简介：Throughmanyyears'cooperation,SGCCandShanghaiSilicateResearchInstituteofChineseAcademyofSciencesuccessfullydeveloped650ampere-hourscapacitysodium-sulfurmonomericstoragebatterywiththeindependentintellectualpropertyright

简介：Lithiumsulfurbattery(LSB)offersseveraladvantagessuchasveryhighenergydensity,low-cost,andenvironmental-friendliness.However,itsuffersfromseriousdegradationofitsreversiblecapacitybecauseofthedissolutionofreactionintermediates,lithiumpolysulfides,intotheelectrolyte.Tosolvethislimitation,therearemanystudiesusinggraphene-basedmaterialsduetotheirexcellentmechanicalstrengthandhighconductivity.Comparedwithgraphene,grapheneoxide(GO)containsvariousoxygenfunctionalgroups,whichenhancethereactionwithlithiumpolysulfides.Here,weinvestigatedthepositiveeffectofusingGOmixedwithcarbonblackontheperformanceofcathodeinLSB.WehaveobservedasmallerdropofcapacityinGOmixedsulfurcathode.Wefurtherdemonstratethatthemechanisticoriginofreversibilityimprovement,asconfirmedthroughCVandRamanspectra,canbeexplainedbythestabilizationofsulfurinlithiumpolysulfideintermediatesbyoxygenfunctionalgroupsofGOtopreventdissolution.Ourfindingssuggestthattheuseofgrapheneoxide-basedcathodeisapromisingroutetosignificantlyimprovethereversibilityofcurrentLSB.

简介：Intheexistingelectricitymarket,thetraditionalpowersuppliersandrenewableenergygeneratorscoexistinthepowersupplyside.Inthepowersupplyside,renewableenergygeneratorsgeneratepowerbywindandothernaturalconditions,leadingrenewableenergyoutputacertainrandomness.However,thelowmarginalgeneratingcostandthereductionofcarbonemissions,andthusbringsacertainadvantageforrenewableenergycomparedtoalternativeenergy.Electricity,asaspecialcommodity,stableandadequatepowersupplyisanecessaryguaranteeforeconomicandsocialdevelopment.Powershortagesituationisnotallowedinthepowersystem,andtheextrapowerneedstobehandledforthepurposeofsafety.Inthispaper,thehybridpowergeneratedbyrenewableenergygeneratorsandtraditionalenergygeneratorsisusedaspowersupply,andthentheelectricitymarketsellshybridpowertoelectricityconsumers,thehybridpowersystemdeterminestheoptimaldaytimeprice,nighttimeprice,andtheoptimalinstalledcapacityoftherenewableenergysuppliers.Wefindthattheinstalledcapacityofrenewableenergyincreasesfirstandthendecreaseswiththeincreaseofthepricesensitivitycoefficientoftraditionalenergysupply.Electricitydemandisnegativelyrelatedtoelectricitypriceinthecurrentperiod,andispositivelyrelatedtopriceintheotherperiod.Theaveragepriceofdayandnightisonlyrelatedtothetotalpotentialdemandofdayandnightandthetotalgenerationprobabilityofrenewableenergy.Thepricedifferencebetweendaytimeandnighttimeispositivelyrelatedtopotentialelectricitydemand,andnegativelyrelatedtothesensitivitycoefficientofelectricityprice.

简介：Cokeovengasisoneofthemainbyproductsofcokechemi-calsindustry.Onetonofcokeformedcangenerate430m~3ofcokeovengas.Adoptionofappropriatechemicalpro-cessingmethodcanconvertmethanecontainedinthecokeovengasintoCOthatcanbefurtherconvertedintomethanol.ItislearnedthatcurrentlyChinahasconstructedandcom-missionedtenprojectsformanufactureofmethanolfrom

简介：Chinabegantheresearchanddevelopmentofrenewableenergygenerationsince1970s,inparticularintheEighthFive-yearPlanperiod,theStatemadecloserattentiontotheresearchanddevelopmentofrenewableenergy,thereforethetechnicallevel,applicationscaleandeconomic,socialbenefitshaveseengreaterprogress.Thecombinedcapacityofrenewableenergygenerationreached100MWattheendof1994.Anditisplannedacombinedcapacityof1236MWwillbetargetedfortheyear2000.

