简介:摘要本文主要介绍了西门子SPPA-T3000系统,并对该系统的网络构架和组成进行了分析,针对#5燃机控制系统通讯故障进行分析,提出解决措施。
简介:Sinomagneticstechnologyisahigh-techenterprisespecializinginR&Dandproductionofrareearthpermanentmagnetmaterials.Itisreportedthattheenterprisehasacceleratedtheconstructionofannual3000tonsofhighperformancesinteredNdFeBproductionbase,andtheconstructionofthebasehasbeencompletedandputintouse.
简介:X-rayimagingistheconventionalmethodfordiagnosingtheorthopedicconditionofapatient.ComputerizedTomography(CT)scanningisanotherdiagnosticmethodthatprovidespatient’s3Danatomicalinformation.However,bothmethodshavelimitationswhendiagnosingthewholeleg;X-rayimagingdoesnotprovide3Dinformation,andnormalCTscanningcannotbeperformedwithastandingposture.Obtaining3Ddataregardingthewholeleginastandingpostureisclinicallyimportantbecauseitenables3Danalysisintheweightbearingcondition.Basedontheseclinicalneeds,ahardware-basedbi-planeX-rayimagingsystemhasbeendeveloped;itusestwoorthogonalX-rayimages.However,suchmethodshavenotbeenmadeavailableingeneralclinicsbecauseofthehightcost.Therefore,weproposedawidelyadaptivemethodfor2DX-rayimageand3DCTscandata.Bythismethod,itispossibletothreedimensionallyanalyzethewholeleginstandingposture.TheoptimalpositionthatgeneratesthemostsimilarimageisthecapturedX-rayimage.Thealgorithmverifiesthesimilarityusingtheperformanceoftheproposedmethodbysimulation-basedexperiments.Then,weanalyzedtheinternal-externalrotationangleofthefemurusingrealpatientdata.Approximately10.55degreesofinternalrotationswerefoundrelativetothedefinedanterior-posteriordirection.Inthispaper,wepresentausefulregistrationmethodusingtheconventionalX-rayimageand3DCTscandatatoanalyzethewholelegintheweight-bearingcondition.
简介:针对钻井平台波浪补偿控制系统,运用意大利ATOS公司的高性能三位四通电液比例换向阀和天车主动油缸来构造钻柱升沉补偿装置的传递函数,提出一种参数自适应模糊PID集成控制策略.MATLAB/Simulink仿真结果表明,该控制系统性能稳定,可以补偿平台94.3%的升沉运动,补偿精度较高,为搭建3000m深海钻井平台波浪补偿装置可行性提供了可靠的理论依据.
简介:摘要目的探讨MRI常规序列T2WI、T2WIFS、DWI及增强T1WIFS在肛瘘诊断中的价值对比。方法64例经手术病理证实为肛瘘的患者,比较分析横断位T2WI、T2WIFS、DWI及增强T1WIFS序列上肛瘘的显示价值。结果对于主瘘管的检出,四个序列手术病理符合率分别为T2WI89.06%、T2WIFS84.38%、DWI68.75%以及增强T1WIFS95.31%。结论肛瘘常规的四种MRI序列,增强T1WIFS序列诊断价值最大,DWI序列诊断价值最低。T2WI序列具有高的诊断价值,特别是对于主瘘管的显示,但对于炎性水肿的显示,还需要借助T2WIFS或增强T1WIFS序列。
简介:目的研究青钱柳叶水提物(Cyclocaryapaliurusaqueousextract,CPAE)对2型糖尿病(type2diabetes,T2D)胰岛素抵抗大鼠肝脏氧化应激、炎症反应及FAS/IRS1的影响。方法将高脂饲料喂养8周结合链脲佐菌素(streptozotocin,STZ)30mg/kg诱导的成模大鼠(空腹血糖〉11.1mmol/L),随机分为模型组,二甲双胍组(0.3g/kg),CPAE低、中、高剂量组(0.25、0.5、1g/kg)。连续灌胃4周,给药期间尾静脉取血测大鼠空腹血糖(fast