简介:MIMO与OFDM技术相结合将成为4G宽带移动通信的核心技术。文章介绍了MIMO—OFDM技术及其特点,研究了空时频联合编码(STF)技术,探讨了STF编码的设计过程,并对其性能进行了分析比较。
简介:构建小鼠脂联素受体2(mAdipoR2)基因cDNA克隆,并进行序列及基因结构分析,为进一步研究小鼠AdipoR2的表达和生物学活性奠定基础.用RT-PCR方法扩增mAdipoR2基因cDNA,获得的片段连接至pGEM-T载体,转化JM109大肠杆菌,经酶切鉴定后,进行序列测定.利用因特网生物信息学资源分析mAdipoR2基因序列.结果成功地构建了mAdipoR2基因cDNA克隆,其序列与GenBank登录序列一致.通过与小鼠基因组序列比对,分析了mAdipoR2基因结构,其编码序列由7个外显子组成,编码1个含7个跨膜区的膜蛋白,但该受体不属于G蛋白偶联受体家族(GPCRs).mAdipoR2与人及大鼠蛋白的同源性分别为91%和95%.
简介:A3Dcontact-frictionmodelforpoundingatbridgesduringearthquakes;ANovelConceptforFaultCurrentTolerableContactors;Astudyofsurfacechangeforelectromagneticcontactor;Anexperimentalstudyabouteffectoffarinfraredradiantceramicsonefficientmethanefermentation;DynamicanalysisandsimulationofelectromagneticcontactorswithACsolenoids;DynamicsimulationofmagneticcontactorswithACsolcnoids;
简介:AnoveladaptivePIDbuffercontrolmodelforbetterserviceroundtriptimeforapplicationsovertheInteTnet;ANovelCompositeSchedulingAlgorithmforOBSSwitchwithSharedOpticalBuffer;AnovelratepredictorbasedonquantizedDCTindicesanditsratecontrolmechanism;ANovelTrafficDispatchAlgorithmfortheParallelPacketSwitch;ANovelVoltageClampedSnubberCircuitTopologySuitableforMultilevelInverterwithItsLoweredPowerLossPerformances……
简介:""""Sensorless""""Controlof4-Quadrant-RectifiersforVoltageSourceInverters(VSI);1kV4H-SiCJBSRectifiersFabricatedUsinganAIMCappedAnneal;1MHzSelf-DrivenZVSFull-BridgeConverterfor48VPowerPods;3-levelthreephasesoft-switchingPWMrectifierwithsingleauxiliaryresonantcommutatedsnubbercircuit;3-phaseconvertermodelingforunbalancedradialsystems;A100kWHigh-PerformancePWMRectifierWithaZCTSoft-SwitchingTechnique;