简介：AdsorptioncapacityofACFFincyanideleachingliquorofgoldoreswasstudiedwithcyanideleachingliquorofgoldores,containingvariouskindsofions.Theadsorbedleachingliquorwasanalyzedbyatomicemissionspectroscopyandcolorimetricmethod.ThecontentsofvariouskindsofionsinACFFweredeterminedwithX-rayphotoctronspectroscopy.ACFFnotonlyadsorbedgoldbutalsoadsorbedarsenic,nickel,zinc,calcium,sulphur,bismuth,copper,iron.silverandcyanideanion.AtomicpercentageofCandthoseofO,N,Zr,Feincreaseanddecreaserespectivelywiththeincreaseofthelayerdepth,whilethoseofCa,Au,Agkeepconstant.

简介：Inordertoinvestigatethecalculationmethodsoncrackresistancecapacityofconnectioncomposedofcrossshapedsteelencasedultrahighstrengthconcrete(CSSEUHSC)columnsandsteelencasedconcrete(SEC)beamsundercycleloads,sixinteriorconnectionspecimensweretestedinthelaboratory.Adiscussiononthecrackresistancecapacitywaspresented.Calculationmethodsofcrackresistancecapacitywerededucedbasedontheexperimentalcaseandcalculationresultswereingoodagreementwiththeexperimentalresults.TheresearchresultsindicatedthatparametersofconnectioncomposedofCSSEUHSCcolumnsandSECbeamswithbettercrackresistanceperformancemaybereferredforengineeringapplication.

简介：为季节的产品，零售商通常发射各种各样的出售努力，象做广告和提升一样，到在一个卖的季节提拔他们。当从顾客面对大需求时，一个人应该拿能力限制并且采购进考虑。就大多数产品的shorten生命周期而言，在这份报纸，我们收养传统的书报摊贩模特儿与最佳的顺序数量一起调查最佳的出售努力。我们处理风险厌恶问题并且与CVaR描绘卖主风险倾向的影响标准，和我们开发一个有效算法获得最佳的策略。系统的性能上的卖主风险倾向的影响经由数字例子被说明。这份报纸的革新是三方面的。首先，出售努力的最佳的联合策略和顺序数量被调查，发现最佳的策略的一个有效算法被开发。第二，能力限制选择和采购策略为过量产品联合被学习。最后，卖主的风险倾向和它的影响被使用CVaR标准，我们通过获得一些新经理的卓见调查。

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简介：Theecologicalcarryingcapacity,animportantindica-tortoevaluatethesustainabledevelopmentoftheecosystem,meansthepotentialabilityofthenaturalecosystemtocarryso-cioeconomicdevelopmentwhiletheecosystemishealthy.Itislimitedbythecarryingcapacityofnaturalresourcesandenviron-mentandtheelasticityoftheecosystem.Itwillbegreatlysignifi-canttostudytheecologicalcarryingcapacityofHainanProvince,thefirstecologicalprovinceadmittedbytheStateEnvironmentalProtectionAdministrationinChina.Notonlyisthenaturaleco-systemreflected,butalsotheeffectsofhumanactivitiesareem-phasizedbyintegratingtheecosystemhealthanalysisintotheecologicalcarryingcapacityresearch.Theresearchresults,usingtheFactorAnalysistoolsofsoftwareSPSS,indicatethattheeco-logicalcarryingcapacityofHainanProvincefluctuatedobviouslyfrom1996to2005.TheleveloftheecologicalcarryingcapacityofHainanProvincewasrelativelyhighin1996,andreachedintotroughfrom1997to1999.Ithassteadilyascendedtobeabovethemiddlelevelsincethe21stcentury.Theresultsalsoshowthatpolicyfactors,especiallytheimplementationofthe'EcologicalProvince'strategy,wereimportantdrivingforcestoinfluencetheecologicalcarryingcapacity.Withthepopulationrapidlyincreas-ing,thelandandwaterresourcespercapitahavedecreasedquickly.Theamountoftheecologicalcarryingcapacitywaspro-motedremarkablybysocioeconomicdevelopmentespeciallyeconomicgrowthandtechnologyapplications.Allofthesewillprovideusefulsuggestionstoestablishandenactregionaldevel-opmentpolicies,especiallyforprotectingandreconstructingtheecologyandenvironmentofHainanProvince.

