简介:Towardstheanalysisofthedevelopmentalsituationofwindpowergenerationandelectricvehicles,anovelideaforstabilizingthefluctuationofwindfarms’outputbytheuseofbatteryswappingstationsofelectricvehiclesisputforwardinthispaper,toeffectivelyalleviatetheimpactofgrid-connectedoperationofwindfarmsonthepowersystemwhilepromotingthefieldoperationofchargingandbatteryswappingstations.Abatteryswappingstationistreatedasacapacity-variableenergystoragepowerstation,connectedtotheoutputterminalofawindfarm.AcombinedoperationmodelforwindfarmandbatteryswappingstationisestablishedbasedontheMATLAB/SIMULINKsimulationplatformandthecontrolstrategyisproposedfortheoperationofbatteryswappingstations.Thesimulationresultsshowthattheintroductionofabatteryswappingstationcaneffectivelystabilizethefluctuationofwindfarmoutput.
简介:Thefeasibilityoffenestrationoperationinmiddleearbonewithpulsedinfraredlaserisevaluated.HealthymaleNewZealandrabbitsinvivoareusedintheexperiment.Middleearmastoidboneofanimalmodeliscompletelyexposedwithconventionalmethods,andthenapulsedCO2laser(10.6μm)andanEr:YAGlaser(2.94μm)areusedtoperformthefenestrationoperation.Diamonddrillisalsousedasacontrolgroup.Thetotaloperationtimeandlightirradiationtimearerecordedandtheopeningefficiencyisassessed.Themorphologicalchangesandthermaldamagearoundtheopeningwindowonthemiddleearboneareexamined.Itisshownthatbothlasersystemsaresuitableforthefenestrationoperationinmiddleearbone,andthisno-touchtechniquehasalotofbenefitscomparedwithtraditionalmethods.Thebleedingduringoperationhasanimportanteffectonoperationtimeandthermalinjuryandneedstobecontrolledefficientlyinfurtherstudy.更多还原
简介:LongtanHydropowerStationislocatedinGuangxiZhuangAutonomousRegionontheupperreachoftheHongshuiRiver,whichisthekeyandlandmarkproject
简介:TheThreeGorgesProject(TGP)isaworldknownprojecttoutilizeandmanagethewaterresourcesoftheYangtzeRiver.Thereservoirstoreswaterattheendofthefloodseason,andreplenishesdownstreamreacheswithwaterindryseasons.Inadditiontosuchbenefits,theTGPhasirreversiblychangedthehydrologicalprocessandtheriver-lakerelationofthemiddleandlowerreaches.Inthispaper,ahydrodynamicmodelwasestablishedtoquantifytheimpactoftheTGP'soperationonthewaterexchangebetweenDongtingLakeandtheYangtzeRiverduring2009–2013.Theresultsindicatedthat:theoperationoftheTGPhasconsiderablyreducedthepeakdischargeandthefloodvolumeofthemainstreamandtheDongtingLakearea.TheinflowvolumefromtheYangtzeRivertoDongtingLakeviathreeoutletsdecreasedby1.9–3.5billionm3/yr,whiletheoutflowvolumefromDongtingLaketotheYangtzeRiveratChenglingjiincreasedby0.3–1.6billionm3inSeptemberand0.4–0.6billionm3inOctober,respectively.Thisresearchprovidesvaluableinformationforfloodcontrol,irrigation,andwaterallocationinthemiddleandlowerreachesoftheYangtzeRiver,andservesasatypicalcaseforinvestigatingtheimpactofotherhydropowerprojectsaroundtheworld.&2017InternationalResearchandTrainingCentreonErosionandSedimentation/theWorldAssociationforSedimentationandErosionResearch.PublishedbyElsevierB.V.Allrightsreserved.
