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36 个结果
  • 简介:Toprotecttheecologicalbalanceandtheenvironmentforourexistence,ChinahasorganizedtheprojectstoRescueSevenKindsofAnimals,thepanda,ibis,Yangtzecrocodile,Hainandeer,David’sdeer,bignosedantelop,andwildhorsewhichareinimminentdanger.Pandaprotectionproject.From1992totheyear2000,14pandareserveswillbeestablished,covering4,242sqkm,including2,479sqkmforthehabitationofpandas.Theconstructionandmanagementofthe.13existingpandareserveswillbeimproved,covering5,380sqkin.And17newreservecorridorswillbesetupand32stationswillbebuiltin32

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  • 简介:Thispaperdiscussestheharmonicproblemsincontrolsystemsfromtwoaspects:Oneistheharmoniccontrolamongdifferentsubsystems,andtheotheristheharmoniccontrolamongmultipleinputs.Someintrinsicproblemsinsuchsystemsarediscussed.Itispointedoutthatsomesubsystemsmustbeunstabletostabilizethewholeinterconnectedsystembyanexample.Especiallyfordiscrete-timemulti-inputsystems,anecessaryandsufficientconditionispresentedforthestrictdecreaseofthequadraticoptimalperformanceindexwiththecontrolinputextensions.Thisshowsanessentialdifferencebetweensingle-inputandmulti-inputcontrolsystems.Finally,somefutureresearchdirectionsarediscussedinharmoniccontrolofinterconnectedsystems,allocationofmulti-controlinputs,fault-tolerantcontrol,andfault-diagnosis.

  • 标签: 控制系统 多输入系统 谐波控制 波面 充分必要条件 互联系统
  • 简介:Youshouldhavefourdifferentkindsofteeth.Theincisors(frontteeth)cutandchopfood.Wehavefouronthetopandfouronthebottom(底部).

  • 标签: 初中 英语 注释读物 阅读练习
  • 简介:ENERGETICDIAGNOSISFORTWOKINDSOFLOWLEVELJETSWangZhongxing(汪钟兴)(矫梅燕)(1.DepartmentofEarthandSpaceSciences,UniversityofScienceand...

  • 标签: low-level JET HEAVY RAIN ENERGETIC DIAGNOSIS
  • 简介:BackgroundAlthoughmiRNAshavebeenshowntoassociatewithavarietyofdiseases,whethermiRNAsinmonocyteassociateheartfailure(HF)hasbeennotwellstudied.MethodsEightpatientswithischemicHF(IHF),8patientswithnon-ischemicHF(NIHF)and8healthyvolunteerswererecruited.Clinicalcharacteristicsofallparticipantswerecollected.PeripheralbloodsamplesweredrawnforanalysisofmiRNAexpressioninmonocytes.ResultsAllparticipantsweremaleandtheparticipantsinIHFgroupwereolderandhadhigherpercentageofsmokeranddiabetesmellitusthanintheothertwogroups(P<0.05).SerumlevelsofcreatinineandNT-proBNPweresignificantlyhigherinIHFpatientscomparedtotheothertwogroups(P<0.05).MoreparticipantsinIHFgroupweretreatedwithACEI/ARB,beta-blockerandstatins.ParticipantswithNYHAgradeIIIaccountedfor62.5%inIHFgroup,whileparticipantswithNYHAgradeIVaccountedfor87.5%inNIHFgroup.Thelevelsof11miRNAsinmonocytesweresignificantlyhigherintheIHFgroup,andthelevelsof7miRNAsweresignificantlyincreasedintheNIHFgroup.OtherdifferencesinmiRNAslevelsbetweenIHFandNIHFgroupswerealsoobserved.ConclusionourpresentstudyrevealedthattherearesubstantialdifferencesinmiR-NAsbetweenHFpatientsandhealthyvolunteer.

