Electric properties stability of NbO anode for new electrolytic capacitor

1 Introduction Due to the large specific capacity, electrolytic capacitor has become an important part in the applications of electric capacity and has been widely applied in electronic circuit field. Electrolytic capacitors commercialized can be classif…     

警务绩效的模糊综合评价方法研究

警务绩效评估有利于强化警察机构的组织管理,提高警察的工作效能。针对警务绩效的综合评价问题,制定了警务绩效评估原则,建立了多因素、多层次的警务绩效评价指标体系,并基于模糊数学的评判理论,提出对警务绩效进行整体评价的多级模糊综合评价方法,最后通过一个应用实例,验证了该方法的有效性和实用性。     

戴尔怎么了？

关于戴尔我有很多问题，特别是在他们最近遇到困境之后。但一直以来我都没有写过这方面的东西，因为这个话题很棘手。对于戴尔如何从华尔街宠儿变成众人取笑的对象，答案不一而足，电池事件恐怕是其中一个重要因素。     

利用压缩机缸盖振动信号识别缸内压力

介绍载荷识别的基本概念和方法；通过测量一台１１ＺＡ—１５／８型往复式压缩机缸盖的频响函数，以及工作状态下的缸盖振动信号，识别求得缸内气体压力，其结果与压力实测值较好吻合．这一方法的研究成功．为缸内压力的测量开辟了新的途径．为往复压缩机的故障诊断奠定了基础．     

Fe86Zr5Nb6B3非晶合金超高压烧结

借助XRD，DSC，TEM等分析手段，研究了Fe86Zr5Nb6B3快淬带球磨粉末的热稳定性以及高压烧结条件对块体合金的相组成和晶粒尺寸的影响。结果表明：（1）球磨快淬粉末仍为非晶态，其晶化温度约510℃，该晶化过程的表观激活能庐219．5kJ／mol：（2）在5．5GPa，3min烧结条件下，当Pw=1150W后，获得了相对密度为99．1％，单相α-Fe纳米晶（20．6rim）块体合金：（3）在5．5GPa，1150W烧结条件下，当t延长至25min后，α-Fe相纳米晶粒尺寸长大到28.7nm；（4）在5．5GPa，1150W，5min烧结条件下，纳米晶块体合金的饱和磁感应强度Bs=1．26T，矫顽力Hc=4．27kA．m^-1。     

茉莉花茶能祛除口臭

编辑同志： 据说，茉莉花茶具有祛除口臭的作用，请问，这是为什么？     

英特尔和AMD的较量

在做出裁员1万人的决定后，英特尔似乎终于对AMD带给它的冲击有所反应了。自从1995年法院判决AMD可以和英特尔竞争以来，英特尔在与AMD的战争中一直处于防御地位。AMD已经表明它其实是一个比英特尔所想象的要可怕得多的对手，当然它需要克服很多困难。     

Transformation of microstructure after modification of A390 alloy

A hypereutectic aluminum-silicon alloy with content of 17%Si, designed as A390, was modified. The change of microstructure was identified by optical microscopy. The results show that phosphorus can change the morphology and size of the primary silicon and control the length of needle-like eutectic silicon or dendrite. After modified by phosphorus, the primary silicon of star-like and coarse platelet is changed to polygonal with less cute angles and decreasing average size. The eutectic silicon is also changed because it grows from the tip of angles on the primary silicon and is influenced by the morphology and size of primary silicon. The eutectic silicon changes from needle-like or dendrite shape to short bars and dots with less average length.