查询词典 Ion

An ion chromatography method for the determination of sulfate content in agar was established.

确立了离子色谱法检测琼胶中硫酸基含量的样品处理方法和检测条件。

Highly charged ions ; secondary ion yield ; linear cascade collision ; potential aggradation

高电荷态离子；二次离子产额；线性级联碰撞；势能沉积

The principle of using an air ionization chamber to monitor doses in heavy ion radiation research is described.

论述了采用平行板电离室在重离子辐射生物研究中监测剂量的原理。

The scope of its air volume is more broader than the ordinary air ion gun wider.

它的风量范围比一般离子风枪更宽。

Objective To investigate the affect on the biologic activity of hepatoma SMMC-7721 cell line of negative air ion in vitro.

目的探讨空气负离子对体外培养的肝癌SMMC-7721细胞生物学活性的影响。

Ex -cept the normal group, the mice in other three groups received sensitizat -ion by intraperitoneal injection of ovalbuminand challenge by inh -alation of OVA to induce bronchial asthma, The mice models of asthmaerwent with different therapy.

干预完成后，采用ELISA方法检测血清中IFN-γ水平，黄嘌呤氧化酶法检测肺组织中SOD活性，硫代巴比妥酸法测定肺组织中MDA含量。并对各组小鼠肺组织进行病理形态学观察。

Because the olefinic hydroxyl groups are linked with olefinic carbon, so it can ionize H〓 ion and present the properties of weak acid, and so the olefinic hydroxyl groups change into the structure of alcoholate in the presence of alkali , but the structure of alcoholate may change into the structure of olefine alcohol again, after the Na〓 ions is removed, or when the pH value of its solution turn into pH. Because the structure of the olefine alcohol is not stable and is easy to isomerizate to become the structure of olefine ketone, so there appear the ca. 1730cm〓 C=O absorption peak in the IR spectra of the products.

明确指出了在C〓、C〓富勒醇中存在烯碳羟基与叔碳羟基等二类羟基，烯碳羟基由于与一个共轭体系相连，从而其羟基可以离解而呈现出弱酸的性质，因而在碱性条件下易形成烯醇钠盐的结构，当除去钠离子后或在酸性溶液中，烯醇钠盐结构转变为烯醇结构，但由于烯醇结构不如烯酮结构稳定，从而形成烯醇结构后，烯醇结构异构化为烯酮结构，因此在其产物的IR谱图上出现1730cm〓附近的C=0吸收信号。

It was found that these calcium alginate based hybrid microspheres exhibited pH and ion-sensitive swelling properties.

杂化凝胶微球的溶胀行为对pH值和离子强度的变化具一定敏感性。

After we have designed the lenses system, deflectors, beam aligner, stigmator and mass separator, integrated design of ion optical column was realized by using fifth order Runge-Kutta trace the ions directly. We also simulated the coulomb effect among ions through Monte Carlo method.

各个光学器件设计完成后，将它们组合起来采用五阶龙格－库塔法直接轨迹追踪，实现了离子束光柱体的一体化设计，并利用蒙特卡罗方法仿真了离子间的库仑力效应。

Soap is easy to combine with the ion of calcium and magnesium in alkalescency condition. The water insoluble lime soaps which deposit on the skin and may block the pores, cause skin irritation and skin hyper susceptibility.

而皂基皂不可避免的会与水中钙离子，镁离子在碱性环境下形成不能溶解的皂垢，很容易沉积在皮肤上，可能阻塞毛孔，引起皮肤的刺激，引发皮肤过敏。

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。