甲基化作用

In order to understand the mechanisms of cation surfactant changing the wettability of solid surface, the effect of CTAB on the wettability is studied based on washburn method and microscopic experiments.

为了解阳离子表面活性剂改变固体表面润湿性的机理，首先用washburn法和微观实验研究了十六烷基三甲基溴化铵对润湿性的影响，然后从吸附状态及化学反应的角度分析了CTAB与砂岩表面的作用机理。

The influence of reed produced allelopathy material eathyl-2-methyl acetoacetate on respiration action, photosynthesis action and antioxidant enzymes system of Microcystis aeroginosa were studied.

研究了芦苇产生的化感物质2-甲基乙酰乙酸乙酯对铜绿微囊藻呼吸作用、光合作用和抗氧化酶体系的影响。

Aegle marmelos ; Anti-lipid peroxidation ; 4-Methoxy-1-methyl-2-quinolone; Superoxide dismutase; Catalase ; GSH-peroxi

木桔；抗脂质过氧化作用； 4－甲氧基－1－甲基－2－喹诺酮；超氧化物岐化酶；过氧化氢酶；谷胱甘肽过氧化物酶

The results show that there is intensive synergistic effect among cetyltrimethylammonium bromide, benzalacetone and polyethylene glycol. A bright and compact nanocrystalline zinc was produced due to the coexistence of such three additives.

结果表明，十六烷基三甲基溴化铵、4-苯基-3-丁烯-2-酮和聚乙二醇三种添加剂之间具有较强的协同作用，采用三者组成的混合添加剂可制备出光亮致密的纳米晶锌镀层。

Effect of different surfactants on the UV intensity of Al(superscript 3+)-MXFX have been studied. Is Cetyl Trimethy-lammonium Bromide can increase the UV intensity of Al(superscript 3+)-MXFX is discovered. Based on this reaction, the reaction conditions in detail and proposed a simple, rapid and sensitive new method for the determination of MXFX by UV method is inve stigated. This method has been applied for the determination of MXFX in tablet with satisfactory results.

通过研究不同表面活性剂对Al(上标 3+)-莫西沙星体系紫外特性的影响，发现十六烷基三甲基溴化铵对该体系有显著的增敏作用；系统研究了CTMAB-Al(上标 3+)-MXFX反应体系的紫外特性，利用这一反应体系，建立了简单、快速、灵敏的测定莫西沙星的紫外分光光度法，选择了最佳实验条件，并将此方法用于莫西沙星片剂的测定，结果满意。

To investigate the effect of surfactant self-assembling properties on the template synthesis of porous inorganic materials, the critical micelle concentration of surfactant cetyl trimethylammonium bromide was measured in both water and aqueous ethanol solvent using steady-state fluorescence techniques.

为了研究乙醇－水混合溶液中表面活性剂的自组装特性对多孔无机材料模板法合成的作用，采用稳态荧光法测定了乙醇－水混合溶剂的组成变化对十六烷基三甲基溴化铵临界胶束浓度的影响。

The results show that in the protonation process, because of the effect of meso-(p-methylpyridyl), the changes of the structure and bond charge population are obvious; the frontier molecular orbitals have opposite change trend with the case of meso-yridyl, the rapid exchanges of inner hydrogens of the protonated diacid with solvent protons become more difficult.

结果表明，由于m-甲基吡啶的影响，在质子化过程中结构和键电荷布居有明显变化；前沿分子轨道具有与四吡啶基情形相反的变化趋势，质子化二酸与溶液质子的快速交换作用也变得更困难了。

To the best of our knowledge, the relationship of surface acitivity of catanionic surfactant with temperature has not been revealed, and the catanionic surfactant has not been employed in organic reaction also.In this work, surface tensions of equimolar cetyl trimethylammonium bromide-sodium dodecyl sulfate at different temperatures were determined and compared with those of corresponding individual surfactants.

为扩展复配体系的应用，本论文选取等摩尔十六烷基三甲基溴化铵—十二烷基硫酸钠复配体系及它们的单一体系为研究对象，观察到随着温度的升高，CTAB及SDS表面活性变化不大，而等摩尔CTAB-SDS的表面活性显著增强，这是由于升温减弱了其强烈的静电作用，并通过溶解性实验结果进一步证实。

The uniform nano-sized titanic oxide mesoporous thin film which can be coated repeatedly was prepared by adding tetrahydrofuran which acts as dispersant to micro-emulsion system consisting of water,cyclohexane,hexadecyl trimethyl ammonium bromide and butyl alcohol.

通过在水、环己烷、十六烷基三甲基溴化铵、正丁醇4组分构成的微乳液体系中加入起分散作用的四氢呋喃，制备出均匀、可重复成膜的纳米氧化钛介孔薄膜。

Sulfur compounds in the diesel were selectively derived into methylsulfonium salts by reacting with iodomethane in the presence of silver tetrafluoroborate, and characterized by positive-ion electrospray ionization fourier transform ion cyclotron resonance.

在四氟硼酸银的催化作用下，以碘甲烷对直馏柴油进行甲基衍生化反应，使其中的有机硫化物转变成极性较强的锍盐，再用电喷雾－傅立叶变换离子回旋共振质谱仪进行检测。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。