简介：Inrecentyears,lifecycleassessment(LCA)methodiswidelyusedingreenmanufacturing,energysaving,andemissionreductionofironandsteelproduction.BasedonthecarbonsteelLCAresearchandrelevantstandardsathomeandabroad,theapplicationofLCAinstainlesssteelinBaosteelwasstudied.Throughthestudyofstainlesssteel'sgoalandscope,lifecycleinventory,LCAandinterpretation,knowledgeandexperienceofLCA'sapplicationinstainlesssteelwasobtained.

简介：Attheendof2015,athree-memberdelegationofyoungscholarsfromAlexanderGorchakovPublicDiplomacyFund(AGPDF)visitedBeijingandTianjinfromDecember7to11attheinvitationoftheChineseAssociationforInternationalUnderstanding(CAFIU).

简介：Wepresentaninterferometrysetupandthedetailedfringeanalysismethodforintenseshortpulse(SP)laserexperiments.Theinterferometryschemewasrefinedthroughmultiplecampaignstoinvestigatetheeffectsofpre-plasmasonenergeticelectronsattheJupiterLaserFacilityatLawrenceLivermoreNationalLaboratory.Theinterferometerusedafrequencydoubled(λ=0.527μm)0.5pslongopticalprobebeamtomeasurethepre-plasmadensity,aninvaluableparametertobetterunderstandhowvaryingpre-plasmaconditionsaffectthecharacteristicsoftheenergeticelectrons.Thehardwareofthediagnostic,dataanalysisandexampledataarepresented.ThediagnosticsetupandtheanalysisprocedurecanbeemployedforanyotherSPlaserexperimentsandinterferograms,respectively.

简介：RareearthpriceroseagainassalesheatingupsinceNovember.Sufferedtheoversoldandexperiencedtherecentpositiveandconstantmultiplestimulus,rareearthindustryiswelcomingitsperiodic'turningpoint'.ItisunderstoodthatsomemanufacturersbegantooverhaulinNovemberandtheupstreamproductionwillbereducedcorrespondingly.However,demandsfrommagnetandotherdownstreamindustriesarerelativelystable.Drivenbyrestrictingoutputandnationalreserve,profitabilityofrareearthindustryisexpectedtoimprove.Securities'researchreportsshowthatnationalreserveposedasignificantsupporttorareearthpricesinrecentyears.

简介：Theconceptofentransyhasbeennewlyproposedintermsoftheanalogybetweenheatandelectricalconductionandcouldbeusefulinanalyzingandoptimizingtheheat-workconversionsystems.Thisworkpresentscomparativeanalysesofentransyandexergyforoptimizationsofheat-workconversion.TheworkproductionandheattransferprocessesinCarnotcyclesystemareinvestigatedwiththeformulationsofexergydestruction,entransyloss,workentransy,entransydissipation,andefficienciesforbothcasesofdumpingandnon-dumpingofusedsourcefluid.Theeffectsofsourceandcondensationtemperaturesonthesystemperformancearesystematicallyinvestigatedforoptimalconditionofproducingmaximumworkorworkentransy.

简介：Wehavedevelopedanewradiographysetupwithashort-pulselaser-drivenx-raysource.Usingaradiographyaxisperpendiculartobothlong-andshort-pulselasersallowedoptimizingtheincidentangleoftheshort-pulselaseronthex-raysourcetarget.Thesetuphasbeentestedwithvariousx-raysourcetargetmaterialsanddifferentlaserwavelengths.Signaltonoiseratiosarepresentedaswellasachievedspatialresolutions.ThehighqualityofourtechniqueisillustratedonaplasmaflowradiographobtainedduringalaboratoryastrophysicsexperimentonPOLARs.