简介：Theeffectofcathodichydrogenchargingonthetensileandconstantloadpropertieswasdeterminedforanausteniticstainlesssteelweldmentcomprisinga304Lsteelinthesolutiontreatedconditionasabasemetalanda308Lfillersteelasaweldmetal.Partofthe304Lsolutiontreatedsteelwasseparatelygivenadditionalsensitizationtreatmenttosimulatethemicrostructurethatwoulddevelopintheheataffectedzone.Testswereperformedatroomtemperatureonnotchedroundbarspecimens.Hydrogenchargingresultedinapronouncedembrittlementofthetestedmaterials.Thiswasmanifestedmainlyasaconsiderablelossinthedluctilityoftensilespecimensandadecreaseinthetimetofailureandthresholdstressofconstantloadspecimens.The308Lweldmetalexhibitedthehighest,andthe304Lsolutiontreatedsteelthelowest,resistancetohydrogenembrittlement.Hydrogenembrittlementwasassociatedwiththeformationofstraininducedmartensiteaswellasatransitionfrombrittletoductilefracturemorphologyonwardsthecentreofthespecimens.

简介：Marinestructuresoperatinginnaturaloceanenvironmentaresubjectedtovariousstochasticloads.Fordesignofthemarinestructures,themostimportanttaskistodetermineenvironmentalloadde-signcriterion.Thispaperpresentsamethodtodeterminetheoptimumenvironmentalloaddesigncriteri-onformarinestructures.Thismethodisbasedontheinvestmentandbenefitanalysisanditcanreachthedesignpurposeofdecreasingtotalcostsduringtheservicelifeofthestructuresandincreasingeconomicbenefits.

简介：基于在三个峡水库区域的典型村庄里从会见收集的客观数据，现在的学习设计了与农村转变开发有关的三种生计情形：农业上主导的生计，多重类型的生计和非农业上主导的生计。而且，现在的学习在与主导的生计类型的转变的关系报导庄稼耕作的nonpoint来源污染负担的趋势特征，并且讨论了影响生计类型转变的主要因素。结果显示了下列：(1)当前的农田模式在样品区域作为自我耕作，农田转移和休闲显示出多样化的一个趋势。在场的栽培土地的动态特征比转移外面是更多的转移进的一个特殊特征。种的各种各样的规模在各种各样的家庭之中被代表，根据下列减少的顺序：一半劳动家庭>非劳动家庭>足够的劳动家庭。(2)当时，装载由庄稼耕作生产了的最高的污染发生在一半劳动家庭最低发生在非劳动家庭。与增加劳动，污染负担每统一区域趋于首先与足够的劳动在家庭以内增加然后减少。(3)从对非农业上主导的农业上作为生计的类型转移主导，污染装载由农业工业生产了的总数的最大的减小能到达72.01%。把主导的生计比作农业上，多重类型的生计生产主导的生计减少的19.61%-29.85%，和非农业上的污染负担减小收益由35.20%-72.01%的污染负担收益。然而，全部的氮的减小的率不与全部的磷一样。(4)从主导的生计的转变打到非农业的生计的分配和收入支持的劳动的非农业的特征，当潜在的收入变换跟随一个类似的趋势时。另外，不同家庭类型不显示相同变换率，根据下列减少的顺序：足够的劳动家庭>一半劳动家庭>非劳动家庭。(5)在快速的都市化和新工业系统的大楼期间，农村家庭的生计类型进一步在多山的区域被转变了到离开农场家庭类型；这个过程将导致种和农业产生的污染负担的进一步的减小。因此，在种的�

