正电
- positive electricity
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[positive electricity] 以质子为基本单位的电。当物体产生缺少电子的效应时的现象
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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 .
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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 .
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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
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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 .
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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
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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 .
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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 ~ .
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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 .
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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 .
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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 .
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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 .
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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
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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 .
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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
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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 .
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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 .
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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 .
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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 .
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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
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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
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .