正电

用量子化学的方法研究烷基糖苷反应的机理，计算表明：4号位的C具有较高的正电性，而反应历程的计算表明该反应是个活化能比较高的反应。

It is tried to explain the mechanism with quantum chemistry with the results that C4 has high positive electricity and the reaction has high activation energy .

原子核带有一定量的正电，与全部飞行中的电子所带的负电相等。

The nucleus carries an amount of positive electricity equal to the negative electricity carried by all the flying electrons .

pH值和温度对氢氧化铝镁正电溶胶的稳定性影响

Effect of pH and temperature on stability of aluminium magnesium hydroxide positive sol

DNA的磷酸骨架所带的负电荷只能与表面带正电性的载体结合。

The negatively charge of phosphate backbone of DNA could be binded to the positively charged of vector .

CNT/CB填充PE材料正电温度系数特性的研究

The study on the PTC effect of CNT / CB filled PE composite

CS、OCM-CS、16-CS和Lys-CS表面改性的脂质体和磁性脂质体的粒径有所增加，表面电性由负电变为正电。

After modification , diameter of liposome and magnetic liposome increased and surface charge become positve from negtive .

其最佳絮凝pH范围为6&8.5，最佳絮凝形态是产生Fe（OH）0，·后在此基础上进一步聚合成了带正电的铁的高聚物。

The best pH range was 6 - 8.5 . The best flocculation species was the iron hydrolysis polymer after forming Fe ( OFT ) 4 ~ .

电泳实验结果表明，当pH值为5.0～10.0时，PAC均能保持正电性。

The electrophoresis test results showed that , at pH values of 5.0 ~ 10.0 , PAC could remain its positive electrical property .

酸性水介质中，CeO2表面带正电，且pH为4左右时Zeta电位最大；

In the acidic water , surface of CeO2 nanoparticles has positive charge and Zeta potential is most at pH 4 or so .

利用X射线衍射及微电泳的方法研究了镁铝氢氧化物正电溶胶。

Using intercalation method , the positive sol of magnesium aluminum hydroxide was prepared , and its crystal structure and ζ potential were studied with XRD and microelectrophoresis instruments .

纳米CeO2颗粒在酸性水介质中表面带正电，在碱性水介质中表面带负电，Zeta电位分别在pH值为4和11左右时较高，相应润湿性和分散性较好；

Zeta potential is higher when pH value is about 4 or 11 , corresponding wettability and dispersion are better .

MSF正电胶泥浆在提103深井中的应用

Application of MSF MMH Drilling Muds in Deep Ti Well No.103

结果显示，提高柱温或pH，流动相中添加荷正电的对离子，均可改善帕尼培南峰形；

Results showed that the improvement of peak profile was favored by an increasement of column temperature or pH , adding of a positively charged pairing ion in the mobile phase .

正电性磁性氧化铁胶粒负载钯催化的Suzuki偶联反应

Suzuki Coupling Reaction Catalyzed by Palladium Supported on Positively Charged Colloids of Magnetic Iron Oxide

为此，进行了MMH正电胶钻井液的室内试验和现场应用。

Laboratory test and field practice of MMH drilling fluid were conducted .

琼脂糖凝胶电泳、荧光置换、粒径和电位测试的结果表明在N/P比2以上时，DNA与阳离子纳米粒形成了稳定且带正电的复合物。

DNA was shown to form stable and positively charged complexes with cationic nanoparticles at N / P ratios above 2 by agarose gel electrophoresis , fluorescence displacement , particle size and zeta potential measurements .

文中还对MMH正电胶钻井液保护裂缝性储层的机理进行了分析。

Meanwhile , the mechanism of MMH drilling fluid protecting fractured reservoir is analysed .

在油层保护方面，介绍了有机正电胶BPS对油层保护的试验结果。

The testing results of organic positive colloid BPS on reservoir protection are also described .

正电性多肽copoly（Lys/Tyr）与磷脂膜的相互作用研究

Interaction of cationic copoly ( Lys / Tyr ) with phospholipid membranes

PEC有机正电胶钻井液体系在BZ25-1油田的应用

Application of the PEC drilling fluid system in BZ 25-1 oilfield

阐述了正电胶（MMH）钻井液体系的特性，并对其机理进行了探讨，最后对它的应用情况作了详细介绍。

MMH drilling fluid system is described , its mechanism is discussed and its application is introduced in the paper .

本文介绍了一种新型水处理剂&氢氧化铝镁正电纳米粉末（AMH）。

A new type of water treatment agent-aluminum-magnesium hydroxide positive nanopowder ( AMH ) - was introduced .

在pH7的PBS缓冲液中，负电性的GOx通过静电吸附被固定在正电性的ZnO纳米棒上。

In a PBS buffer with a pH value of 7.4 , negatively charged GOx is immobilized on positively charged ZnO nanorods through electrostatic interaction .

以混合金属氢氧化物正电溶胶（MMH）处理模拟水样，对实验条件和主要影响因素进行了研究。

The tests to treat the synthesized samples and the TOR wastewater really from oilfield using mixed metal hydroxide positive sol ( MMH ) were made .

结果表明：PSAF水解聚合形成物的电荷量随Al3+/Fe3+摩尔比的减小以及SiO2浓度和碱化度B的增大而逐渐降低，在酸性至中性范围内荷正电，在pH值大于7.5时荷负电。

The results have shown : the charge amount of PSAF in water solution gradually decreases with the reduction of molar rate of Al 3 + / Fe 3 + and increases of SiO_2 concentration and alkalinity B .

结果表明，方解石zeta电位在不同的固体浓度下有很大的差别，低固体浓度下方解石荷负电，高固体浓度下荷正电。

The results showed the zeta potential of calcite is heavily dependent on solid concentration . The zeta potential of calcite is negative at low solid concentrations and positive at high solid concentrations .

顺酐化聚丁二烯（MPB）经胺化反应后在适当的酸中和后才可成为带正电离子的电泳涂料。

Maleated polybutadiene ( MPB ) must be reacted with diamine to produce imide polybutadiene which was neutralized by acid to make cathodic electrodeposted coating .

通过对正电胶、聚合物、聚磺钻井液特点进行分析，在室内实验的基础上，设计研究了MMH聚合物-MMH聚磺钻井液体系。

Based on the laboratory experiments , MMH polymer MMH polysulfonate drilling fluids system is developed through analyzing the properties of positive colloid , polymers and polysulfonate muds .

根据粘土表面改性对其絮凝作用影响的理论模型，提出在粘土中引入MMH（混合金属层状氢氧化物正电胶体）的改性方法；

According to theoretical model on effect of surface modification of clays on coagulation , the improved method adding MMH ( Mixed Metal Layered Hydroxide ) in clays is proposed .

ZrO2微粒因吸附镀液中的H+而带正电，有益于其阴极扩散，从而增加镀层中粉体的含量；

ZrO_2 is positively charged because of the adsorption of H ~ + . Therefore , it is beneficial to cathode pervasion and increasing content of powder in coating .