Seismic Behavior of Asymmetric Building under Pushover Analysis

Pushover analysis is a tool to study the inelastic behavior of structures under strong seismic action. The 3D-pushover analysis was performed to analyze the inelastic lateral-torsional coupled response of multistory asymmetric structures. The symmetric frame and frame-wall systems were studied in this paper, and the capability curve of the top displacement and base shear,the story drift and the position of rotation center were compared with reference to corresponding symmetric structures. The characters of inelastic response of multistory asymmetric structures were found. The conclusion provides reference for performance-based seismic design of asymmetric structures.     

Management System of the Tender and Bidding for Power Projects with a Valuation Based on the Bill of Quantities

Valuation based on the bill of quantifies will change the existing valuation mode of tender and bidding. For the standardized management of tender and bidding for power projects and the inteUigentized information management of power enterprises, it is an inevitable trend of reform to apply the valuation mode based on the bill of quantifies. According to the characteristics of power projects, this paper expounds the working process of the valuation mode based on the bill of quantities and analyzes the goal and function need of the tender and bidding management system. Considering the calculation procedure of the valuation and the quote strategy of quantities bill, the composition of fees for the valuation is settled and the calculation method is designed. To establish the management system of tender and bidding with a valuation based on the bill of quantities is beneficial for the costing reform of power projects and the perfection of the tender and bidding market. Therefore it is of great significance to spread the new management mode of project costing with a valuation based on the bill of quantities.     

Voltage Fluctuation and Flicker Mitigation Using STATCOM

Voltage fluctuation and flicker is one of the main causation that imperils reliability of power supply. Steelmaking EAF with large load of distribution network produces large impact and interference on the public electric network in operation. So it is very important to control reactive power for voltage fluctuation and flicker mitigation. STATCOM possessing high response speed is an effective measure to mitigate voltage fluctuation and flicker of distribution network. Here, comparing to static var compensation, many advantages of STATCOM are analyzed. Operation principles COM mitigating voltage fluctuation and flicker, general control strategies and control method are introduced cussed. The researching pivot and trend in the future are also discussed. of STAT- and discussed. The researching pivot and trend in the future are also discussed.     

Analysis and Control on Roof Stability of Rock-salt Cavity

Analysis and control on roof stability of rock-salt cavity are very important to ensure safety and benefit in production, build and use of repertorv of rock salt cavity. Dynamic balance process and instability process of rock-salt carity roof are studied, and instability mechanism of rock-salt cavity roof is studied with catastrophe theory, and the influencing factor are analyzed, which will be theoretical basis of rock-salt cavity stability control.     

Detecting System of the Dielectric Loss in Capacitive Equipment Based on Virtual Instruments

A digital detecting system of the dielectric loss in the capacitive equipment is introduced based on virtual instruments.This system can real-time collect,analyze,process and storage electrical signals with National Instruments' program LabVIEW and ADLINK,s DAQ board.Through the simulation test in lab and the real test in electric substation,it is shown that this system has high accuracy on testing the dielectric loss in the capacitive equipment,the real test data is stable and the relative error of real dielectric loss is less than 5%.It is to say that this system can meet the requirement of the real on-line monitoring.     

结构参数对水润滑橡胶合金轴承摩擦噪声的影响分析

为了研究水润滑橡胶合金轴承结构参数对其低速重载工况下摩擦噪声的影响,使用复模态分析方法建立了水润滑橡胶合金轴承系统仿真模型,采用专业仿真软件分析了不同摩擦系数及结构参数条件下摩擦噪声产生的概率,进而研究结构参数对摩擦噪声的影响,进行了平板型和圆弧型结构的水润滑橡胶合金轴承摩擦噪声的对比实验。研究结果表明,水润滑橡胶合金轴承的水槽半径大小、摩擦面形状以及摩擦副的摩擦系数对水润滑橡胶合金轴承的摩擦噪声有较大影响,而水槽的形状对轴承摩擦噪声的影响不大。对一定结构尺寸的水润滑橡胶合金轴承,水槽半径为4 mm、平面型摩擦面的结构可以大大减少轴承出现摩擦噪声的可能性,相关实验结果与计算结果是吻合的。     

神舟3号飞船搭载的树莓试管苗超微结构及其RAPD分析

已有研究表明,植物进入太空后,其生长、发育、细胞组织结构以及基因组均发生不同程度的变化.例如,大豆[1]及三叶草[2]受空间微重力的影响使其生长明显加快,许多植物的形态及细胞学行为也受太空环境影响[3～10];另外,空间微重力可以改变植物基因表达水平[11～14],半胱氨酸等放射性保护剂的应用进一步证实太空射线可损伤植物染色体[15].但目前有关太空习行对植物试管苗亚细胞超微结构及其基因组影响的报道较少.本文对神舟3号飞船搭载并成功回收的树莓试管苗进行了细胞亚显微结构及RAPD分子标记的初步分析.     

几种化学试剂浸种对隔年茄子种子发芽力的影响

本试验着重从发芽率、发芽势两方面入手，用不同浓度的CaCl2，Na2B4O7，（NIL）6Mo7O24，KNO3，H2O2，vc，NAA，H2NCSNH2溶液对隔年茄子种子进行浸种处理，结果表明：Cacl2，Na2B4O7，（NIL）6MOT024可以不同程度的提高茄子种子的发芽率和发芽势，浓度为16．0g／L的cach的效果最好；Na2B4O7，〈NH4）6Mo7O024的处理效果低于CaCl2且规律不明显；KNO3，H202对茄子种子的萌发没有促进作用，NAA能使幼苗的下胚轴膨大，Vc，H2NCSNH2强烈的抑制茄子种子的发芽力。     

黔西县农村水电发展存在的问题和对策

建国以来,黔西县小水电建设在省、地主管部门的关心支持和当地党委、政府的正确领导下,经过多年努力取得了一定成绩。但近年来由于种种原因,小水电建设未能继续向前发展,致使全县水能开发利用率极为低下。当前,农村小水电正面临着前所未有的大好发展机遇,分析全县农村小水电建设管理工作中存在的问题及其原因,研究相应的对策,对农村小水电的发展具有重要意义。