简介:LetZbeatopologicalspaceandmappingA2:Z→B(H)withclosedrangeR(A2)becontinuous.SomenecessaryandsufficientconditionsofthecontinuityofM-PinversesAz+aregivenin[1],[2].ItisoneofthemthatAZ+iscontinuousifanaonlyifAZ+islocallybounded.Inthispaper,wediscussthefollowingproblem:iflimAn=A0inB(H)and||An+||isunbounded(i.e.theabovenecessaryandsufficientconditionfails),whathinHwillmaketheequations:limAm+h=A0+horw-limAn+h=A0+hbetrue.Forthispurposethreetheoremsandanerrorestimationaregiveninthispaper.
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:摘要:目的:研讨基于H2H营养管理模式的延续护理对I型糖尿病患儿血糖及酮症酸中毒发生率的影响。方法:选择来2020年1月-2022年1月我院就医的I型糖尿病患儿作为本次医学研究对象,从中随机选择42例患儿,并再次随机分配为对照组与观察组,单组21例,观察组实施基于H2H营养管理模式的延续护理,对照组实施常规延续护理,对比两组血糖控制情况及酮症酸中毒发生率。结果:观察组患儿血糖控制水平显著高于对照组,P<0.05;酮症酸中毒发生率对比,观察组显著高于对照组,P<0.05。结论:针对I型糖尿病患儿,实施基于H2H营养管理模式的延续护理,患儿的血糖控制效果较为理想,利于患儿早日恢复健康,平稳控制血糖,减轻患儿生活负担,可以在临床护理中推广应用。
简介:摘要报道1例通过呼吸道标本宏基因组二代测序检测出人类腺病毒7型阳性,且血清腺病毒IgA抗体阳性,同时应用咽拭子PCR法检测甲型H1N1流感病毒核酸阳性,确诊为重症社区获得性肺炎(腺病毒7型合并甲型H1N1病毒)患者的诊治过程,结合文献复习总结该病的临床特点及诊治方法,以提高临床医生对该病的认识,改善患者的预后。
简介:SYNTHESISOF3-ARYL-1(2H,4H)ACRIDONESANDTHEIRDERIVATIVES¥RongYIN;GuangFanHAN;YuTianLI(DepartmentofMedicalLaboratory,JilinMediea...
简介:Thea-Si∶H/SiNx∶HsampleseriesareinvestigatedbymeansofRamanscatteringtechnique(RST).Theresultshowsthatduetothestructuralmismatchbetweena-Si∶Handa-SiNx∶H,severeinduceddistortionsareproducedintheinterfaceoftheheterojunction,andtheseinduceddistortionstendtowardsacertainenergystate.Theorderingoftheinterfacestructuredependsontheperiodicnumberofmultilayerthinfilms.
简介:目的分析甲型H1N1流感重症病例死亡的危险因素,为甲流的防控工作提供参考依据。方法采用病例对照研究设计,选择天津市2009--2010年的17例甲型H1N1死亡病例作为病例组,同时选择同一就诊医院、相同发病月份的重症或危重病例作为对照组与死亡病例进行1:4匹配,对病例一般情况、既往病史及用药治疗情况等因素进行单因素及多因素条件logistic回归分析。结果共调查病例组17人、对照组68人。两组男女比例分别为1.43:1和2.40:1;孕妇所占比例分别为23.53%(4/17)和7.35%(5/68);患慢性基础性疾病比例分别为47.06%(8/17)和50.00%(34/68)。发病至住院的时间间隔中位数(范围)分别为5.0(2.0~7.0)d和3.0(0—5.0)d、患慢性基础性疾病病种数中位数(范围)分别为2(1~3)种和1(0—2)种。经多变量logistic回归分析,妊娠(OR=10.896)、发病至住院的时间间隔(OR=1.686)、患慢性基础性疾病病种数(OR=3.505)是住院患者死亡的危险因素。结论惠流感样症状的人群应及时就诊,同时医院应加强对重症病例的早期识别和治疗,以降低甲型H1N1流感的病死率。