n-Al2O3/Ni复合镀层的组织与滑动磨损性能研究

用电刷镀技术制得了镍基n-Al2O3复合镀层，并对镀层的滑动磨损性能进行了试验研究。纳米复合镀层的表面形貌比较细腻，镀层中纳米粒子分布均匀，与基质金属结合紧密。镀层显微硬度达到HV700，比快速镍镀层提高约40％。滑动磨损试验结果表明，随着纳米粒子含量的增大，镀层的耐磨性提高，摩擦系数也呈增大趋势；但当镀层中n-Al2O3粒子的超过2.56%(质量分数）时，镀层的耐磨性显著下降。纳米复合镀层的磨损机制以疲劳磨损为主，而快速镍底层以粘着磨损为主。     

ZXJ10机IN业务功能扩展及实现

本文从智能网的基本概念入手,论述了利用 ZXJ10程控交换系统为发展智能网业务提供支持功能的技术策略以及分阶段实现的过程,并对各个阶段能够实现的业务作了简要介绍。     

乙醇电氧化的研究进展

简要地叙述了国内外乙醇电催化氧化的研究进展，着重介绍不同电极材料对乙醇电氧化的影响及目前所提山的机理，并对其可能的研究方向提出了建议。     

提高20t电弧炉炉衬寿命工艺实践

炉渣碱度、泡沫渣高度、吹氧角度、补炉方式等是影响20t电弧炉炉衬寿命的主要因素。为了提高炉衬寿命,莱钢炼钢厂采取了控制炉渣组成、泡沫渣全程埋弧操作、吹氧、喷补炉衬等多项措施,使炉衬寿命稳定在600炉次以上。     

浅析企业人才的"留"与"流"

文章分析了人才在企业管理和促进企业发展中的重要性,提出在人才招聘中应注意的三个方面因素,全方位分析了留住人才与人才流动之间的关系.     

Highly active lanthanum doped nickel anode for solid oxide fuel cells directly fuelled with methane

Lanthanum doped nickel and YSZ composite anode (LaNi–YSZ) exhibited a greatly reduced polarization resistance and high performance for electrochemical oxidation of hydrogen and methane, which resulted from a fine anode structure with a high dispersion of nickel catalyst and a high catalytic activity towards methane.     

Single nucleotide polymorphism data analysis - State-of-the-art review on this emerging field from a signal processing viewpoint

The basic structural units of the genome are nucleotides. A single nucleotide polymorphism (SNP) is a mutation at a single nucleotide position. This paper discusses several major problems in SNP data analysis and review some existing solutions in this work. Generally speaking, a rich set of SNP analysis problems are cast in the signal processing framework. Our objective is to offer a state-of-the art review on this topic from a signal processing viewpoint so that researchers in the signal processing field can grasp the important domain knowledge to overcome the barrier between the two fields     

影响长廊阻抗式调压室配筋的几个因素分析

采用三维非线性有限元方法,对四川天全县干溪坡水电站调压室结构特性进行研究,并对几个影响配筋的因素进行敏感性分析,得出各个因素对配筋结果的影响,为调压室结构设计提供科学依据。     

Subspace-Based Blind Channel Identification for Cyclic Prefix Systems Using Few Received Blocks

In this paper, a novel generalization of subspace-based blind channel identification methods in cyclic prefix (CP) systems is proposed. For the generalization, a new system parameter called repetition index is introduced whose value is unity for previously reported special cases. By choosing a repetition index larger than unity, the number of received blocks needed for blind identification is significantly reduced compared to all previously reported methods. This feature makes the method more realistic especially in wireless environments where the channel state is usually fast-varying. Given the number of received blocks available, the minimum value of repetition index is derived. Theoretical limit allows the proposed method to perform blind identification using only three received blocks in absence of noise. In practice, the number of received blocks needed to yield a satisfactory bit-error-rate (BER) performance is usually on the order of half the block size. Simulation results not only demonstrate the capability of the algorithm to perform blind identification using fewer received blocks, but also show that in some cases system performance can be improved by choosing a repetition index larger than needed. Simulation of the proposed method over time-varying channels clearly demonstrates the improvement over previously reported methods.     

构建气瓶安全监管全方位智能化平台

近年来,国内各省市在民用、商用、工业液化气的使用过程中因气瓶质量安检问题出现众多致命、致伤事故,给广大市民的生命和财产安全造成重大损害.兰洋科技有限公司提供的气瓶安全实时监管信息系统,构建了一套立体化、全方位的气瓶安全集中的监管信息网络.一方面解决了气瓶数量大,流动性强,监管难度大的问题;另一方面也缓解了监管部门人力资源有限,质监各部门协同配合实效性差的问题.