简介:Industrialproductionprocessincludingnitricacidproductionisanimportantgreenhousegasemissionsource.AlthoughIPCCguidelineshavegivencalculationmethodsandemissionfactorsforN2Oemissionfromnitricacidproduction,emissionfactorsofnitricacidproductioninChinaarenotgiven.AnditcanbeseenfromthecomparisonoftheguidelinesandregisteredCDMprojectsinChinathattheN2OemissionfactorsgivenintheIPCCguidelinesandactualN2OemissionfromnitricacidproductioninChinadiffergreatlywhilemeasuredN2Oemissiondataisnotavailable,sodeterminationofemissionfactorsforN2OemissionfromnitricacidproductionisanimportantbasicresearchforN2OemissioncalculationinChina.ThemethodthatcalculateN2OemissionfactorsfromnitricacidproductioninChinaisstudiedwithbaselineemissionfactorsbasedonactualmeasurementofregisteredCDMprojectsandthecalculatedemissionfactoriscomparedwiththatgivenintheIPCCguidelinesinthetext.
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.
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
简介:Onthebrightly-lit,intenselywatchedworldstage,creatingapositiveinternationalimageinvolvesadvancing'Chinesestories'inthebestmannerpossibleandgivingChineseviewsonthe'stories'thatcropup.China'sinternationalimagerequirespreciselanguage,clearexpression,and,aboveall,thebest'stories'toldwell.
简介:August10~20,2015Chinarareearthmarketremainedstagnantrecently.DemandfromNdFeBmagneticindustrywasweak,whichledtotheconstantpricefallingofdidymium,dysprosiumandterbiumrelatedproducts.Depressedphosphorindustryloweredthepriceofeuropiumandyttrium.Themarketoflanthanumandceriumwasflat.Exportmarketofrareearthsremainedinactiveaswell.
简介:OnJune15,2015,the10thAnnualConferenceoftheConsortiumforWesternChinaDevelopmentStudies,withthethemeofNewUrbanizationinWesternChinaDevelopment,washeldatChongqing,China.Theconferencewasco-sponsoredbySouthwestUniversity,ConsortiumforWesternChinaDevelopmentStudies,WesternDevelopment
简介:May1~10,2015Rareearthmarketwasinactiverecently.Consumerswerenoteagertoincreaseinventoriesfortheythoughtthatrareearthpricemightgofurtherdownward.TransactionsofPrNdoxideandPrNdalloywerequiteslowbutpricekeptstable.SluggishdemandrestrainedtheconsumptionofDyoxide.PriceofDyoxideandDyFealloy
简介:October10-20,2015Foraperiodofpricedownturn,thesixrareearthgroupsalldecidedtorestrictproductioninordertomaintainastableprice.Inquiriesindomesticrareearthmarketincreasedbutfewtransactionsweremade.Pricesofpraseodymium,neodymium,gadoliniumanddysprosiumwerestrongbutpricesofotherproductsstillhoveredatlowerlevels.However,theconsumersincreasedenquiriesbutdidnotmakesomanydealsbecauseoftheweakdemand.Theseparationplantswerereluctanttosellrareearthproductsatlowprice
简介:AttheinvitationoftheChineseAssociationforInternationalUnderstanding(CAFIU),a13-memberAfricanNGOdelegationcomposedofrepresentativesfromSouthAfrica,TanzaniaandNamibiavisitedBeijingandGuizhoufromNovember10toNovember19.Membersofthe
简介:Heartfailure(HF)isacomplexclinicalsyndromethatresultsfromanystructuralorfunctionalimpairmentofventricularfillingorejectionofblood.HFisoneofthemostimportantandsevereendstagesofmanycardiovasculardiseases.EpidemiologicalstudiesofHFhavefocusedmainlyontheprevalence,incidence,mortality,fatality,anddistributionandtemporaltrendsoftheseindicatorsamongdifferentpopulations.ThisreviewhighlightsimportantepidemiologicalstudiesofHFinChina.
简介:Overeducationiswidespreadacrossthecountriesintheworld.However,notmuchisknownaboutthepatternsofovereducationinChina.Thispaperexamineslevels,trendsandpatternsofovereducationinChinaoverthelast20years.OvereducationrateinChinaincreasedfrom7.24%in1990to12.26%in2000,andfurtherto28.16%in2010.Thepacewasmuchmorerapidintheseconddecadethaninthefirstdecade.Overeducationissubstantialacrossallthepopulationsubgroups.withwideningdifferentials.OvereducationratesinthebigcitieslikeBeijingandShanghaiaremuchhigherthanelsewhereinChina.China’srapidlyincreasingovereducationislargelyaresultoftheimplementationofcollegeexpansionpolicystartedinthelate1990s.