简介:AseriesofNi-Hrechargeablebatterieswithatrademarkof‘JJJ’weresuecessfullydevelopedbyJiangnanTribleJcorporation,GuangdongProvince,andwereputintobatchproductionthisyear.ResearchonNi-HbatteryisoneoftheimportantprojectsinChina’sNationalHigh-TechProgramm.ScientistsinTribleJCorp.startedtheresearchlastyear.Afternearlyoneyear’sarduouswork,theycom-pletedthelabworkontheprojectandcametothe
简介:ThemixedH2/H∞guaranteedcostcontrolproblemviastatefeedbackcontrollawsisconsideredinthispaperforlinearsystemswithnorm-boundedparameteruncertainty.Basedonthelinearmatrixinequality(LMI)approach,sufficientconditionsarederivedfortheexistenceofguaranteedcostcontrollerswhihcguaranteenotonlyaprespecifiedH∞disturbanceattenuationlevelononecontrolledoutputforalladmissibleparameteruncertainties,butalsotheworst-caseH2performanceindexontheothercontrolledoutputtobenomorethanaspecifiedbound.Furthermore,aconvexoptimizationproblemisformulatedtodesignanoptimalH2/H∞guaranteedcostcontroller.
简介:HandoverinDigitalVideoBroadcastingforHandhelds(DVB-H)aimstoprovidecontinuousmobilebroadcastingserviceswhenauseristravelingthroughcellboundaries.Agoodhandovercontrolcanimprovethepowerefficiencyandgainmuchbetterreceptionquality.ThisletterprovidesanovelapproachforDVB-HhandoverbasedonDVB-H/UniversalMobileTelecommunicationsSystem(UMTS)hybridnetwork,whichmovesthemainhandoverfunctionfromtheterminalstothenetworks,sothatitreducestheoperationcomplexityoftheterminalsandincreasesthepowersaving.WhentheterminalcannotreceivetheDVB-Hsignalinthetransmissionshadowareasorbecauseofsomeotherreasons,theUMTSnetworksmayofferthesameservicetouserstomaketheservicecontinuous.AstheUMTSnetworkshavethetopologyoftheDVB-Hnetworks,bycommunicatingwiththeterminals,theUMTSnetworkscanhelptheterminalstopredictthehandover,andavoidunnecessaryhandover.
简介:AbstractWe conducted environmental surveillance to detect avian influenza viruses circulating at live poultry markets (LPMs) and poultry farms in Guangxi Autonomous Region, China, where near the China-Vietnam border. From November through April 2017-2018 and 2018-2019, we collected environmental samples from 14 LPMs, 4 poultry farms, and 5 households with backyard poultry in two counties of Guangxi and tested for avian influenza A, H5, H7, and H9 by real-time reverse transcription-polymerase chain reaction (rRT-PCR). In addition, we conducted four cross-sectional questionnaire surveys among stall owners on biosecurity practices in LPMs of two study sites. Among 16,713 environmental specimens collected and tested, the median weekly positive rate for avian influenza A was 53.6% (range = 33.5% - 66.0%), including 25.2% for H9, 4.9% for H5, and 21.2% for other avian influenza viruses A subtypes, whereas a total of two H7 positive samples were detected. Among the 189 LPM stalls investigated, most stall owners (73.0%) sold chickens and ducks. Therefore, continued surveillance of the avian influenza virus is necessary for detecting and responding to emerging trends in avian influenza virus epidemiology.
简介:目的:探究TP方案化疗同步放疗治疗宫颈癌疗效。方法:选取2012年1月~2016年5月收治90例宫颈癌患者作为我次研究对象。根据患者入院时间来将其分为对照组和观察组,每组各45例。对照组患者采用单纯放疗进行治疗,观察组患者采用TP方案同步放疗进行治疗。治疗结束后,对比两组患者不良反应发生概率(消化道反应、骨髓抑制)及治疗总有效率。结果:观察组患者治疗总有效率明显高于对照组患者治疗总有效率(观察组95.56%,对照组77.78%),并且前者不良反应发生概率明显低于后者不良反应发生概率(观察组4.44%,对照组20.00%),两组间数据差异具有统计学意义,即P〈0.05。结论:TP方案化疗同步放疗治疗宫颈癌疗效显著,值得临床中推广及应用。
简介:摘要: TP283X井是部署于阿克库勒凸起西南斜坡的一口三开制斜井,完钻井深6947m。φ241.3mm井眼长达5799m裸眼井段存在煤线、碳质泥岩、灰棕色活性泥岩、玄武岩等易造成井壁坍塌地层和英安岩、玄武岩、奥陶系裂缝等易造成井眼漏失地层。通过分析井壁稳定因素,提出解决技术思路,采取相应的技术措施,解决井壁坍塌和井眼漏失问题,为安全优质高效钻井提供保障。
简介:SYNTHESISOF3-ARYL-1(2H,4H)ACRIDONESANDTHEIRDERIVATIVES¥RongYIN;GuangFanHAN;YuTianLI(DepartmentofMedicalLaboratory,JilinMediea...