粒子

Thiol groups were good to be used in functionalizing gold nanoparticles, and ester bond formation and breakage played the major role in this research. Thioctic acid and 11-mercapto-1-undecanol were used to functionalize the gold nanoparticles and form ester bond by using the carboxylic acid group on thioctic acid and the hydroxyl group on 11-mercapto-1-undecanol. Concentrated sulfuric acid was used to be the catalyst in this reaction, and sodium hydroxide was added for the proceeding of the reverse reaction.

硫醇官能基在金奈米粒子的修饰有很好的效果，利用带有硫醇官能基之tioctic acid 与11-mercapto-1-undecanol (11-MUDO)分子修饰在金奈米粒子上，并使TA上之羧基和11-MUDO上之羟基脱水生成酯化键，浓硫酸则是反应中的催化剂，而氢氧化钠则可促使系统进行逆反应。

The laser granulometric analysis method can replace traditional methods due to its reliability. granulometric analysis ; correlation study ; the South Yellow Sea

沉析法适用于粒径小于0.063mm的物质，此法存在着检测速度慢、重复性差、对非球型粒子误差大、不适用于混合物料(即粒子比重必须一致才能较准确)、动态范围窄等缺

Particle size distribution;granulometric distribution

各种粒径范围的粒子质量或粒数分别占粒子总质量或总粒数的百分率，也称分散度。

These processes are not only complicated, but the organic ligands are hazardable. Therefore, it is important to study some simpler and feasible synthesized methods to make QDs water soluble directly.

本文第一部分的实验工作是以巯基丙酸（HS-CH2CH2COOH）为稳定剂，在水溶液中合成了具有窄而对称的带边发射的CdTe半导体纳米粒子（FWHM=40 nm，尺寸为3 nm，量子效率为20-30%），并用此纳米粒子来标记生物分子牛血清白蛋白。

According to Hydrophile and Lipophile Balance, the suitable surfactants have been selected and put into lubricating oil with single nanometer particles or two kinds of nano-materials, The tribology tests were carried out in four-ball tribotester.

介绍了纳米材料的制备，根据亲水亲油平衡值选择了合适的表面活性剂，并将其加入到含有单种或两种复合纳米粒子的润滑油中进行表面改性，采用四球摩擦磨损试验机测定含纳米粒子的润滑油的摩擦学性能。

Meanwhile, it is also illustrates that the smaller chromium carbides have less restriction to forming thin splats than larger ones, which beneficial to limit the size of pieces removed by impact of the sand particles, and the higher volume fraction of small chromium carbide may effect the erosion through enhancing interlamellar bonding of the splats which leads to increase the erosion resistance of the coating.

揭示了细小碳化物颗粒有利于获得扁平粒子厚度较小的涂层结构，可减小涂层冲蚀磨损过程中每次剥落的体积；较高含量的细小碳化物颗粒有利于提高涂层扁平粒子间的结合，从而提高涂层抗冲蚀磨损性能。

Through the regression analysis of critical radius ,it is show that Zn nanoparticles' diameters are determined by reaction pressure and irrelated to the rate of airflow.

标 签 Zn/ZnO 纳米粒子激光化学临界粒子半径r* Zn/ZnO nanoparticles laser chemistry critical radius r

Results showed that when AA amount was more than 0.04 mol,anomalous particles were generated and heterogeneity in the formation of anomalous structure was observed in the treated latices With the increase of amounts of AA and the decrease of the mass ratio of MMA to EA,the percentage of anomalous particles increased,and their volume expansion increased and then decreased.

结果表明，当AA含量大于0.04mol时，胶乳中开始出现异型结构粒子，随着AA用量的增加和MMA/EA质量比的减小，异型粒子在胶乳中所占比例增加，胶粒体积先增大后减小。

The silicon-acrylic latices with core-shell structures were prepared by means of a"two-stage"emulsion copolymerization. The effect of constituents and proportion of core and shell parts on the properties of latex film were investigated, and their applications in water-borne wood coatings and elastic coatings were explored. The results indicate that wood coating and elastic silicon-acrylic coatings with good performance and zero VOC content can be prepared by suitable design of structure of silicon-acrylic latex particles.

通过&两段&乳液聚合的方法合成了具有芯／壳结构的硅丙乳液，研究了芯／壳乳液粒子结构及组成比例对聚合物漆膜性能的影响，并探讨了芯／壳乳液在水性木器涂料及弹性涂料中的应用，结果表明，通过对硅丙乳液粒子的结构设计，可以获得性能优良的零VOC含量的木器涂料和弹性硅丙涂料。

The equilibrium phase particles that induce the sensitivity of the quenching are not the direct reason that causes the alloy fracture; the microzone of PFZ around particles limits crack extension and coordinates deformation, this causes the formation of the ductile tension fracture.

引起淬火敏感性的平衡相粒子，不是造成合金断裂的直接原因，粒子周围的无析出微区起到了限制裂纹扩展和协调变形的作用，是合金形成延性拉伸断口的原因。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。