简介:Since2010,ShandongWomen’sUniversity,asthethirdundergraduatecollegesforfemaleinChinaandfirstinShandongProvince,incumbentlyundertookthemissionofexploringuniquelawforinnovativeandentrepreneurialeducationoffemalecollegestudents,constructedandimplemented“five-oriented”cultivationmodesforinnovativeandentrepreneurialqualityoffemalecollegestudentsbasedonthetheoriesofQualityEducationTheory,EntrepreneurialEcologyTheory,EducationalEngineeringTheory,GenderDifferencesTheory,andDifferentiatedTeachingTheory.Thefirstis“Generalization-Oriented”CultivationObjective,havingestablishedtheinnovativeandentrepreneurialgoalsforfemalecollegestudentsinsixdimensionsincludingconsciousness,thinking,spirit,knowledge,ability,andpersonality.Thesecondis“Integralization-Oriented”CultivationChannel,havingfoundedandintensifiedthecollaborationandlinkageamongchannelslikefirstclassroom,secondclassroom,andplatformonandoffcampus.Thethirdis“Collaboration-Oriented”CultivationMeasures,havingfoundedandintensifiedthematchingandcoordinationamongsystem,mechanism,teachers,resource,andothermeasures.Thefourthis“Circulation-Oriented”CultivationProcess,arrangingandintensifyingstepslikeinvestigationandresearch,designandplan,actionandsupervision,andconcludingandevaluationorderlyoperating,formingclosed-circuitandadvanceincirculation.Thefifthis“Differentiation-Oriented”CultivationMethods.Thismodehasefficientlysolvedtheproblems,likeunclearpurpose,unknowndirection,incompletedistributionandscatteredforces,insufficientconditionsandinefficientmeasures,poorarrangementandflow,neglectingdifferencesandnotfineenough,existingintheinnovativeandentrepreneurialeducationforfemalecollegestudents,whichmadetheirinnovativeandentrepreneurialqualitiesgreatlypromotedandenthusiasmandefficiencytoparticipateintheinnovativeandentrepreneurialactivitiesenhanced.
简介:APlasmaSurfaceInteraction(PSI)experimentonChinaLowActivationMarten-sitic(CLAM)steelwasdonetocheckifCLAMsteelcouldbeusedasaPlasmaFacingMaterial(PFM).Aspecimenwithadiameterof45mmwasexposedto897shotsofdeuteriumplasmaswithatotaldurationof712secataminorradiusof30cminHT-7tokamak.Duringtheexpo-sureexperiment,noobservableinfluencewasfoundonplasmaperformance.Afterexposure,thesurfaceofthespecimenseemedassmoothasbeforebutwithsomecolourchangeatthemarginofthespecimen.Eventhoughsomemicro-damage,suchasdenseblisters,melting,splashing,depositions,anddust,wasfoundonlocalsurfaceswithScanningElectronMicroscopic(SEM)observation.Thereflectivityofthespecimendecreasedonlyslightly.AlloftheseshowsCLAMsteelhasgoodstabilityandirradiationresistance.Withfurtheroptimization,itcouldpossiblybeusedasthefirstmirrormaterialforplasmadiagnosticsintokamaks.
简介:Unlikeatraditionalfiberlaserwithadefinedresonantcavity,arandomfiberlaser(RFL),whoseoperationisbasedondistributedfeedbackandgainviaRayleighscattering(RS)andstimulatedRamanscatteringinalongpassivefiber,hasfundamentalscientificchallengesinpulsingoperationforitsremarkablecavity-freefeature.Forthetimebeing,stablepulsedRFLutilizingapassivemethodhasnotbeenreported.Here,weproposeandexperimentallyrealizethepassivespatiotemporalgain-modulation-inducedstablepulsingoperationofcounterpumpedRFL.Thankstothegoodtemporalstabilityofanemployedpumpingamplifiedspontaneousemissionsourceandthesuperiorityofthispulsegenerationscheme,astableandregularpulsetraincanbeobtained.Furthermore,thepumphysteresisandbistabilityphenomenawiththegenerationofhigh-orderStokeslightispresented,andthedynamicsofpulsingoperationisdiscussedafterthetheoreticalinvestigationofthecounterpumpedRFL.ThisworkextendsourcomprehensionoftemporalpropertyofRFLandpavesaneffectivenovelavenuefortheexplorationofpulsedRFLwithstructuralsimplicity,lowcost,andstableoutput.
简介:WefallintodisusetheJUHUsystembasedonthePDP/11computerforRSX11Moperationsystem,andupdateourmulti-parameterdataaequisitionandanalysissystem’shardwareandsoftwarebasedonVAXIIcomputerandOpenVMSoperationsystem,makeitadaptedtotherecentphysicsexperiment.Inthispaper,wedescribetheupdatedinulti-parameterdataacquisitionandanalysissystem’shardware,softwareconfigurationandsystemfunction.