简介：这份报纸建议新方法论选择最佳的阀值水平在阀值(壶)上在山峰被过去常为负担极端的短期的分布的预言的方法近海风汽轮机。如此的最佳的阀值水平为山峰价值的出现基于variance-to-mean比率的评价被发现，它描绘泊松假设。概括Pareto分布然后在最佳的阀值水平上被适合到提取山峰，分发参数被最大的间距评价的方法估计。这方法论被使用估计把时刻和在支持monopile的5MW的mudline把时刻弄弯的塔底弄弯的片的负担极端的短期的分布近海风汽轮机作为一个例子。用最佳的阀值水平的POT方法的精确性被显示更好，以分发试穿，比用实验阀值层次的POT方法的。在短期的极端反应价值之中的比较由与最佳的阀值层次并且与实验阀值层次并且由直接使用使用POT方法预言模拟结果进一步证实建议新方法论的有效性。

简介：AIM:Toevaluateshort-termoutcomesfollowingintraoperativebiliarylavageforhepatolithiasis.METHODS:Atotalof932patientswhowereadmittedtotheWestChinaMedicalCenterofSichuanUniversitybetweenJanuary2010andJanuary2014andunderwentbileductexplorationandlithotomywereretrospectivelyincludedinourstudy.Thepatientsweredividedintothelavagegroupandthecontrolgroup.Relatedpre-,intra-,andpostoperativefactorswererecorded,analyzed,andcomparedbetweenthetwogroupsinordertoverifytheeffectsofbiliarylavageontheshort-termoutcomeofpatientswithhepatolithiasis.RESULTS:Amongstthepatientswhowereincluded,678patientswithhepatolithiasiswereincludedinthelavagegroup,andtheother254patientswereenrolledinthecontrolgroup.Dataanalysesrevealedthatpreoperativebaselineandrelatedintraoperativevariableswerenotsignificantlydifferent.However,patientswhounderwentintraoperativebiliarylavagehadprolongedpostoperativehospitalstays(6.67dvs7.82d,P=0.024),higherhospitalizationfees(RMB28437.1vsRMB32264.2,P=0.043),higherpositiveratesofbacterialculturesfromblood(13.3%vs25.8%,P=0.001)andbile(23.6%vs40.7%,P=0.001)samples,andincreasedusageofadvancedantibiotics(26.3%vs38.2%,P=0.001).Inaddition,inthelavagegroup,morepatientshadfever(>37.5℃,81.4%vs91.1%,P=0.001)andhyperthermia(>38.5℃,39.7%vs54.9%,P=0.001),andhigherwhitebloodcellcountswithin7daftertheoperationcomparedtothecontrolgroup.CONCLUSION:Intraoperativebiliarylavagemightincreasetheriskofpostoperativeinfection,whilenotsignificantlyincreasinggallstoneremovalrate.

简介：Atacertainhightemperature,thiscyclewillbedominantandendtherp-processtoheavierregion[2].Itprovidesanuppertemperaturelimitforrp-processalongtheprotondriplinetoproducenuclidesbeyondA=84,includingthelightpnuclidesof92;94Mo,96;94Ru.TheexistenceofZr-Nbcycleisanimportantquestioninrp-process[2].α-separationenergy(Sα)of84Moplaysanimportantroleintheformationofthiscycle.Astrongenhancementof83Nb(p,α)reactionrateisduetoaverylowSαof84Mo[1].

简介：Thispaperstudiestheproblemofthespacestationshort-termmissionplanning,whichaimstoallocatetheexecutingtimeofmissionseffectively,schedulethecorrespondingresourcesreasonablyandarrangethetimeoftheastronautsproperly.Adomainmodelisdevelopedbyusingtheontologytheorytodescribetheconcepts,constraintsandrelationsoftheplanningdomainformally,abstractlyandnormatively.Amethodbasedontimeiterationisadoptedtosolvetheshort-termplanningproblem.Meanwhile,theresolvingstrategiesareproposedtoresolvedifferentkindsofconflictsinducedbytheconstraintsofpower,heat,resource,astronautandrelationship.Theproposedapproachisevaluatedinatestcasewithfifteenmissions,thirteenresourcesandthreeastronauts.Theresultsshowthatthedevelopeddomainontologymodelisreasonable,andthetimeiterationmethodusingtheproposedresolvingstrategiescansuccessfullyobtaintheplansatisfyingallconsideredconstraints.

