygen concentration in coke oven gas

焦炉煤气含氧量安全限值的分析

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Trimethylamine is a kind of malodorous compound which possesses the speciality of excessive emission and low threshold concentration.

其中三甲胺是排放量大、嗅阈值低的恶臭污染物，是恶臭污染控制的主要对象之一。

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Study on threshold of grouping sediment concentration about floods scouring and silting relative balance in the lower Yellow River;

黄河下游洪水冲淤相对平衡的分组含沙量阈值探讨；

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This threshold molar fraction is lower than the so-called optical damage-resistant threshold concentration of 4.6% in LiNbO_3 ∶ Mg.

该浓度阈值小于掺镁铌酸锂晶体抗光损伤效应的摩尔分数阈值4.6%。

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When K ~ + concentration was 0.8 M , the threshold was raised to 0.2 mM FBP.

过量底物的别构效应对抗了K~+的激活,使酶趋于非活性状态.

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Discussion of Biodegradation Threshold Concentration of Organics

有机物生物降解极限浓度的探讨

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When the MgO concentration was below threshold concentration, the light scattering resistance of samples showed no obviously change.

当MgO含量低于其阈值浓度时，晶体的抗光致散射能力变化不大。

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Zinc sulfate ( 0.1 mmol) inhibited the guinea pig papillary muscle oscillatory afterpotential induced by ouabain ( 0.4 μ mol). It increased the threshold concentration of ouabain necessary for inducing oscillatory afterpotential.

0.1mmol硫酸锌可对抗0.4μmol哇巴因诱发的豚鼠心室肌振荡后电位，提高引起振荡后电位的哇巴因阈浓度。

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Methods: The timing boluses were performed in twenty cases and the parameters such as effective concentration threshold of renal artery were obtained by the time-density curve.

方法：20例行同层动态增强扫描，通过时间-密度曲线获得肾动脉的有效浓度阈值。

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They can activate the expression of pathogenic genes and induce diseases when AHL reach a threshold concentration.

当病原菌产生的AHL达到一定量浓度时，可激活病菌的致病基因表达，使寄主植物感病并表现相应病症。

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The study of phosphorus threshold concentration affecting algal development in enclosure ecosystem bags

围隔模拟生态系统中藻类生长的磷酸盐浓度阈值研究

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The character of exposure-response relationship included the shape of the exposure-response relationship and the existence of the threshold concentration.

暴露-反应关系特征是指暴露-反应关系曲线的形状及是否存在阈值浓度。

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Surface doses were obtained from measured X-ray tube output data. The correlative changes were observed among X-ray tube voltage, surface dose, air kerma, and the detection threshold concentration of iodine.

观察X线管电压、表面剂量、比释动能以及碘探测阈浓度之间的变化关系。

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Factors Affecting Kinetic Threshold Concentration of Biodegradation

有机物生物降解动力学极限浓度的影响因素

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Evaluation of the Kinetic Threshold Concentration of Phenol Biodegradation

苯酚生物降解动力学极限浓度的测定

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