电子显微镜

Its rule of change was obtained. On the basis of other studies, the flocculation kinetics and flocs structure was studied. By making some assumptions, collision frequency were presented. Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict flocs number and size during flocculation of Yellow River's loess particles without using empirical parameters. The TEM and SEM were used to obsever flocs in the study of floc structure. The flocculation was divided as flocculi, floc and floc aggregate. The flocs structure model was established by assumption that particles position in floc accords with tetrahedron. The fractal dimension of model and experimental flocs was found to be coincident. So the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent.

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能眵反映高分子絮凝黄河泥沙生成的絮体结构。

Its rule of change was obtained.On the basis of other studies,the flocculation kinetics and floes structure was studied. By making some assumptions, collision frequency were presented.Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict floes number and size during flocculation of Yellow River's loess particles without using empirical parameters.The TEM and SEM were used to obsever floes in the study of floe structure.The flocculation was divided as flocculi,floc and floe aggregate.The floes structure model was established by assumption that particles position in floe accords with tetrahedron.The fractal dimension of model and experimental floes was found to be coincidentSo the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符西安建筑科技大学博士学位论文合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能够反映高分子絮凝黄河泥沙生成的絮体结构。

Their morphologies were characterized with scanning electron microscopy, transmission electron m...

通过扫描电子显微镜、透射电子显微镜的观察，以及对产物的拉曼光谱分析发现，用本方法制备得到的碳纳米管形态良好，石墨化程度高。

Field emission scanning electron microscopy shows the diameter of Bi2Sr2CaCu2Oy nanowires is nearly 20 nm and the length is up to 1 μm. High-resolution transmission electron microscopy also shows the configuration of the polycrystalline nanowires with average diameters of 20nm.

利用场发射扫描式电子显微镜及高解析度穿透式电子显微镜来观察奈米线的外观及结构，奈米线的粗细约为20奈米，长度约为1微米，为多晶结构。

In this work, nanostructure samples of La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）were prepared by hydrothermal-precipitation method . The structural characterization of the powder samples were done by X-ray diffraction. XRD patterns showed that all the samples ate single perovskite-type phase withoutother impurity or secondary phase. The shape and size of samples were performed on Scanning Electron Microscopy. SEM photographs investigated that temperature of hydrothermal effects the phase of samples and alkalinity of the reaction mixture by ΔTad-T curve measurement device at low magnetic fielded

本论文采用水热共沉淀退火法制备了La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）系纳米结构，用X射线衍射仪确定产物为单相钙钛矿结构，无任何杂峰及第二相；用扫描电子显微镜与透射电子显微镜分析了产物的大小和形貌，发现水热温度对产物的形成起决定作用，随着温度的升高，产物由薄膜状向丝状转变，而溶液的碱度可控制产物的形貌和大小，当碱度为6.35mol/L，水热温度为240 C时，La0.6Ca0.4MnO3的主要形貌为纳米丝并有少量纳米颗粒，纳米丝平均直径为40nm；最后测量了粉末样品在低磁场（1.4T）下的磁热效应，发现水热共沉淀退火法制备样品的最大绝热温度明显高于球磨法制备样品的最大绝热温变。

The single-walled carbon nanotubes were characterized by means of transmission electron microscopy , high-resolution transmission electron microscopy and Raman.

单壁碳纳米管采用透射电子显微镜、高分辨透射电子显微镜和拉曼光谱进行表征。

The polyurea coating was tested with Taber tribomachine and the highp ressure water jet erosion tester for studying the wear behavior of polyure coating under conditions of dry friction and highspeed water jet contained sand. The morphology of the coating was observed with SEM and Chromatic confocal 3D Profiler. The surface component of test samp les was measured by FT2IR Spectrometer and Electron Energy Disperse Spectroscopy. The p roperties of polyurea coating under two testing conditionswas analyzed.

为研究聚脲涂层在干摩擦条件下和高速含砂水流冲蚀条件下的性能变化情况，用 Taber 磨损试验机和高速含沙水射冲蚀磨损试验机测试了聚脲涂层的磨损性能，用扫描电子显微镜和白光共焦三维轮廓仪观测涂层的磨损表面形貌，用表面红外光谱和电子显微镜能谱元素分析了涂层表面试验前后的组分变化，分析了涂层在2种摩擦条件下的磨损情况。

This structure can serve as a field emission device or a probe of scanning probe microscope.

该结构的材料可以用作扫描电子显微镜探针和场发射电子显微镜的针尖。

Electron microscope of the scheme of chart of X ray diffraction that analyses composite material, transmission and photograph of scanning electron microscope make clear: OMMT basically is with coming off condition disperses in PLA matrix, form in order to come off model give priority to, the accept rice that at the same time existence inserts a structure composite material, the affiliation of OMMT makes the drawing section of composite material ruptures to tenacity by brittleness change.

分析复合材料的X射线衍射谱图、透射电子显微镜和扫描电子显微镜照片表明：OMMT主要以剥离状态分散在PLA基体中，形成以剥离型为主、同时存在插层结构的纳米复合材料，OMMT的加入使复合材料的拉伸断面由脆性断裂向韧性断裂转变。

The article introduced the measuring technique of the grain size of ceramic alpha alumina, including electronic microscope, Laue X-ray diffraction, nitrogen absorption specific surface area, infrared spectra and grinding method.

本文介绍了电子显微镜、X射线衍射、氮吸附小比表面法、红外光谱结构分析、研磨法等用于陶瓷氧化铝晶粒度测定的情况，通过对比，指出了电子显微镜能够真实地反映微观世界，是多种分析方法的基

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。