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装备学院党委领导带头讲规矩守纪律 接受群众监督

2019-10-20 03:41 来源:慧聪网

  装备学院党委领导带头讲规矩守纪律 接受群众监督

  ThreecrestedibisesflyonSadoIsland,Japan,onDec27,2016.[Photo/IC]TOKYO-Crestedibises,theiconicbirdsthatwereonthevergeofextinctioninJapaninthe1980s,arenowprosperingandprovidingaboosttothelocaleconomyontheislandofSado,thankstoChina,theisland,white-plumedcrestedibisescanbeseenhuntingforfoodinthepaddyfields."Wecanseethesebirdsforaginginthemorningandeveningallseasonsnow,astherearecrestedibisesnestsnearourricefields,",coveringanareaof855squarekilometersandwithapopulationof55,000people,isisseenasanadvantageousresourceontheislandgivenitsrecognitionbytheUnitedNationsFoodan,,thenumberofcrestedibisesinJapanplunged",foodconsumedbycrestedibises,suchasfrogsandsmallfish,disappearedfromthepaddies,andcrestedibisesalsowenttoextinct,"saidTakayukiNishimaki,,theJapanesegovernmentcapturedthelastfivewi,thelastJapanese-borncrestedibisdiedatthecenterattheageof36,screstedibisesontheislandarealldescendantsofthosefromnorthwestChina,whiletheworldwasholdingitsbreathfortheendangeredspecies,sevenwildcrestedibiseswerediscoveredinthemountainsofShaanxi."Thegloomintheconservationcenter(inSado)wasdispelledbythegoodnews....Thesebirdsweretosavethespeciesfromextinction,"HiroyukiIshi,anenvironmentaljournalistandscientist,,Chinasuccessfullylaunchedit,twocrestedibiseswenttoSadoasagiftfromChina,,,thecityofSadoplanstoincreasethenumberofforeigntouristsfrom1,510in2011to5,000by2019,accordingtoHiroakiIwasaki,alocalgovernmentofficial,,crestedibiseshavebecomeabrandoftheirownforlocalproducts,especiallyagriculturalproducts."Weproduce20,000tonsofriceeveryyear,enoughtosatisfytheneedsof500,000peopleayear,whichistentimesofthepopulationofSado,"saidManabuWatabe,,localfarmersstressedthattheirriceis"producedinharmonywithcrestedibises".Toproducesuchrice,farmersmustmakethericepaddiesaneffectiveecologicalsystem,wheresmallcreaturescoexistinharmonyandcrestedibiseshaveplentyoffood,Nishimakiexplained."Crestedibisesincreasedemandsonprotectingtheenvironment,andthebirdssuccessfullybreedinghereshowsthatthericehereissafe,"AcombinationphotoshowstheTimeWarnersharespriceattheNewYorkStockExchangeandATTlogoonNov15,2017andonOct23,2016,TTs$85billionpurchaseofTimeWarner,rejectingobjectionsbytheJusticeDepartmentan,sargumentthattheacquisitionofTimeWarnerbyATT,theworldslargesttelecommunicationscompany,wouldleadtofewercho,,DonaldTrumpsaidhewouldopposethedeal"becauseitstoomuchconcentrationofpowerinthehandsoftoofew".Aspresident,TrumphasrepeatedlycriticizedCNN,whichisownedbyTimeWarnersunitTurnerBroadcasting,oftencallingit"fakenews".InadditiontoCNN,TimeWarnerownsTVnetworksHBO,,whichcouldgiveitnewkindsofsubscriptionsfromits119millionmobile,ionandmoviemakers,includingComcastCorp,whoarguedtheJusticeDepartmentcase,saidthedepartmentwouldre,includingdebt,wouldbethefourth-largestdealattemptedintheglobaltelecom,mediaandentertainmentspace,,