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简介：一个近似方法为学习在步下面的双walled碳nanotubes(DWNT)的动态弄弯在这篇论文被介绍轴的负担。分析基于连续统力学模型，它考虑在外部、内部的nanotubes之间的货车derWaals相互作用。一个弄弯的条件被导出，从哪个批评弄弯负担和联系弄弯的模式能被决定。作为例子，数字结果在固定边界条件下面为DWNT被得出。当把一个内胎插入到围单人赛的时，由于货车derWaals力量的效果，DWNT的批评弄弯负担被提高，这被显示出。纸显示为动态弄弯的DWNT的批评弄弯负担为静态的弄弯比那高。半径的效果也被检验。另外，一些结果与以前的相比。

简介：BeamresponsesunderanimpactNDTloadarestudiedusingtheFourierandLaplacetransforms.Numericalcomputationisperformedforaparametricstudyofbeamandloadparameters.Itisshownthatunderanimpactload,thetimedurationfordisplacementtovanishistentimeslongerthanthatforvelocityandacceleration.Themaximumresponseisachievedfirstinacceleration,followedbyvelocity,andfinallydisplacement,allofwhichoccurbeforetheimpactloadisremoved.Atthemomentthattheimpactloadisremovedfromthebeam,thereisadiscontinuityinthevelocityandaccelerationresponses,butnotindisplacementresponse.TheeffectofKandphonbeamresponseismuchlesssignificantthanthatofEIandC,whichhavesimilareffectonbeamresponse.AsEIincreases,peakvaluesofdisplacement,velocityandaccelerationresponsedecrease.TheeffectofKonbeamresponseonlybecomesappreciableaftertheimpactloadisremoved.WhilethepeakofdisplacementremainalmostunchangedasKincreases,thedisplacementresponsedecaystozerofasterforlargeKvaluesthanforsmallKvalues.

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简介：在强风负担下面的钢框架结构的进步倒塌用LS-DYNA被调查。多材料Eulerian和Lagrangian联合算法被采用。联合有限元素模型的液体结构被建立它为为模仿空气和TNT爆炸材料模仿钢框架结构和水泥磨擦的、多重淡色啤酒元素由Lagrange元素组成。强风压力波浪繁殖，结构的动态回答和变丑的数字模拟，和万一爆炸的五故事的钢框架结构的进步倒塌接近上面的地面被执行。数字分析证明Lagrangian和Eulerian联合算法在结构上在媒介和强风负担效果给了冲击波繁殖的好模拟。受到强风负担的列可以崩溃由砍让步而非旁边曲折变丑。到在前面钢框架结构的列的钢横梁的柱和关节产生了受到集中的强风波浪的庞大的塑料变丑，并且柱输了带能力，随后导致整个结构的倒塌。联合在结构的变丑和液体负担之间的影响很好的途径模仿了结构的进步倒塌过程，并且为在强风负担下面分析钢框架结构的倒塌机制提供了一个有效工具。

简介：Thedevelopmentofoffshorewindfarmsindeepwaterfavorsfloatingwindturbinedesigns,butfloatinghorizontalaxiswindturbinesarefacingthechallengeofhighcostofenergy(CoE).ThedevelopmentofinnovativedesignstoreducetheCoEisthusdesirable,suchasfloatingverticalaxiswindturbines(VAWTs).Thisstudydemonstratesthecharacteristicsofaerodynamicloadsandloadeffectsofatwo-bladedfloatingVAWTsupportedbyasemi-submersibleplatform.Fullycoupledsimulationsareperformedusingthetime-domainaero-hydro-servo-elasticcodeSIMO-RIFLEX-AC.Itisfoundthatthrust,lateralforce,andaerodynamictorquevaryconsiderablyandperiodicallywiththerotorazimuthangle.However,thevariationinthegeneratortorquecanbealleviatedtosomeextentbythecontrolstrategyapplied.Moreover,thevariationsofplatformmotionsandtensionsinthemooringlinesarestronglyinfluencedbyturbulentwinds,whereasthoseoftower-basebendingmomentsarenot.Thetowerbasebendingmomentsexhibitnotabletwo-per-revolution(2P)responsecharacteristics.