简介:OnOctober8,2018,theHualuHengshengChemicalStockCo.,Ltd.(HHCSC)inShandongmadeanannouncementthatallfacilitiesofits0.5Mt/aethyleneglycolunithadbeenoperatingsmoothlyat70%offullload,whilecrankingoutqualityproduct(withthepremiumqualitycomplianceratereaching100%)tosymbolizethattheunitwasenteringatrialproductionstage.
简介:Objective:ToinvestigatewhetherGli1expressionisimportantinrelapseafterradicaloperationofbreastcancer.Methods:Usingimmunohistochemistry,Gli1expressionwasanalyzedinhumanprimarybreastcancer(n=284)andparacanceroustissues(n=20),andalsoinlocallymphnodes(n=28)andmetastaticlymphnodes(n=28).Results:InitialanalysisofGli1expressioninasmallcohortof20breasttumorsandtheirparacanceroustissuesshowedatendencytowardsGli1overexpressioninbreastcancertissues(P<0.001).Further,Gli1expressionin284breastcancertissuesampleswasanalyzedandasignificantcorrelationwasfoundbetweenincreasedexpressionofnuclearGli1andunfavorablerecurrence-freesurvival(RFS)(P<0.05).ThenuclearexpressionofGli1inmetastaticlymphnodesfollowingrelapseafterradicaloperationwasmuchhigherthanthatinthelocallymphnodesofprimarycarcinoma(P<0.05).Mostinterestingly,theexpressionofGli1wasmuchhigherintheinterstitialtissuesoftherelapsedgroupthanofthenon-relapsedgroup(P<0.001).Conclusions:BreastcancershowsahighprevalenceofGli1expression,whichissignificantlycorrelatedwithaggressivefeaturesandunfavorableRFS.NuclearGli1overexpression,especiallyintheinterstitialtissues,signifiedearlyrelapseafterradicaloperationofbreastcancer.
简介:Inthispaperthecomplexstructureandpatternofshipsternflowdrivenbymulti-propellersissimulatednumericallybyusingRANSequationswithK-εturbulencemodelandpropellerliftingsurfacetheoryasessentialresearchtoolandcouplingthecomputercodeofshipsternflowtothecomputercodeofpropellerperformancepredictionthroughthemediumofbodyforce.Ashipmodelwithfourpropellersisselectedasthenumericalexample.Detailedcomputationalresultsarepresentedgraphicallyandthequalitativeandquantitativeanalysisismade.Finally,thecomparisonbetweenthecalculatedresultandtheavailableexperimentaldataismade.Theagreementbetweenthemissatisfactory.
简介:1GeneraldescriptionLuohuangpowerplantislocated25kmnortheastofChongqingcity,Sichuan,jointlyownedbyHuanengInternationalPowerDevelopmentCompany(HIPDC)andChongqingMunicipal-ityGovernment.Two360MWcoalfiredunitscompletewithFGDsystem,startedconstructioninSeptember1988,werefirstsyn-chronizedinJuneandDecember1991,andunderwentfullloadtestsinSeptember1991andMarch1992respectively.SincethentheunitshavebeenplayingavitalroleincontributingtothepowersupplyofSichuanandChongqing.SouthwestElectricPowerDesignInstituteundertookthe
简介:Demandresponse(DR)isgainingmoreandmoreimportanceinthearchitectureofpowersystemsinacontextofflexibleloadsandhighshareofintermittentgeneration.ChangesinelectricitymarketsregulationinseveralcountrieshaverecentlyenabledaneffectiveintegrationofDRmechanismsinpowersystems.Throughitsflexiblecomponents(pumps,tanks),drinkingwatersystemsaresuitablecandidatesforenergy-efficientDRmechanisms.However,thesesystemsareoftenmanagedindependentlyofpowersystemoperationforbotheconomicandoperationalreasons.Indeed,asufficientlevelofeconomicviabilityandwaterdemandsriskmanagementarenecessaryforwaterutilitiestointegratetheirflexibilitiestopowersystemoperation.Inthispaper,weproposedamathematicalmodelforoptimizingpumpschedulesinwatersystemswhiletradingDRblocsinaspotpowermarketduringpeaktimes.Uncertaintiesaboutwaterdemandswereconsideredinthemathematicalmodelallowingtoproposepowerreductionscoveringthepotentialriskofreal-timewaterdemandforecastinginaccuracy.NumericalresultswerediscussedonarealwatersysteminFrance,demonstratingbotheconomicandecologicalbenefits.