  • 标签: 外周血单核细胞 miRNA 心力衰竭 水肿 协会 类型
  • 简介:我们在场在intracavity冷却并且外部洞为光制冷冷却之间的比较。结果证明intracavity计划在低光密度(0.01)被比较喜欢。我们能在实验为不同案例选择合适的计划。而且在一样的条件下面,拿做Yb3+的ZBLAN(ZrF4-BaF2-LaF3-AlF3-NaF)作为一个例子拍摄,二个计划的冷却过程被获得。计算结果证明冷却的intracavity将为一件薄电影样品完成更大的温度落下。最后,二极管激光可以为简短讨论的intracavity模型成为一个候选人。[从作者抽象]

  • 标签: 激光冷却 增强型 固体 几何 ZBLAN 二极管激光
  • 简介:纸基于准确公平可靠,相对错误函数作为损失功能在被拿开发最佳的Bonus-Malus系统(BMS)的一个图案。在BMS,频率和严厉部件被考虑。这个图案与从古典方形错误的损失功能导出的传统的BMS相比。

  • 标签: Bonus-Malus系统 BMS 差积可靠性 公平可靠性 误差函数
  • 简介:Thisstudywasconductedtoevaluatethecriticalthermalmaximum(CTMax),theroutinemetabolismrate(MO2)andthelimitingoxygensaturation(LOS)ofthreesalmonidswithfourdifferentbodyweightsrangingfrom16gto131g.TheCTMaxwasestimatedatthreedifferentheatingratesincluding0.5℃min^-1,1℃h^-1and2℃d^-1.ResultsshowedthattheCTMaxofmapletrout(Oncorhynchusmykiss)wasthehighest,whichwasfollowedbysteelheadtrout(O.mykiss)andAtlanticsalmon(Salmonsalar).TheCTMaxofthesalmonidfishdecreasedwiththeincrementofbodyweight,andwassignificantlyinfluencedbytheheatingrate.TheMO2ofthesalmonidfishincreasedwiththeincrementoftemperature,anddecreasedwiththeincrementofbodyweight.Suffocationpointsofthefishdecreasedwithincreasingbodyweightandtemperature.SteelheadtroutwasmoretoleranttohypoxiathanmapletroutandAtlanticsalmon,whiletheMO2ofAtlanticsalmonwasthehighestamongthesethreesalmonids.TheLOSofthefishgenerallyhadapositivetrendwithtemperatureandbodyweight,andtheLOSofsteelheadtroutwassignificantlylowerthanthatofmapletroutandAtlanticsalmon.Inconclusion,mapletroutwasthemosttolerantkindtohightemperature,whilesteelheadtroutwasthemosttoleranttohypoxiaamongthreekindsofsalmonids.Moreover,theabilitiestotoleratehighertemperatureofthreesalmonidswereaffectedbytheirbodyweightandtheheatingrate,whiletheabilitiestotoleratehypoxiawereinfluencedbytheirbodyweightandthewatertemperature.

  • 标签: critical thermal maximum LIMITING oxygen SATURATION
  • 简介:Interannualvariabilityoflandfallingtropicalcyclones(TCs)inChinaduring1960-2010isinvestigated.Byusingthemethodofpartialleastsquaresregression(PLS-regression),canonicalENSOandENSOModokiareidentifiedtobethefactorsthatcontributetotheinterannualvariabilityoflandfallingTCs.ElNioModokiyearsareassociatedwithagreater-than-averagefrequencyoflandfallingTCsinChina,butreversedincanonicalElNioyears.SignificantdifferenceingenesislocationsoflandfallingTCsinChinaforthetwokindsofElNiophasesoccursdominantlyinthenortherntropicalwesternNorthPacific(WNP).Thepatternsoflow-levelcirculationanomaliesandoutgoinglongwaveradiation(OLR)anomaliesassociatedwithlandfallingTCgenesiswithdifferenttypesofElNiophasesareexamined.DuringcanonicalElNioyears,abroadzonalbandofpositiveOLRanomaliesdominatesthetropicalWNP,whilethecirculationanomaliesexhibitameridionallysymmetricaldipolepatternwithananticyclonicanomalyinthesubtropicsandacyclonicanomalynearthetropics.InElNioModokiyears,avastregionofnegativeOLRanomalies,roughlytothesouthof25°Nwithastronglarge-scalecyclonicanomalyoverthetropicalWNP,providesamorefavorableconditionforlandfallingTCgenesiscomparedtoitscounterpartduringcanonicalElNioyears.FormorelandfallingTCsformedinthenortherntropicalWNPinElNioModokiyears,therearemoreTCsmakinglandfallonthenortherncoastofChinainElNioModokiyearsthanincanonicalElNioyears.ThenumberoflandfallingTCsisslightlyabovenormalincanonicalLaNiayears.EnhancedconvectionisfoundintheSouthChinaSea(SCS)andthewestofthetropicalWNP,whichresultsinlandfallingTCsformingmorewestwardincanonicalLaNiayears.DuringLaNiaModokiyears,thelandfallingTCfrequencyarebelownormal,owingtoanunfavorableconditionforTCgenesispersistinginabroadzonalbandfrom5°Nto25°N.SincethewesternNorthPacificsubtropicalhi

