加入WTO以后监督检验机构应对策略浅谈

本文主要探讨了在中国加入WTO之后，面对日益严峻的出口形式，我国企业如何提高技术并促进出口。我国企业为什么要进行产品质量认证与质量体系认证？接着论述了国际上有哪些著名的产品质量认证与质量体系认证，并比较了产品质量认证与质量体系认证的异同。为了迎接挑战和机遇，监督检验机构需要采用什么策略，研究了进行这些策略的具体步骤，使能够更好的推进产品质量认证与质量体系认证，促进企业出口。产品质量认证与质量体系认证可以选用两种模式来建立。     

Electronic Structures of the Filled Tetrahedral Semiconductor LiMgN with a Zincblende—Type Structure

An ab initio method with mixed-basis norm-conserving non-local pseudo-potentials has been employed to investigate the electronic structures of LiMgN.The band structure ,electronic density of states and charge density contour plot of LiMgN are also presented.By the calculation,we have found that LiMgN with a zincblende-type structure was an indirect gap semiconductor,and the value of indirect(Γ-X) energy band gap under the local density approximation was 2.97eV.In addition,the strong covalent charcter for Li-N and Mg-N has also been found in LiMgN.     

Direct Current Hopping Conductivity in One—Dimensional Nanometre Systems

A one-dimensional random nanocrystalline chain model is established.A dc electron-phonon-field conductance model of electron tunnelling transfer is set up,and a new dc conductance formula in one-dimensional nanometre systems is derived.By calculationg the dc conductivity,the relationship among the electric field,temperature and conductivity is analysed.and the effect of the crystalline grain size and the distrotion of interfacial atoms on the dc conductance is discussed.The result shows that the nanometre system appears the characteristic of negative differential dependence of resistance and temperature at low temperature.The dc conductivity of nanometre systems varies with the change of electric field and trends to rise as the crystalline grain size increases and to decrease as the distroted degree of interfacial atoms increases.     

Relativistic Multichannel Theory：Theoretical Study of C^＋ Autoionization States

Based on relativistic multichannel theory,the autoionization states of C are studied.We calculate all the autoionization states in the energy region of 193900-231700cm^-1,and the results are in good agreement with the experimental data.The energy structure we obtain will be important in the dielectronic recombination processes,which plays a key role in determining the abundance of carbon in a nebula.     

电子变压器和电感器的国际标准及采用情况分析

简述了电子变压器和电感器的IEC国际标准状况，讨论分析了国家标准、电子行业标准采用IEC国际标准的情况。     

Preintercalation of Layered γ—Zirconium Phosphate for Preparation of Immobilized Hemoglobin

Layered γ-Zirconium phosphate (γ-ZrP) preintercalated with butylamine,tetra(n-butylammonium)hydroxide,dimethylamine respectively,or only ultrasonificated,for preparation of immobilized hemoglobin were in vestigated in this report.     

一种新型的振荡场光学传感器

利用法布里－珀罗振荡模构造了一种新型的光化学传感器。与传统的以表面等离子模和光导模为探针迅衰场传感器不同，这种新型结构中被传感介质处于法布里－珀罗腔的振荡场中，其能量在全部入射光能中的比重占得很大，使得这种传感器具有很高的灵敏度。实验证实这类传感器对葡萄糖溶液浓度和折射率的测量精度皆可达10^-5数量级以上。     

可编程交换平台技术应用研究

１平台技术的研究和开发所谓平台是指一个能够支持多个明确定义的硬件和软件接口的架构。应用开发者可以在该架构的支持下设计和构造许多相关的应用设施,无法预见的障碍及其它要求则通过平台技术解决。如果一种平台技术有充分的前瞻性，并能鼓励开发者从可再利用角度出发,则该平台技术便会在性能、争取时间和产品代价等方面具有极大的潜力。当前,很多公司都通过平台技术以较低的代价为市场提供所需要的灵活性和多变性。实践证明,平台技术能够从现存的和已验证的模块中快速地构造新的、适应当前需要和客户化要求的高质量产品。２可编程承载信…     

一种分布式文件系统中位置独立性的解决策略

分布式系统中位置独立性是不容易实现的，但它却是系统所期望拥有的一个特性。讨论了分布式文件系统中目录服务的实现，给出了一种位置独立性的解决策略。