简介：UsingtheexampleofthePHELIXhigh-energyshortpulselaserwediscussthetechnicalpreconditionstoinvestigateionaccelerationwithsubmicrometerthicktargets.Weshowhowthetemporalcontrastofthissystemwasimprovedtopreventpre-ionizationofsuchtargetsonthenanosecondtimescale.Furthermoretheinfluenceoftypicalfluctuationsoruncertaintiesoftheon-targetintensityonionaccelerationexperimentsisdiscussed.Wereporthowtheseuncertaintieswerereducedbyimprovingtheassessmentandcontroloftheon-shotintensityandbyoptimizingthepositioningofthetargetintothefocalplane.Finallywereportonexperimentalresultsshowingmaximumprotonenergiesinexcessof85MeVforionaccelerationviathetargetnormalsheathaccelerationmechanismusingtargetthicknessesontheorderofonemicrometer.

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简介：在这份报纸，在滑动模式(SM)控制系统啁啾上的采样间隔的影响被考虑。描述的功能(DF)途径被采用在采样SM控制分析啁啾的特征。由DF计算和限制周期存在条件，一个不稳定的限制周期和二个稳定的限制周期在SM控制系统被发现。二个限制周期的频率和振幅能被图形的计算也估计。啁啾的参数的评价精确性被模拟评估。模拟的结果证明系统能收敛到一大并且从不同起始的条件的一个小限制周期。

简介：Nuclearmassisoneofthefundamentalquantityofatomicnucleus.Thetotalbindingenergyofanucleusderivedfromtherelatedmassvaluesreflectsalltheinteractionsamongtheconstitutingnucleons.Massesofshort-livedA=2Z+3nucleiof112SnprojectilefragmentshavebeenmeasuredattheexperimentalcoolerstorageringCSRe,employingtheIsochronousmassspectrometry(IMS).TheexperimentwasconductedattheHeavyIonResearchFacilityinLanzhouatthebeginningof2016.Theprimarybeamof112Sn35+wasaccumulatedinthesynchrotronCSRmandacceleratedto467.91MeV/u.Secondarybeamwereproducedbyimpingingthehighintensity112Sn35+beamontoa10mmberylliumtargetwhichwaslocatedattheentranceoftheradioactivebeamlineRIBLL2.Theprojectilefragmentsof112Snemergedfromthetargetwerethentransmitted,separatedinflightthroughRIBLL2andfinallyinjectedintoCSRe.

简介：Weproposeaproof-of-principleexperimenttotestanewschemetoproduceasingle-cycleradiationpulseinfree-electronlasers(FELs).Here,afewα-BBOcrystalswillbefirstusedtoproduceanequallyspacedlaserpulsetrain.Then,thelaserpulsetrainilluminatesthecathodetoproduceafrequency-chirpedelectronbunchtraininaphotocathoderfgun.Finally,thefrequency-chirpedelectronbunchtrainpassesthroughataperedundulatortoproduceaquasi-single-cycleTHzpulse.Thisexperimentshouldallowcomparisonandconfirmationofpredictivemodelsandscalinglaws,andthepreliminaryexperimentalresultswillalsobediscussed.

简介：Thispaperintroducedthebasictheoryandalgorithmofthesurrogatedatamethod,whichproposedarigorouswaytodetecttherandomandseeminglystochasticcharacteristicsinasystem.TheGaussiandataandtheRosslerdatawereusedtoshowtheavailabilityandeffectivityofthismethod.Accordingtotheanalysisbythismethodbasedontheshort-circuitingcurrentsignalsundertheconditionsofthesamevoltageanddifferentwirefeedspeeds,itisdemonstratedthattheelectricalsignalstimeseriesexhibitapparentlyrandomnesswhentheweldingparametersdonotmatch.However,theelectricalsignalstimeseriesaredeterministicwhenamatchisfound.Thestabilityofshort-circuitingtransferprocesscouldbejudgedexactlybythemethodofsurrogatedata.