BritainsroyalpatriarchPrincePhilip,filephoto.[Photo/VCG]LONDON-BritainsroyalpatriarchPrincePhilipturned97onSunday,-leastofalloverhimself-QueenElizabethIIshusbandhasnoplansforcelebrationsashemovesastepnearerto100."Hewillbespendingitprivately,"sofficialbirthdaycelebrationsonSaturday,whenotherseniorroinAugust,thelastof22,,hedidattendtheweddingofhisgrandsonPrinceHarryandMeghanMarkleatWindsorCastleonMay19,,,,,AnIlluminatingPath(1998)byDavidLaChapelle[PhotoprovidedtoChinaDaily]WhenMichaelJacksontookthestageattheMotown25anniversaryshowatthePasadenaCivicAuditoriumin1983,hegaveabaptismalperformanceofBillieJeanonlivetelevisioninwhatwouldbecomehistrademarklook–thesequin-coveredblackjacket,rhinestoneglove,,Jackson"moonwalked"–,inwhichthedancerslidesbackwardsbutappearstobewalkingforwards,markedthebiggestm,2018;hediedofcardiacarrestonJune25,2009athisLosAngeleshom,almostadecadeafterhisdeath,theKingofPop,nowinexcessofonebillion,continuetogrow,hisshortfilmsarestillwatchedandhisglobalfanbaseremainseverloyal.

  Chinawilltakeaslewofincentivestofurtherboostimportsinordertodrivedomesticindustrialupgradingandbettermeettheincreasinglydiversifiedconsumptiondemandsofpeople,theStateCoun,PresidentXiJinpingannouncedthatChinawillexpandimportsandachievegreaterbalanceininternationalpaymentsunderthecurrentaccount,awillactivelyexpandimportsandlowerimporttariffsongoodssuchasautomobilesandeverydayconsumerproducts,topromoteindustrialupgradingandmerofgoodsfornineconsecutiveyears,tradeinservices,lyconsumergoods,medicine,aswellasnursingandrehabilitationfacilities,tionalproceduresandunreasonablepriceincreases,,andimportsofproducerservicescoveringresearchanddesign,tradelogistics,consultingservices,,wiromotingtheAuthorizedEconomicOperator(AEO),,acreditinformationsysteminforeigntradeaswellasenhancedintellectualpropertyrightsprotectionareneedewroundofhigh-standardopening-up,toeconomicrestructuring,andtoeconomictransformationandhigh-qualitydevelopment,,,ThreecrestedibisesflyonSadoIsland,Japan,onDec27,2016.[Photo/IC]TOKYO-Crestedibises,theiconicbirdsthatwereonthevergeofextinctioninJapaninthe1980s,arenowprosperingandprovidingaboosttothelocaleconomyontheislandofSado,thankstoChina,theisland,white-plumedcrestedibisescanbeseenhuntingforfoodinthepaddyfields."Wecanseethesebirdsforaginginthemorningandeveningallseasonsnow,astherearecrestedibisesnestsnearourricefields,",coveringanareaof855squarekilometersandwithapopulationof55,000people,isisseenasanadvantageousresourceontheislandgivenitsrecognitionbytheUnitedNationsFoodan,,thenumberofcrestedibisesinJapanplunged",foodconsumedbycrestedibises,suchasfrogsandsmallfish,disappearedfromthepaddies,andcrestedibisesalsowenttoextinct,"saidTakayukiNishimaki,,theJapanesegovernmentcapturedthelastfivewi,thelastJapanese-borncrestedibisdiedatthecenterattheageof36,screstedibisesontheislandarealldescendantsofthosefromnorthwestChina,whiletheworldwasholdingitsbreathfortheendangeredspecies,sevenwildcrestedibiseswerediscoveredinthemountainsofShaanxi."Thegloomintheconservationcenter(inSado)wasdispelledbythegoodnews....Thesebirdsweretosavethespeciesfromextinction,"HiroyukiIshi,anenvironmentaljournalistandscientist,,Chinasuccessfullylaunchedit,twocrestedibiseswenttoSadoasagiftfromChina,,,thecityofSadoplanstoincreasethenumberofforeigntouristsfrom1,510in2011to5,000by2019,accordingtoHiroakiIwasaki,alocalgovernmentofficial,,crestedibiseshavebecomeabrandoftheirownforlocalproducts,especiallyagriculturalproducts."Weproduce20,000tonsofriceeveryyear,enoughtosatisfytheneedsof500,000peopleayear,whichistentimesofthepopulationofSado,"saidManabuWatabe,,localfarmersstressedthattheirriceis"producedinharmonywithcrestedibises".Toproducesuchrice,farmersmustmakethericepaddiesaneffectiveecologicalsystem,wheresmallcreaturescoexistinharmonyandcrestedibiseshaveplentyoffood,Nishimakiexplained."Crestedibisesincreasedemandsonprotectingtheenvironment,andthebirdssuccessfullybreedinghereshowsthatthericehereissafe,"

