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Gemini surfactants are novel surfactant with especial molecule structure, which are made up of at least two hydrophilic groups and two hydrophobic groups. They are connected at the level of the head groups by a spacer groups through chemical bond (covalent bond or electrovalent bond).

孪连表面活性剂是一种结构较为特殊的新型表面活性剂,其分子中至少含有两个亲水基和两条疏水链,在其亲水基或靠近亲水基处,由联接基团通过化学键联接在一起。

Ionize molecules dissolve in water after the connected with the pro-oil-based baseband Yin charged hydrophilic surfactant.

分子溶于水发生电离后,与亲油基相连的亲水基带阴电荷的表面活性剂。

The result indicated that ripe fish can strong physique by breeding in reinforcement, using oxytocic to make ripe fish grow synchronously, increase fertility rate of ripe fish, using slack water lo charge can increase the hatchabilily over95%.

结果表明,亲鱼经过强化培育以后,可明显增强体质,利用混合药物催产,能使亲鱼生长同步,鱼卵受精率提高,采用静水充气方法,可使孵化率高达95%上。

The characterization of structure of modified MWNTs was carried out by means of fourier-transform infrared spectra,thermal gravimetric analyses and transmission electron microscopy.Photographs of dispers...

并考察了修饰前弱亲油性的纯碳纳米管、酸化后亲水性的碳纳米管和修饰后两亲性碳纳米管这3种碳纳米管在水和氯仿形成的两相体系中的分散情况,观察到所制备的两亲性碳纳米管能够均匀分散在油水两相界面上。

The sizes of the self-assembly micelles of the amphiphilic block copolymers and the effects werestudied by dynamic light scattering and UV-visible spectrophotometer. The micelle sizes werelargely influenced bythe hydrophobic chain content in the copolymer, the properties of the solvent and the copolymer concentration in the organic phase. The morphology of the micelles was investigated by transmission electron microscopy. Theresults showed that the micelles appeared spheres with inner core and outer shell. The critical association concentrations were determined by pyrene monomer fluorescence probe technology. The degradability of copolymer was studied by the loss of the intrinsic viscosity in the degradation process. The results indicated that the degradation rate of PECL was slower thanthat of PELLA and PEDLLA. The stability of the copolymer micelle dispersion was examined by measuring the critical flocculation concentration, which gradually decreased with increasing the content of thehydrophobic chain in the copolymer. The rheological results showed thatthe viscosity ofthe micelle dispersion with higher content of PEG segments was firstly decreased and then increased with the increasingthe temperature. Otherwise, the variation of viscosity was irregular. The viscosity of the micelle dispersion increased with the increase of the electrolyte (Na 2SO 4) concentrations. Polymer micelles paclitaxel was prepared by self-emulsification/solvent evaporation method and solid dispersion technique with amphiphilic block polymers as the carrier material.

运用动态光散射和紫外分光光度计研究了两亲性嵌段共聚物自组装胶束的粒径及其影响因素,结果表明,自组装胶束的形成机理受制备方式的控制,胶束的粒径随着共聚物相对分子质量或疏水嵌段相对分子质量和有机相中共聚物浓度的增大而增大,随着有机溶剂的水溶性的增强而减小;采用透射电镜观察胶束的形态结构,发现胶束呈具有核壳结构的均匀球形;采用芘荧光探针法测两亲性嵌段共聚物的临界聚集浓度;通过降解过程中共聚物特性粘度的变化研究两亲性共聚物的降解性能,发现与PELLA和PEDLLA的相比,PECL 降解速率较慢;随着共聚物中疏水嵌段含量的增大,纳米分散液的稳定性逐渐下降;PEG含量高的PEDLLA纳米分散液随着温度的升高,纳米分散液的粘度先下降然后增大,反之,没有规律性,且随着电解质Na 2SO 4浓度的增大,体系粘度增大。

This project includes the followings: high precision aluminum belt, coating aluminum foil, large shape aluminum, pipe of aluminum and its alloy, aluminum gear, aluminum heat radiator, compound aluminum pipes, colored coating aluminum sheet, aluminum building wall, high quality electrolysis aluminum foil, special shape aluminum, canned aluminum materials, PS plank, aluminum foil for air conditioner, aviation aluminum sheet, cold treated aluminum sheet, aluminum decoration sheet, plastic aluminum pipe, erosion materials, food package materials and so on.

三、项目简介:铝加工发展项目包括:高精度铝板带;子铝箔;亲水铝箔;大型铝型材;涂层铝材;铝及铝合金铸轧带材铝合金管;铝合金轮;铝散热器;铝塑复合管;彩色涂层铝板;铝幕墙板;高性能电解铝容箔;铝合金特种型材;易拉罐料; PS 板;空调箔;航空用铝板;冷轧铝板、带、箔;建筑装饰用铝板;铝塑管;铝建筑,耐腐蚀材料和食品包装材料。

We spend most of the spot market price before buying, the Suzhou River scenery belong to us.

我们是花了大价钱才买的亲水楼盘,苏州河的风景属于我们。

Hydrophilic FAP had a self-conditioning mechanism, and loading and glazing in the mold polishing process did not occur.

亲水FAP的进行了自我调节机制,以及装载和玻璃窗,在模具抛光过程中并没有出现。

The viscosity and surface tension of lubricant have been qualitatively analyzed and predicted by means of partial least squares method and quantitatively calculated using artificial neural network with structural parameters as features. The structural parameters involved distribution coefficient, molecular volume. The qualitatively or quantitatively calculated results are in agreement with experimental results.

用分子碎片法计算表示润滑剂分子结构的体积参数、电负性参数、亲水-疏水性等参数,结合偏最小二乘法和人工神经网络方法对分子结构与表面张力和粘度之间的定量关系进行了计算及预报,结果与实验值符合较好。

Methods Streptomycin and dihydrostreptomycin were extracted from honey samples using a liquid extraction with a phosphate buffer followed by a solid-phase extraction based on weak cation-exchange columns. After sample preparation, the hydrophilic interaction chromatography was used to retain streptomycin and dihydrostreptomycin on the column for the separation of the analytes from endogenous compounds. The aminoglycosides were detected and quantified with electrospray ionization tandem mass spectrometry.

方法用磷酸盐缓冲溶液提取蜂蜜中的链霉素和双氢链霉素后,经弱阳离子交换柱进行固相萃取,样品制备后采用亲水作用色谱,使链霉素和双氢链霉素实现保留,从而与内源性物质达到分离,采用电喷雾离子化串联质谱法检测和定量。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。