干凝胶法制备空心玻璃微球

在ICF研究中，空心玻璃微球（HGM）因其具有耐压强度高、气体渗透率低、光学透明和相对较低的原子序数等优点，是一种重要的氘氚燃料容器。相对于液滴法，干凝胶法需要较少的传质传热量，并且溶胶一凝胶过程有利于Ca，Al，Zn，Mg等增强组分的均匀掺入，因此，干凝胶法更适于制备大直径厚壁空心玻璃微球。     

小型变压器内油的膨胀效应和空心胶囊的应用

在变压器中，当环境温度高于灌封温度时，绝缘油对容器壁产生很大的压力，易导致密封处渗漏和壳体变形。为解决以上问题，一方面通过实验研究了密封容器内油的压强随温度的变化规律，另一方面用易压缩的空心胶囊的方法补偿油的热胀冷缩，实验研究了其减压效果，并理论分析计算影响胶囊减压效果的因素。由于胶囊是绝缘体，其大小、数量和安放位置可根据实际情况灵活安排。     

无排放加注的主要影响因素分析

无排放加注作为一项节能环保的技术,可以满足环境、能源、空间、安全等多方面的要求,日益受到重视。在整理分析国内外对无排放加注已得出的研究成果和已给出的代表性观点的基础上,着重论述了影响无排放加注的主要因素方面的研究成果。通过分析各主要影响因素及其影响规律和控制方法,可以为无排放加注的成熟运用提供参考。     

高级音响VIOLA的品牌故事

随着Vishay在高压多层陶瓷电容器（MLCC）技术上的一系列突破，Vishsy制造出了一种新的表面贴装MLCC，比以往任何类型的电容器都更适合镇流器应用。这些新的HVArcGuard电容器采用NP0和X7R电介质，电压等级从直流250V到直流1000V。     

XDCAM无带化存储摄像机的技术规格及应用选型

介绍了XDCAM的4个产品系列,介绍了专业光盘和SxS闪存卡2种新型的存储介质,然后介绍了XDSAM摄像机所采用的包括代理数据流在内的若干编码格式.接下来重点就XDCAM摄像机的产品类别、主要技术规格、容器格式和适用领域作了分析和论述.最后对XDCAM系列的下一代产品作了展望.     

静电场中电介质的极化能

本文通过处于理想平板电容器中的一种电介质原子的极化模型，在经典物理范围内讨论了与电介质中静电场能量有关的问题．特别是关于静电场中电介质的极化能，说明它作为介质中静电场能量的组成部分在微观上的意义．     

Intrinsic Decoherence of Two Atoms System With Kerr Medium

We study the effect of Kerr medium on the intrinsic decoherence of a system which consists of two two-level atoms and a optical cavity. The entanglement of the system is calculated by making use of concurrence. Our results show that the intrinsic decoherence is very sensitive to the nonlinear coupling constant of Kerr medium. Both the oscillation period and the amplitude of the concurrence increase with the increasing nonlinear coupling constant.     

Effective Dielectric Response of Nonlinear Composites of Coated Metal Inclusions

The effective dielectric response of the composites in which nondilute coated metal particles are randomly embedded in a linear host is investigated. Two types of coated particles are considered, one is that the core is nonlinear, the other is that the shell is nonlinear. We derive general expressions for the effective linear dielectric function and the effective third-order nonlinear susceptibility, and take one step forward to perform numerical calculations on the coated metal/dielectric composites. Numerical results show that the effective linear and nonlinear dielectric responses can be greatly enhanced near the surface plasmon resonant frequency. Moreover, the resonant peaks are found within a range from 0.46ωp to 0.57ωp for spherical particles and from 0.59ωp to 0.70ωp for cylindrical inclusions. In the frequency region, the resonant peak can achieve the maximum, according to an optimal structural parameter and volume fraction. The resonant frequency exhibits a redshift with the increasing structural parameter k or volume fraction f or dimensionality factor D.     

Preparation and Dielectric Properties of Nanostructured ZnO Whiskers

By a novel controlled combustion synthesis method, a large number of nanostructured ZnO whiskers with different morphologies, such as tetra-needles, long-leg tetra-needles and multi-needles, are prepared without any additive in open air at high temperature. The morphologies and crystalline structures of the as-prepared ZnO nanostructured whiskers are investigated by SEM and XRD. The possible growth mechanism on the nanostructured ZnO whiskers is proposed. The experimental results indicate that the dielectric constants and losses of the nanostructured ZnO whiskers are very low, demonstrating that the nanostructured ZnO whiskers are low-loss materials for microwave absorption in X-band. However, obvious microwave absorption in nanostructured ZnO whiskers is observed. The quasi-microantenna model may be attributed to the microwave absorption of the ZnO whiskers.     

一种基于STL(标准模板库)的三维数据可视化容器设计

在三维数据的可视化程序设计中,运用基于ANSI/ISO C 模板和面向对象技术,构造出一个能实现三维数据可视化的容器,规整了一些用于数据可视化的常用算法,实现了数据体的随机访问。此外用户接口呈现为一个标准模板库(STL)的接口,从而获得标准模板库的算法和迭代器的能力。因此,该容器是一个可重用、人性化、可扩展、可定制的组件。