查询词典 resonance method

Magnetic Resonance Imaging, Integer Programming, Branch and Bound Method, Shimming

磁共振成像；整数规划；分支定界法；匀场

The main object of this research is to investigate synthesis of Cu23Cl Cu and CuO nanoparticles through electrospinning and heat-treated method The research is mainly focused on preparative parameter and the change of heat-treated temperature to form the nanoparticles inlaid in silicon fibers the shape and color change are dicussed First of all to prepare the Polyvinyl butyral and silica dioxide complex nanofiber by electrospinning and then to investigate different heat-treated temperature and reactive time to being an influence on the products The results detected by SEM XRD TEM EDS FTIR combined sol-gel process and electrospinning can prepare Polyvinyl butyral and silica complex nanofiber The experimental result is found when heat-treated temperature is 100~4750C it can produce Cu23Cl nanoparticles; Above 4750C~ 4900C it can produce Cu nanoparticles; Above 450~7000C it can produce CuO nanoparticles And the viscosity is lain between 20~40cp and the sol-gel process time is 3hr it can produce the thinner fibers The average diameter of the fibers are 107 88±21 01nm;Due to the nanoparticles inlaid in the silica fibers the thinner fibers can be inlaid the smaller nanoparticles so this is the result that the experiment is expected To calcine the complex fibers is to produce surface silica fibers contain Cu23Cl Cu and CuO nanoparticles due to surface plasma resonance it make the color of the fibers become yellowish green from light white green turn into the red nuclear finally As the experimental result to utilize sol-gel process combine electrospinning can produce porous silica fibers contain Cu23Cl Cu and CuO nanoparticles

本研究旨在探讨「利用放电纺丝和热处理法来合成Cu23Cl、Cu和CuO奈米粒」之研究，实验著重在制备参数与热处理温度变化对所形成的奈米粒镶嵌在二氧化矽纤维中的形态与颜色变化探讨。首先，利用放电纺丝法制备出聚乙烯醇缩丁醛及二氧化矽之奈米纤维，比较不同的热处理温度与反应时间的改变对产物生成产生影响，进而研究不同热处理温度和时间对生成奈米粒的影响。产物经由SEM、XRD、TEM、EDS和FTIR等仪器分析结果显示，结合溶胶-凝胶法(sol-gel process)和放电纺丝法可产生聚乙烯醇缩丁醛及二氧化矽复合奈米纤维。实验结果发现，若热处理温度在100~4750C下可得到Cu23Cl奈米粒，475~4900C 可得Cu奈米粒，450~7000C以上可得 CuO奈米粒。而黏度介於20~40cp间和溶胶-凝胶时间为3hr时，可产生直径比较细的纤维，纤维直径为107 88±21 01nm；且由於奈米金属颗粒镶嵌在二氧化矽纤维中，直径比较细的纤维，可以得到比较小的奈米金属颗粒，这与实验预期相符。而锻烧此复合物产生多孔的二氧化矽纤维并包含Cu23Cl、Cu和CuO奈米微粒时，由於表面电浆子共震关系，而使纤维颜色由淡白黄绿色变成黄绿色，再变红褐色。由实验结果得知，利用溶胶-凝胶法(sol-gel process)结合放电纺丝法和不同热处理温度，可产生Cu23Cl、Cu和CuO奈米粒镶嵌在二氧化矽纤维。

Finite Element Method was used to analyze the stress distribution,resonance frequency and the deformation of the cantilever.

采用有限元方法对静电驱动器的应力分布、翘起高度以及固有频率进行了数值计算。

This paper introduces the research results of techniques of testing PC pump oil well through one-year efforts. Which covers the mathematical models of a number of force characteristics strength analysis, and resonance critical problems of rotation rod-string in PC pump wells: resulting of testing method of polish-rod load and rotation rate on the basis of feasible demonstration and technical requirement analysis; study and manufacture of system of testing PC pump well, which involves sensor, collector ring, acquisition circuit and computer; research and determination of assistant technology of testing force on rotation polish-rod and formulation of testing force on polish-rod. A spot testing has been carried out by means of the above research fruit and good results have been achieved.The success testing results in has laid a strong foundation for the oil well diagnosis.

本论文介绍了对螺杆泵采油井的研究成果，其内容包括，对螺杆泵采油井中的旋转杆柱的若干受力特征、强度分析方法及共振临界问题进行数学建模；在可行性论证和技术需求分析的基础上，研究产生了对油井进行光杆负载和旋转速度测试的办法；研究制作了螺杆泵采油井测试系统，它包括传感器、集流环、采集电路和计算机等；研究确定了对实施旋转光杆测力的辅助工艺；制定了对光杆受力进行测试作法，利用以上研究成果实施了现场测试，并取得了理想的结果。

Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Jinan 250100Abstract A resonance light scattering method for the determination of critical micelle concentration of sodium dodecyl benzene sulfonate was proposed.

利用共振光散射技术在不引入探针的条件下，建立了室温下直接测定十二烷基苯磺酸钠的临界胶束浓度的方法。

And the main achievements of this thesis are listed as follows:1.Spectral characteristics of chirped phase-shifted fiber gratings are analyzed by the transfer matrix method combined with resonance theory.

本论文对几种特殊结构的光纤光栅进行了深入研究，发现一些具有潜在应用价值的新特性，提出了理论分析方法上的改进以及新的应用，取得的主要创新成果如下：1。

Microwave electron cyclotron resonance plasma sputtering method is a new technique used to synthesize good thinfilms in low temperature.

微波电子回旋共振（delectroncyclotronresonance.ECR）等离子体溅射法是能在低温下制备高质量薄膜的最新镀膜技术。

Ion cyclotron resonance heating is a necessary auxiliary heating method in EAST Tokomak nuclear fusion experiment.

离子回旋共振加热是EAST超导托卡马克核聚变实验中重要的辅助加热手段。

A numerical simulation by program computation was presented to study electron cyclotron resonance master of TE's mode,which was applied particle-in-cell method and a electromagnetic mode based on theoretical analysis.

采用等离子体粒子模拟的方法，在理论研究基础上应用电磁模型，编写了TE模式的电子回旋脉塞等离子体粒子模拟程序并进行了数值模拟。

Objective To study resonance light scattering spectra of diazotization- coupling reaction and establish a new method for the determination of trace nitrite.

目的 研究重氮化－偶联反应的共振散射光谱并应用于亚硝酸根的测定。

World War II: Battle of Saipan - Americans take Saipan.

1944年的今天，美国在塞班战役中拿下塞班岛。

When the scorner, the rejecter of truth, has become presumptuous; when the routine of work in the various money-making lines is carried on without regard to principle; when the student is eagerly seeking knowledge of everything but his Bible, Christ comes as a thief.{DA 635.3

当讥诮和拒绝真理的人，到了任意妄为时，当追求财利者罔顾按道义经营谋利时，当学人正在兢兢业业地研究各种知识，而单把圣经丢在一边时，基督要像贼一样来临。