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500 个结果
  • 简介:Industrialproductionprocessincludingnitricacidproductionisanimportantgreenhousegasemissionsource.AlthoughIPCCguidelineshavegivencalculationmethodsandemissionfactorsforN2Oemissionfromnitricacidproduction,emissionfactorsofnitricacidproductioninChinaarenotgiven.AnditcanbeseenfromthecomparisonoftheguidelinesandregisteredCDMprojectsinChinathattheN2OemissionfactorsgivenintheIPCCguidelinesandactualN2OemissionfromnitricacidproductioninChinadiffergreatlywhilemeasuredN2Oemissiondataisnotavailable,sodeterminationofemissionfactorsforN2OemissionfromnitricacidproductionisanimportantbasicresearchforN2OemissioncalculationinChina.ThemethodthatcalculateN2OemissionfactorsfromnitricacidproductioninChinaisstudiedwithbaselineemissionfactorsbasedonactualmeasurementofregisteredCDMprojectsandthecalculatedemissionfactoriscomparedwiththatgivenintheIPCCguidelinesinthetext.

  • 标签: NITRIC acid production EMISSION factor CLEAN
  • 简介:Aridsoilswherewaterandnutrientsarescarceoccupyover30%oftheEarth’stotalsurface.However,themicrobialautotrophyintheharshenvironmentsremainslargelyunexplored.Inthisstudy,theabundanceanddiversityofautotrophicbacteriawereinvestigated,byquantifyingandprofilingthelargesubunitgenesofribulose-1,5-bisphosphatecarboxylase/oxygenase(RuBisCO)formI(cbbL)responsibleforCO2fixation,inthearidsoilsunderthreetypicalplanttypes(Haloxylonammodendron,Cleistogeneschinensis,andReaumuriasoongorica)inNorthwestChina.Thebacterialcommunitiesinthesoilswerealsocharacterizedusingthe16SrRNAgene.Abundanceofred-likeautotrophicbacteriarangedfrom3.94×105to1.51×106copiesg-1drysoilandthoseofgreen-likeautotrophicbacteriarangedfrom1.15×106to2.08×106copiesg-1drysoil.Abundanceofbothred-andgreen-likeautotrophicbacteriadidnotsignificantlydifferamongthesoilsunderdifferentplanttypes.TheautotrophicbacteriaidentifiedwiththecbbLgeneprimerweremainlyaffiliatedwithAlphaproteobacteria,Betaproteobacteriaandanunculturedbacterialgroup,whichwerenotdetectedinthe16SrRNAlibrary.Inaddition,25.9%and8.1%ofthe16SrRNAgeneswereaffiliatedwithCyanobacteriainthesoilsunderH.ammodendronandR.soongorica,respectively.However,noCyanobacteria-affiliatedcbbLgenesweredetectedinthesamesoils.TheresultssuggestedthatmicrobialautotrophicCO2fixationmightbesignificantinthecarboncyclingofaridsoils,whichwarrantsfurtherexploration.

  • 标签: 细菌丰度 西北干旱 RUBISCO 多样性 酶基因 土壤
  • 简介:WhenaccountingtheCO2emissionsresponsibilityoftheelectricitysectorattheprovinciallevelinChina,itisofgreatsignificancetoconsiderthescopeofbothproducers’andtheconsumers’responsibility,sincethiswillpromotefairnessindefiningemissionresponsibilityandenhancecooperationinemissionreductionamongprovinces.Thispaperproposesanewmethodforcalculatingcarbonemissionsfromthepowersectorattheprovinciallevelbasedonthesharedresponsibilityprincipleandtakingintoaccountinterregionalpowerexchange.Thismethodcannotonlybeusedtoaccounttheemissionresponsibilitysharedbyboththeelectricityproductionsideandtheconsumptionside,butitisalsoapplicableforcalculatingthecorrespondingemissionresponsibilityundertakenbythoseprovinceswithnetelectricityoutflowandinflow.ThismethodhasbeenusedtoaccountforthecarbonemissionsresponsibilitiesofthepowersectorattheprovinciallevelinChinasince2011.Theempiricalresultsindicatethatcomparedwiththeproduction-basedaccountingmethod,thecarbonemissionsofmajorpower-generationprovincesinChinacalculatedbythesharedresponsibilityaccountingmethodarereducedbyatleast10%,butthoseofotherpower-consumptionprovincesareincreasedby20%ormore.Secondly,basedontheprincipleofsharedresponsibilityaccounting,InnerMongoliahasthehighestcarbonemissionsfromthepowersectorwhileHainanhasthelowest.Thirdly,fourprovinces,includingInnerMongolia,Shanxi,HubeiandAnhui,havethehighestcarbonemissionsfromnetelectricityoutflow-14milliontin2011,accountingfor74.42%oftotalcarbonemissionsfromnetelectricityoutflowinChina.Sixprovinces,includingHebei,Beijing,Guangdong,Liaoning,Shandong,andJiangsu,havethehighestcarbonemissionsfromnetelectricityinflow-11milliontin2011,accountingfor71.44%oftotalcarbonemissionsfromnetelectricityinflowinChina.Lastly,thispaperhasestimatedtheemissionfactorsofelectricity

