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The foamy substances cover foam protein, polypeptide, isohumulone, melanoid, metal ions, amylase, alcohol and barm etc.

使啤酒形成泡沫的物质有泡沫蛋白和多肽、异律草酮、类黑素、金属离子、多糖、酒精、二氧化碳及酵母等。

Sodium fluorescein ; Fluorescence quenching ; Concentration quenching ; Heavy metalic ions ; Development

荧光素钠；荧光猝灭；浓度猝灭；重金属离子；显影

In this paper, we studied the relationshipbetween the concentration, acidity, temperature, heavy metalic ions and the fluorescencequenching of fluorescein. The result showed that when the concentration was over 1. 55 ×10-5 mol/L, the fluorescence quenching strengthened with the increase of f...

结果表明：荧光素浓度大于1.55×10－5mol·L－1时，随着浓度增大，荧光猝灭作用增强；酸度对荧光猝灭作用有明显作用，PH值小于8.5时，随着PH值升高而减弱，PH值大于8.5时，随着PH值升高而增强；温度对荧光猝灭作用呈线性关系，温度升高，荧光猝灭作用减弱；重金属离子对荧光猝灭有显著的作用，是影响眼底血管造影质量的重要因素。

However, the thermal stability of metallic coordination polymer hardly enhanced in comparison with the polymer never coordinated transitional metallic ions. The reason might be that the energy of coordinate bond formed between metallic ion and polymer was trival in comparison with that of covalent bond in polymer. It started with coordinate bond when the coordinate polymer decomposed under high temperature, so it engendered little for the thermal stability at high temperature.

而金属配聚物较未配位金属的配体高温热稳定性提高不大，可能是由于金属离子与配体之间形成配位键的键能与配位体内的共价键键能相比要小得多，当金属配聚物受热裂解时，首先从配位键开始，因此对高温热稳定性的影响甚微。

MeV ions result in high damage rate, and the relation between remained sample and dose almost consistents with the target model.

MeV离子导致了高的损伤速率，残存率和离子剂量之间的关系也基本符合靶模型的预期。

Series of octahedral core-shell emulsion microcrystal with different distribution of iodide ions was prepared by double-jet method.

本文应用双注法制备了一系列碘分布不同的八面体核壳乳剂。

According to the results of correlation analysis and the results of former research, the metal ions were thought to have little influence on the microfauna community in the two sewage treatment plants.

结合前人研究结果以及本研究所做的微型动物群落与重金属离子浓度的相关分析，可以认为重金属离子对两个污水处理厂活性污泥系统中微型动物群落影响不大。

The relationship between microfauna community and heavy metal ions Ni2+, Cd2+, Cr2+, Cu2+ and Pb2+ concentrations in activated sludge of Baoding Lugang Sewage Treatment Plant and Baoding Yindingzhuang Sewage Treatment Plant was studied.

研究了保定鲁岗污水处理厂和保定银定庄污水处理厂活性污泥系统中镍、镉、铬、铜和铅离子的浓度与微型动物群落的关系。

Intracellular free calcium ions level of smooth muscle cell was controlled by the technique of calcium claw cell length was measured by computerized image micrometry.

用图像分析系统测量平滑肌细胞长度。采用激光扫描共聚焦显微镜和免疫荧光技术分析rhoa在细胞内的时空分布变化。

Recently, cleaning should remove not only organic matter on silicon surface, but also the particles of millimicron order and ppt metallic ions.

目前清洗不但要去除硅片表面的有机物而且需要去除的颗粒尺寸已经达到了纳米级，金属离子达到了ppt级。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。