阳离子

The therapy groups displayed significant improvements in neuromotor functions and survivals of neuron and oligodendrocyte compared with control groups. These results demonstrated the neuroprotect roles of GGF2, and cationic liposome-mediated GGF2 transgene therapy has potential possibility.

结果：1、大鼠LFP致伤后3—7天，GGF2 mRNA在海马CAl区、CA2区、CA3区、DG及皮层表达明显增加。2、阳离子脂质体介导GGF2转基因治疗可促进大鼠伤后行为学的恢复，可促进损伤区神经元及少突胶质细胞的存活。3、原核表达方法得到GGF2重组蛋白。

Synchronous fluorescence showed that the addition of POM could enhance the fluorescence intensity of CV, which was explained in terms of the hindrance of the formation of the nonfluorescent twisted intramolecular charge transfer states of CV by the assembled POM-CV system, and the surfactant CTAB could enhance the luminescence by coordinated assembly.

具有同样Keggin结构的4种稀土杂多阴离子与结晶紫的作用总体一致，稀土元素不同体系的光活性会表现出一定的差异。实验证实，阳离子表面活性剂CTAB的存在会进一步增强体系的发光活性。三者协同作用，形成了更稳定的杂多阴离子－CV-CTAB三元超分子体系，而β-CD的存在对稀土杂多酸盐与结晶紫的超分子体系稳定不利。

The influence of cation and nonion surfactants on the preferred orientation was complicated.

阳离子和非离子表面活性剂对镀镍层的晶面取向影响比较复杂。

Organophilic montmorillonite is obtained by the ion exchange of organic ammonium compound and its interlayer space changes from 1.31nm to 2.01nm.

通过阳离子交换的方法将蒙脱土进行有机化处理，使蒙脱土的片层间距从原来的1.31nm增加到2.01nm。

The organophilic montmorillonites with increased interlayer spacings were prepared from hydrophilic clay by cation exchange with trimethylcetyl ammonium bromide.

通过阳离子交换的方法使蒙脱土由亲水性变成亲油性且层间距扩大。

The spectroscopic analysis, TGA and X-ray diffraction showed that the organic reagent had intercalated into the layers of MMT, and the interlayer space of the organophilic montmorillonite modified by compound surfactants was larger than that of the CTAB modified organophilic montmorillonite.

红外光谱分析、热重分析和X-射线衍射分析表明，有机插层剂已进入蒙脱土的层间，CTAB/己内酰胺复合插层有机蒙脱土的层间距大于单阳离子CTAB插层有机蒙脱土的层间距。

The new opinion and mechanism that the simultaneously adsorption of complex pollution of both organic and heavy metals will be achieved on soil modified with amphoteric surface modifying agent, which have both charged group and organophilic group on one ASMA molecule, were proposed at first time, and its rationality was testified at the same time; The 50% was the critical CTMAB modifying ratio of soil CEC at which the organophilic bond modifying mechanism was emerged; The thermodynamic characteristics of adsorption of OPT and HMP on OMS were discovered ; The study revealed the surface peculiarity of OMS that the modifying agent were distributed at uneven scatter mode and multi-characters surface were coexisted on surface of OMS, revealed the adsorption peculiarity of OMS that multi-mechanisms were coexisted, confirmed the unequal charge amount modifying mode of OMS in which dual-modifying mechanism of both ion exchange and OPB were processed at the same time, and confirmed that the adsorption hobby to CTMAB was higher than that to Ca2+ on Lou soil.

首次提出了用两性表面修饰剂对土壤进行修饰改性，利用两性表面修饰剂所具有的荷电基团和疏水基团达到对土壤中有机、重金属污染物同时吸附的思路和机理，并通过实验证实了所提设想的合理性；发现了土壤CEC值的50%修饰比例是CTMAB开始显现以疏水键机制对土土样表面进行修饰的临界点；揭示了有机修饰改性土对有机物、重金属吸附过程的热力学特征，填补了该项研究工作的空白；阐明了修饰剂在改性土表面呈分散态的非均匀分布，改性土表面具有不同性质表面共存的表面特征和对污染物多机制共存的吸附特征，确定了阳离子表面修饰剂在土表面的修饰是一种离子交换和疏水键结合两种机制相伴并行且为非等电荷量交换的修饰反应模式，以及土具有对CTMAB的吸附偏好性远大于对钙离子吸附偏好性的特征。

In acid pulp, the depressing abilities of reagents on diaspore are in the order of hydroxamic acid starch＞dialdehyde starch＞carboxymethyl starch＞cationic starch＞primary starch. In addition, hydroxamic acid starch and carboxymethyl starch can activate kaolinite without influence on the recoveries of pyrophyllite and illite, so the two reagents have great potential and prospect to be the depressant of diaspore and the activator of kaolinite in bauxite reverse flotation.(3) By oximation of the copolymer of acrylamide and methyl acrylate, hydroxamic acid polyacrylamide is synthesized.

3对丙烯酰胺和丙烯酸甲酯的共聚物肟化制得氧肟酸聚丙烯酰胺，将它同非离子聚丙烯酰胺、阴离子聚丙烯酰胺、阳离子聚丙烯酰胺和两性聚丙烯酰胺分别应用于四种矿物的单矿物浮选试验，结果显示，改性聚丙烯酰胺对一水硬铝石、高岭石和伊利石均具有活化作用，其中，药剂对高岭石的活化最强，使它的回收率在整个pH值范围达到80％左右，在一定pH条件下超过一水硬铝石的回收率，解决了高岭石难浮选的问题。

It have been observed that oxonium ion reacted with water more easily than with THF. So water could be used as ceasing reagent to control the molecular weight of the polymer.

本文还对四氢呋喃、环氧丁烷和环氧乙烷阳离子开环聚合反应中，分子内尾咬、扩环这一典型的副反应进行了理论研究。

Thepotential energy surface of these reactions were plotted, and the energy barrier of the reaction between THF and secondary oxonium ion was determined to be 182.0.116 kJ/mol.

本文进一步对四氢呋喃阳离子开环聚合反应过程中，氧鎓离子与水反应的机理进行了分析。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。