  • 标签: SHARED RESPONSIBILITY power GENERATION efficiency carbon
  • 简介:Onthebrightly-lit,intenselywatchedworldstage,creatingapositiveinternationalimageinvolvesadvancing'Chinesestories'inthebestmannerpossibleandgivingChineseviewsonthe'stories'thatcropup.China'sinternationalimagerequirespreciselanguage,clearexpression,and,aboveall,thebest'stories'toldwell.

  • 标签: 国际形象 中国人 故事 世界和平 宣传工作 领导人
  • 简介:August10~20,2015Chinarareearthmarketremainedstagnantrecently.DemandfromNdFeBmagneticindustrywasweak,whichledtotheconstantpricefallingofdidymium,dysprosiumandterbiumrelatedproducts.Depressedphosphorindustryloweredthepriceofeuropiumandyttrium.Themarketoflanthanumandceriumwasflat.Exportmarketofrareearthsremainedinactiveaswell.

  • 标签: LANTHANUM NdFeB inactive Export CERIUM PHOSPHOR
  • 简介:OnJune15,2015,the10thAnnualConferenceoftheConsortiumforWesternChinaDevelopmentStudies,withthethemeofNewUrbanizationinWesternChinaDevelopment,washeldatChongqing,China.Theconferencewasco-sponsoredbySouthwestUniversity,ConsortiumforWesternChinaDevelopmentStudies,WesternDevelopment

  • 标签: CONSORTIUM CHONGQING titled Chengdu ACADEMICIAN So
  • 简介:May1~10,2015Rareearthmarketwasinactiverecently.Consumerswerenoteagertoincreaseinventoriesfortheythoughtthatrareearthpricemightgofurtherdownward.TransactionsofPrNdoxideandPrNdalloywerequiteslowbutpricekeptstable.SluggishdemandrestrainedtheconsumptionofDyoxide.PriceofDyoxideandDyFealloy

  • 标签: inactive EAGER restrained DOWNWARD Director DOWNTURN
  • 简介:October10-20,2015Foraperiodofpricedownturn,thesixrareearthgroupsalldecidedtorestrictproductioninordertomaintainastableprice.Inquiriesindomesticrareearthmarketincreasedbutfewtransactionsweremade.Pricesofpraseodymium,neodymium,gadoliniumanddysprosiumwerestrongbutpricesofotherproductsstillhoveredatlowerlevels.However,theconsumersincreasedenquiriesbutdidnotmakesomanydealsbecauseoftheweakdemand.Theseparationplantswerereluctanttosellrareearthproductsatlowprice

  • 标签: NEODYMIUM PRICES decided MAINTAIN DOWNTURN restrict
  • 简介:AttheinvitationoftheChineseAssociationforInternationalUnderstanding(CAFIU),a13-memberAfricanNGOdelegationcomposedofrepresentativesfromSouthAfrica,TanzaniaandNamibiavisitedBeijingandGuizhoufromNovember10toNovember19.Membersofthe

  • 标签: AFRICAN DELEGATION INVITATION visited GUIZHOU cooperation
  • 简介:Heartfailure(HF)isacomplexclinicalsyndromethatresultsfromanystructuralorfunctionalimpairmentofventricularfillingorejectionofblood.HFisoneofthemostimportantandsevereendstagesofmanycardiovasculardiseases.EpidemiologicalstudiesofHFhavefocusedmainlyontheprevalence,incidence,mortality,fatality,anddistributionandtemporaltrendsoftheseindicatorsamongdifferentpopulations.ThisreviewhighlightsimportantepidemiologicalstudiesofHFinChina.

  • 标签: HEART FAILURE CARDIOVASCULAR DISEASES EPIDEMIOLOGICAL study
  • 简介:Overeducationiswidespreadacrossthecountriesintheworld.However,notmuchisknownaboutthepatternsofovereducationinChina.Thispaperexamineslevels,trendsandpatternsofovereducationinChinaoverthelast20years.OvereducationrateinChinaincreasedfrom7.24%in1990to12.26%in2000,andfurtherto28.16%in2010.Thepacewasmuchmorerapidintheseconddecadethaninthefirstdecade.Overeducationissubstantialacrossallthepopulationsubgroups.withwideningdifferentials.OvereducationratesinthebigcitieslikeBeijingandShanghaiaremuchhigherthanelsewhereinChina.China’srapidlyincreasingovereducationislargelyaresultoftheimplementationofcollegeexpansionpolicystartedinthelate1990s.

  • 标签: 中国模式 过度 教育 高校扩招 大城市