  • 标签: landfalling tropical CYCLONE INTERANNUAL variability CANONICAL
  • 简介:TheanalysisandevaluationofanactualportsystemcontainingRdifferentship’skindsandNsubsystemseachofwhichconsistsofM.(i=1,2,…,N)portsarederived.TheexternalarrivalsofshipstothesystemcomefromRdifferentPoissonsourcesandtheinterarrivalstothequeueofeachportofasubsystemaredeterminedaccordingtoconditionprobabilities.EachporthasmultipleberthswhoseservicetimesaredistributedaccordingtoErlangprobabilitydistributionfunctions.EachportofasubsystemhasRinfinitecapacitybuffersforstoringshipsinterarrived.Thismethodprovidesagoodapproximationprocedureforobtainingsystemperfor-mancemeasuressuchaswaitingtimesofships,averagequeuelengths,etc.Optimumportcapacitycanthusbeevaluatedbyusingthisanalysis.Asimulationisalsopresentedtotestthisapproximateanalysis,andagoodagreementisobserved.Thismodelshallbeusedintheplanningofseveralactualportsystems.Throughtheapplicationofthismodel,itispossibletoanalyzeandevaluateperformancesofthesystems.

  • 标签: PORT system QUEUEING NETWORK simulation and
  • 简介:Thestate-ownedQunfengMachineryWorksisaspecializedfactoryundertheMinistryofAviationandSpaceIndustrymanufacturinglinemantools.Takingfulladvantagesofthesuperiorityoftechnicalforcesandfacilitiesexistedinthisindustry,overonehunderdkindsoflinemantoolsincludinghot-linetoolsmadeofhighstrengthaluminumalloyforhighvoltagetransmissionlinesupto500kVhavebeenmanufacturedsince1979.Someofthefoolswillbeintroducedinsuccessiveisuesinthis

  • 标签: manufactured SUPERIORITY specialized hundred OWNED AVIATION
  • 简介:HepatitisBvaccine,asthefirsthigh-effectiverecombinantcommercialvaccine,wassuccessfullydevelopedintheearly1980s.Sincethen,differentopinionshaveoccurredonthequalityofvaccineswithrapiddevelopmentoftargetgeneselecting,antigenexpressionsystem,andqualityevaluation.DifferentantigensofhepatitisBvaccinesarederivedfromdifferentexpressionsystem,andtherearealsosomedifferencesonmanufactureprocedureorglycosylateddegreeofantigen.

  • 标签: 基因工程 乙型肝炎 疫苗 免疫原性 免疫效果 HBV
  • 简介:1IntroductionSomeorganiccompoundscantransferenergyabsorbedinUVregiontorareearthionswhiletheycoordinatedwiththeionsandthentherareearthionsemitcharacteristicfluoresence.Theluminousintensityandlifetimeofthecoordinatedrareearthionsismuchmorethanthoseofthefreeions.Soscientiststakeaninterestinthesecomplexes[1,2].Inthispaper,inordertoseeknewluminousmaterialexitedwithlowerenergy,EightcomplexesofEu3+withpyridine2,6dicarboxylicacid(H2DPC)、1,10phenanthroline(phen)andmethylbenzoicacid(MBA),including...

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