查询词典 anion

In this paper the thymus DNA of calf and the pBs plasmid are the main objects of our studies in ultraweak luminescence. By means of PIAS(Photon-counting image acquisition), ultraweak luminescence detector and Lambda Bio 40 of UV/VIS spectrophotometer, we studied the UL of DNA induced by the three oxygen free radicals: singlet oxygen Oa, hydroxy radical and superoxide anion(O2 ). We found that the OH can greatly increase the UL intensity of DNA.

本论文以小牛胸腺DNA和质粒pBs为实验材料，利用光子图像探测系统(Photon-counting image acquistion，PIAS)、微弱发光测量仪和UV／VIS分光光度计和生物统计学的成组比较法原理对单线态氧(~1O_2)、羟自由基、超氧阴离子(O_2~-)三种氧自由基诱导DNA超弱发光的变化过程进行了研究，结果发现这三种氧自由基中·OH能诱导DNA的超弱发光发生显著的增强变化，而其他两种氧自由基对DNA的超弱发光并无显著诱导作用。

In the paper,a PVC membrane picric acid anion selective electrode is developed using Bromhexadecyl pyridine picrate ion pair as the active component and dioctyl phthalate as the plasticizer.

本文用苦味酸溴代十六烷基吡啶离子对作为电活性物质，以邻苯二甲酸二辛酯为增塑剂，研制成以PVC为基质膜的苦味酸离子选择电极。

STUDY ON SYNTHESIS,CHARACTERIZATION AND CATALYSIS OF PILLARED ANION CLAY I.

文献名称柱撑阴离子粘土的合成、表征及催化性能研I。

The effect of additives combined polyalcohol anion surface active agent with alkali activator or high efficiency sulfonate water-reducing agent on physic-chemical performance of slag powder and slag-cement system pastes have been studied.

选择多元醇类阴离子表面活性剂分别与碱性激发剂和高效磺酸盐减水剂进行复合，研究了复合添加剂对矿渣粉体和矿渣-水泥浆体的物理化学性质的影响。

ABSTRACT The crystallization process is investigated on the basis of growth unit model of anion coordination polyhedron.

摘 要 在负离子配位多面体生长基元模型的基础上深入研究了晶粒的结晶过程。

Results showed that the inhibition type of ACE was competitive.Finally, we make componentⅡthrough further purity by using DEAE Anion exchange column and Sephadex LH-20. After that com- ponentⅡwas separated to two parts.

六、将粗分物组分Ⅱ用DEAE阴离子交换柱和SephadexLH-20继续分离纯化，最终得到两个组分，用反相高效液相色谱C18柱检测其纯度。

In the air includes the cation and the anion, but between the positive and negative ion must obtain the certain balance.

空气中含有正离子与负离子，而正负离子之间必须取得一定的平衡。

That is less copper anion in the environment. PASP has the effect of corrosion inhibition in hydrochloric acid solution. In addition the potation of cathode summit current turned negative as increasing PASP concentration, and the potential of anode summit current turned positive, it can constrain the corrosion of copper. That is to say PASP is a mixed corrosion inhibitor and can constrain the corrosion of copper surface.

循环伏安测试结果表明： PASP的加入同时抑制了铜表面的阴阳极反应，使阴极峰和阳极峰电流都减弱，说明此环境中的铜离子的含量较少，PASP对铜在盐酸中有缓蚀作用；另外阴极峰电位随着PASP添加浓度的增大而依次变负，而阳极峰电位依次变正，抑制了铜的腐蚀，说明PASP是混合型缓蚀剂，有效地阻止了铜表面的腐蚀。

Punched tape, punch tapeAn anion in which carbon carries a negative charge and an unshared pair of electrons.

负碳离子，阴碳离子一种阴离子，其中碳带一个负电荷和一个非共用电子对

Tourmaline with the properties of pyroelectricity and piezoelectricity is a kind of functional material that can spontaneously produce anion without adscititious energy.

电气石具有热电性和压电性，是一种不需外加能源就能自发产生负离子的功能材料。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