基于微电极的交流电热效应粒子驱动理论与仿真分析

交流电热效应对实现微流体的驱动和微流体中粒子的操控具有便捷高效等优势。采用对称、非对称平面电极、对称双面电极及螺旋叉指电极，利用有限元方法对其电场、温度场、流场和粒子浓度场进行了强耦合仿真计算，并分析了所施加电压和电导率对局部流速及温度梯度的影响。进而，比较了不同几何类型叉指电极在相同激励下对微流体的驱动能力。结果表明，在只改变电压或电导率的情况下，电压与局部流速及温度梯度的平方成正比，电导率与局部流速及温度梯度呈线性关系；在相同激励下，四种叉指电极的局部流速和温度梯度大小依次为非对称电极、对称电极、双面电极和螺旋电极。实现了对多种典型几何形式微电极的交流电热效应仿真分析，可为优化利用该效应及相关的生物传感器设计提供参考。     

Thermodynamic properties and mixing thermodynamic parameters of Ba-Al, Mg-Al, Sr-Al and Cu-Al metallic melts

Application of equations of mixing thermodynamic parameters formulated on the basis of the coexistence theory of metallic melts in Ba-Al, Mg-Al, Sr-Al and Cu-Al melts leads to fruitful results that not only the evaluated mass action concentrations agree well with the measured activities, but also the calculated mixing thermodynamic parameters are quite coincident with the experimental values. Moreover, the calculated mass action concentrations strictly obey the mass action law. The evaluated mixing thermodynamic parameters have very fine regularity: the mixing free energy is composed of standard free formation energies of all compounds and chemical potentials of all structural units at equilibrium; the mixing enthalpy consists of standard formation enthalpies of all compounds; the mixing entropy is composed of standard entropies of all compounds and configuration entropies of all structural units at equilibrium. As the equations of mixing thermodynamic parameters formulated are widely applicable to metallic melts involving compound formation, they can be used as the second practical criterion to determine whether thermodynamic models of metallic melts are correctly formulated.     

中国电信云计算业务平台安全建设探讨

基于中国电信业务平台的特点,研究在迁移到云计算环境之后的新增安全问题,提出云计算业务平台安全防护框架,阐述云计算业务平台的安全防护体系建设方案.     

利用大气-海洋系统辐射传输模拟水色遥感信息量的变化特性

本文在大气辐射传输理论和三分量水色模型的基础上完善了大气一海洋系统辐射传输计算模型，并利用此模型对离水辐射率等基于水色的遥感信息量变化特性进行了数值模拟，得到了较为合理和系统的分析结果。     

CaO－SiO_2－Al_2O_3－MgO渣系的作用浓度模型及其应用

应用炉渣的共存理论建立了ＣａＯ－ＳｉＯ２－Ａｌ２Ｏ３－ＭｇＯ四元系的作用浓度模型，将大冶钢厂和上钢五厂以及日本山阳钢厂、的轴承钢精炼渣系代入模型进行计算。选取了对钢水的纯净度有直接影响的结构单元的作用浓度对三者的脱氧、脱硫能力以及钢中点状夹杂物形成趋势进行了分析。计算结果说明，大冶的精炼渣系点状夹杂物形成趋势小，而山阳的精炼渣系具有较强的脱硫和脱氧能力。分析结果与检验结果一致。     

RH循环真空除气法的新技术

简介ＲＨ循环真空除气（ＲＨ）的工艺特点及在设备上的改进措施，对其喷粉，脱碳，脱氧，脱氮的多种工艺和冶金效果进行了评述，采用ＲＨ的新技术可以生产极低碳和超纯净钢。     

单嘴精炼炉流场及环流速度的水模型研究

经用水模型实验证明，单嘴精炼炉内钢水循环流动良好．上升和下降流股之间的相互干扰不大。增大气体流量和单嘴内径可显著增大环流量，但单嘴内径对环流速度影响不大。单嘴出口处钢水下降速度约为0.4～0.5m／s，对35t的单嘴精炼炉而言，其钢水环流量约为47～53t／min。     

龙门山推覆构造带北段油气田形成条件探讨

通过对龙门山北段L55地震测线的重新解释,结合区域地质研究和油气地球化学分析数据,认为龙门山北段推覆构造有三大特点。一是薄层推覆构造体系使构造分为上下两层,上层复杂,下层相对简单,上层活动,下层相对稳定;上层有一定变质,下层不变质;上层破坏,下层保存好。二是上元古界震旦系陡山沱组黑色页岩是本区最古老的生油层,具有强大的生烃能力。三是油气经多次由西向东运移,古老的生油层生成的油气可以在不同时间形成的不同类型的圈闭中聚集成藏并接受改造或破坏,从而形成地表丰富的油气苗、沥青脉和油砂岩,推覆体下盘则可以形成油气藏。因而建议在勘探中抓住下盘,点面结合进行地震工作,同时建议重点勘探枫顺场潜伏构造和天井山—矿山梁构造东南翼的潜伏断裂构造。     

Application of annexation principle of thermodynamic property of In-Pb-Sb and In-Bi-Pb melts

Based on the principle of annexation and phase diagrams, the structural units of In-Pb-Sb and In-Bi-Pb melts were determined, and their calculating models of mass action concentrations were formulated. Calculated results agree well with practical values, which in turn show that the models deduced can reflect the structural realities of corresponding melts and the principle of annexation is applicable not only to some binary metallic melts, but also to ternary metallic melts.