  [Photo/VCG]ChinaneedstobepreparedwithflexibleplanstorespondtotheinconsistenttradeandeconomicpoliciesoftheadministrationofUSPresidentDonaldTrump,asbothsidesstillfaceahostofunresolvedissuesrelatedtobilateraltrade,evelofficialtalksthatconcludedinBeijingonSunday,theUSgovernmentmaystillreleasealistonJune15imposinga25percenttariffon$50billionworthofChinesegoodscontaining"industrialsignificanttechnology",sMinistryofCommercestressedonThursdaythatthenationiswillingtoexpandimportsfromtheUSiftheycanmeet"halfway",sstanceisconsist,includingtariffhikes,theeconomicandtradeachievementsnegotiatedbythet,aneconomistatTsinghuaUniversityandformercentralbankmonetarypolicycommitteemember,saidChinaisabletoadjustandupgradeitseconomicstructurefromalong-termperspective."Againstthatbackdrop,,",Lisaid,suchasindustrixtfewmonths,saidLi."Thenegotiationswillbealongandbumpyroad,"hesaid."Weshouldmaintainabalancedframeofmind,ratherthanbeirritatedbytheWhiteHousesstatementsortheUSpresidentsmessagesonTwitter.""IfChinacannotachievesubstantialresultsthroughdialogue,itmuststudytheUSmovesandpreparemeasurestocountertheUSaction,"saidLongGuoqiang,,formerchiefeconomistandseniorvice-presidentoftheWorldBankfrom2008to2012,saidtheUSshouldbeawarethatexportingmoreenergyandagriculturalproductstoChinawillnotfundamentallychangethesituationofthetradedeficitwithChina,andwhatChina,Linsaid,thetwosidesshouldexpandtradenegotiationtopicsfromenergyandagric,Hungarysministerofforeignaffairsandtrade,calledonbothsidestorationallyresolvetradedisputes."Ofcourseweunderstandtherecentdevelopmentoftheglobaltradingsystem,weseethatrestrictivemeasuresandcustomsbarriershavebeensetup,"SzijjartosaidonthesidelinesoftheThirdMinisterialConferenceofChinaandCentralandEasternEuropeanCountriesonPromotingTradeandEconomicCooperationheldinNingboonThursday."ChinaisHungarynationaltradeorder,insteadofadestructivetradewar,"toarecordhigh,frobusteconomicgrowthinthesecondquarter.Thisvasegatheringdustinaloftturnedouttobeahugely-importantChinesevasewhichhassoldafteratenseauctionroombattle.[Photo/VCG]UnsuspectingownersbroughtthetreasureinashoeboxforvaluationAlong-forgottenandrareChineseim($19million)atSothebyhevase-decoratedwithdeerandcranes-at500,ssaidthevaseisofexceptionalrarityandtheonlyknownexampleofitskind,bearingamarkfromthereignoftheQianlongEmperor(1736-95).The18thcenturyporcelainvasewasfoundbychanceamongdozensofotherpiecesofChinoiseriesinanatticbyitsunsuspectingowners,,SothebysAsianartsexpert,openedtheboxtoexaminethevase,hewasimmediatelystruckbyitsquality."Thisisamajorworkofart,itisasifwehadjustdiscoveredaCaravaggio,"uncleandappearsa,"tookthetrain,thenthemetroandwalkedonfootthroughthedoorsofSothebysandintomyofficewiththevaseinashoeboxprotectedbynewspaper".Headded:"Whensheputtheboxonmydeskandweopeneditwewereallstunnedbythebeautyofthepiece."However,theexactprovenanceoftheitembefore1947cannotbetraced.