简介：

简介：Chemicalloopingdryreforming（CLDR）isaninnovativetechnologyforCO2utilizationusingthechemicalloopingprinciple.TheCLDRprocessconsistsofthreestages,i.e.CH4reduction,CO2reforming,andairoxidation.Spinelnickelferrite（NiFe2O4）waspreparedanditsmulti-cycleperformanceasanoxygencarrierforCLDRwasexperimentallyinvestigated.X-raydiffraction（XRD）andLaserRamanspectroscopyshowedthatapurespinelcrystallinephase（NiFe2O4）wasobtainedbyaparallelflowco-precipitatingmethod.NiFe2O4wasreducedintoFe-Nialloyandwustite（FexO）duringtheCH4reductionprocess.SubsequentoxidationofthereducedoxygencarrierwasperformedwithCO2asanoxidanttoformanintermediatestate:amixtureofspinelNi1-xFe2+xO4,Fe2+yO4andmetallicNi.AndCOwasgeneratedinparallelduringthisstage.Approximate185mLofCOwasgeneratedfor1gspinelNiFe2O4inasinglecycle.TheintermediateoxygencarrierwasfullyoxidizedintheairoxidationstagetoformamixtureofNi1+xFe2-xO4andFe2O3.Althoughtheoriginalstateofoxygencarrier（NiFe2O4）wasnotfullyregeneratedandagglomerationwasobserved,agoodrecyclabilitywasshownin10successiveredoxcycles.更多还原

简介：Tailoreddiodelasersingleemitterswithlong(6mm)resonatorsandwide(1.2mm)emissionaperturesthatoperatewith940nmemissionwavelengthwereassembledinnoveledge-cooledverticallystackedarrays,andusedtoconstructacompactandhighlyefficientfibercoupledpumpsourceforYb:YAGpulsedhigh-energyclasssolid-statelasers.Thenovelconfigurationisshowntoallowrepetitionratesof200Hzat1mspulseduration,atanoutputpowerof130Wpersingleemitter.Theemissionoftwostackedarrayswasthenopticallycombinedtorealizepumpmodulesthatdeliver6kWpeakpower(pulseenergy6J)froma1.9mmcorediameterfiber,withwallplugefficiencyof50%.Thisrepresentsasignificantimprovementintermsofdutycycleandelectro-opticalefficiencyoverconventionalsources.ThepumpmodulehasbeensuccessfullytestedattheMaxBornInstitute,Berlinduringtrialsforpumpingofdisklasers.

简介：Hydrousrutheniumoxide（h-RuO2）nanoparticlesanditscompositewithmultiwalledcarbonnanotubes（h-RuO2/MWCNT）weresynthesizedbyasimplehydrothermalmethodandprovedtohavepotentialapplicationashybridsupercapacitormaterial.Theh-RuO2andh-RuO2/MWCNTwerecharacterizedfortheirphysico-chemicalpropertiesbyPXRD,BETsurfacearea,Raman,SEM-EDSandTEMtechniques.Theelectrochemicalperformanceofthematerialswereinvestigated,specificcapacitance（Cs）ofh-RuO2andhRuO2/MWCNTestimatedbytheircyclicvoltammetricstudieswerefoundtobe604and1585F/grespectivelyatascanrateof2mV/sinthepotentialrange0–1.2V.Further,thisvaluewasfoundtobenearlythreetimeshigherthanthatofpureh-RuO2.Anasymmetricsupercapacitor（AS）devicewasfabricatedbyemployingh-RuO2/MWCNTasthepositiveelectrodeandactivatedcarbonasthenegativeelectrode.ThedeviceexhibitedCsof61.8F/gatascanrateof2mV/s.Further,thedeviceshowedexcellentlongtermstabilityfor20,000cycleswith88%capacitanceretentionatahighcurrentdensityof25A/g.