含酚化工废水处理方法的探讨

探讨了含酚废水的处理方法,重点介绍了处理含低质量浓度（５０～５００ｍｇ／Ｌ）酚的废水的ＰＳＢ活性污泥法,处理含中等质量浓度（１０００ｍｇ／Ｌ左右）酚在废水的生物接触氧化法、处理含高质量浓度（３００００ｍｇ／Ｌ）酚的废水的萃取法。     

基于PSB/Matlab的动态电压恢复器仿真模型的研究

通过对动态电压恢复器（DVR）的仿真模型分析,介绍了DVR的工作原理和相关的控制策略,并在PSB/Matlab下建立DVR和PWM控制器的模型,对电压跌落情况下的DVR电压补偿过程进行仿真。仿真结果验证了DVR的动态特性和对系统电压跌落的补偿效果。     

On interest-rate risk management of postal savings bureau

This article analyzes interest-rate risks faced by the postal savings bureau (PSB) based on the complete balance sheet It presents the extended gap model and the extended duration gap model to measure the interest-rate risk, and discusses the inner balance-sheet strategies and the off-balance-sheet strategies to manage the interest-rate risks.     

Cu单晶体驻留滑移带的形成与消失

在循环加载条件下，单滑移取向的Cu单晶体首先出现驻留滑移线(PSL)，然后随着循环周次的增加转变为驻留滑移带(PSB)．在不同温度、不同时间条件下对疲劳Cu单晶进行真空退火处理，观察PSB结构在热激活条件下的变化情况．结果表明，退火处理过程中由于空位浓度差异所产生的渗透力促使位错运动，并使PSB的某些部位逐步细化，以至消失．实现了PSB的分段相消．在退火过程中由于应变能的逐步释放，未观察到再结晶现象．     

Local vibration around rare earth ions in alkaline earth fluorosilicate transparent glass and glass ceramics using Eu3+ probe

By heat treating the alkaline earth fluorosilicate glass, transparent glass ceramics containing alkaline earth fluoride nanocrystallites were prepared. The luminescence spectra and phonon sideband associated with the Eu3+:5D2→7F0 in glass and glass ceramics were investi-gated to analyze the local environment around Eu3+. Judd-Ofelt parameters were also calculated from emission spectra, which indicated that the Eu3+ ions entered the precipitated CaF2, SrF2, and BaF2 nanocrystallites. Heat treating could not pledge Eu3+ ions to coordinate with F in the precipitated MgF2 nanocrystallites, owing to the smaller radius of Mg2+ than that of Eu3+.     

Local vibration around rare earth ions in alkaline earth fluorosilicate transparent glass and glass ceramics using Eu probe

By heat treating the alkaline earth fluorosilicate glass, transparent glass ceramics containing alkaline earth fluoride nanocrystallites were prepared. The luminescence spectra and phonon sideband associated with the Eu^3＋：^5D2→^7F0 in glass and glass ceramics were investigated to analyze the local environment around Eu^3＋. Judd-Ofelt parameters were also calculated from emission spectra, which indicated that the Eu^3＋ ions entered the precipitated CaF2, SrF2, and BaF2 nanocrystallites. Heat treating could not pledge Eu^3＋ ions to coordinate with F^- in the precipitated MgF2 nanocrystallites, owing to the smaller radius of Mg^2＋ than that of Eu^3＋.     

基于MATLAB的三相变压器励磁涌流仿真分析

利用MATLAB中的电力系统模块库PSB,建立三相变压器空载模型及短路模型。在此模型基础上对变压器空载合闸和短路故障切除后电压恢复时的励磁涌流进行了仿真,并对此仿真结果进行了分析。仿真结果与理论分析相吻合,表明利用MATLAB/PSB能够有效地实现对变压器励磁涌流的仿真,为变压器保护的算法研究提供基础。     

高强度精轧螺纹钢筋PSB930低成本生产技术开发

针对高强度精轧螺纹钢筋的化学成分可由企业自行选择的特点,在不采取离线热处理的前提下,开发了PSB930精轧螺纹钢筋,大大降低了生产成本,成品屈服强度平均在1000MPa,抗拉强度平均在1190MPa,断后伸长率在7%以上,产品质量完全满足国家标准要求,吨钢效益提高约300元。     

SFA废水以PSB方式生物降解工艺路线之抉择

本文着重研究PSB处理SFA废水的优化工艺条件。经SFA废水成分的测定,探索了该废水“边可溶化边PSB降解”的“双边”处理的可能性,改进了日本小林正泰提出的必须“先可溶化后PSB降解”的“先后”处理的传统理论。在研究废水的预处理工艺以及溶解氧与去除率关系等基础上,揭示了处理系统生物化学代谢变化的规律,并进而探讨了后续工序的处理方法及菌体利用的可能性。试验表明,PSB法在有机废水处理中是有应用前途的新工艺。     

迭代学习控制在励磁控制器设计中的应用

将迭代学习控制理论应用于励磁控制器的设计中,提出了一种新的设计方法,克服了迭代学习控制在有限时间区间上实现完全跟踪的限制.该方法设计的控制器结构简单,可获得较佳的静态和动态特性.采用MATLAB/Simulink软件对单机-无穷大系统进行仿真,结果表明了该方法的有效性和一般性.