AcombinationphotoshowstheTimeWarnersharespriceattheNewYorkStockExchangeandATTlogoonNov15,2017andonOct23,2016,TTs$85billionpurchaseofTimeWarner,rejectingobjectionsbytheJusticeDepartmentan,sargumentthattheacquisitionofTimeWarnerbyATT,theworldslargesttelecommunicationscompany,wouldleadtofewercho,,DonaldTrumpsaidhewouldopposethedeal"becauseitstoomuchconcentrationofpowerinthehandsoftoofew".Aspresident,TrumphasrepeatedlycriticizedCNN,whichisownedbyTimeWarnersunitTurnerBroadcasting,oftencallingit"fakenews".InadditiontoCNN,TimeWarnerownsTVnetworksHBO,,whichcouldgiveitnewkindsofsubscriptionsfromits119millionmobile,ionandmoviemakers,includingComcastCorp,whoarguedtheJusticeDepartmentcase,saidthedepartmentwouldre,includingdebt,wouldbethefourth-largestdealattemptedintheglobaltelecom,mediaandentertainmentspace,,

  Asmellwake-upalarmcalledSensorWakeTrioisraisingfundsthroughacrowdfundingcampaignuntilJuly13.[Photo/IC]Entrepreneurshavebeenchangingpeople,whichcouldwakeyouupwithsmellssuchasfreshlybrewedcoffee,,apatternoflightsaretriggeredonitsface,beforefinally,afteranotherminute,agentlemelodycommencesjustincasethewaftingsmellhasntalreadywokenyouup,accordingtoKickstarter,wherethealarm,onecann,andonecanchangecapsulestoswitchmorningaromasfromdaytoday.

  AglasscircularbridgeinFuxiShantouristattractionwillopenonJune16aftereightmonthsconstructioninXinmicity,CentralChinasHenanprovince,June12,2018.[Photo/VCG]WorldslongestglasscircularbridgeinFuxiShantouristattractionwillopentothepublicaftereightmonthsconstructioninXinmicity,CentralChinasHenanprovince,onJune16,"skywalk".Itis360metershigh,andextends30metersoutofthecliffthatisnearlyninemeterslongerthantheglassbridgeintheColoradoGrandCanyonintheUnitedStates,whichisclaimedtobethe"EighthWonderoftheWorld".StudentsonstagecreateafeastfortheeyesduringAidiInternationalSchool’sculturalfestivalheldattheForbiddenCityConcertHallinBeijingonJune12.[]Withthethemeof"PayingTributetoChineseTraditionalCulture",aculturalfestivalorganizedbyAidiInternationalSchool,aleaderininternationaleducationinChina,:thesummermusicconcertGlobalCitizenswithaChineseIdentity,theculturalsalonNationalTreasureKeeper,,founderoftheAidiInternationalSchool,thebrilliantperformancesandworksofartfromstudentsaretheepitomeoftheircarefulstudiesinChinesecultureandworldculture."ForChineseinternationalstudents,learningaboutChineseculturecanhelpthemestablishtheirownculturalidentity,whileworldculturalstudiescanbroadentheirhorizons."Duringthe100-minutesummermusicconcert,avarietyofprogramsfeaturingmusic,dance,choirandoperawerepresented,,Chineseauthor,playwrightandsingerWuShuang,togetherwithseveralprimaryschoolstudents,performedthemelodramaMyStage,theclimaxoftheconcert."Thosethingsbelongingtoanationshouldbesharedwiththeworld,"saidWu."AsIhavelivedinforeigncountriesformorethan10years,IdeeplyunderstandtheimportanceofmixingEasterncivilizationwiththeWest."Shesharedherhopethatmoreandmorechildrencanactasabridgebetweendifferentcultures.

  ChineseCultureandTourismMinisterLuoShugangdeliveresthekeynotespeechduringthe15thCulturalMinistersMeetingoftheMemberStatesoftheShanghaiCooperationOrganizationonMay17.[PhotobyWuWei/]The15thCulturalMinistersMeetingoftheMemberStatesoftheShanghaiCooperationOrganization(SCO)washeldinSanya,Hainanprovince,betweenMay16and17,witheightmemberstatesco-signingthedocumentMinutesofthe15thCulturalMinistersMeetingoftheMemberStatesoftheShanghaiCooperationOrganizationthatfocusreementonIntergovernmentalCulturalCooperationfortheMemberStatesoftheShanghaiCooperationOrganizationandPressReleaseforthe15thCulturalMinisters,includingIndia,Kazakhstan,Kyrgyzstan,Pakistan,Russia,Tajikistan,andUzbekistan,aswellasrepresentati,Luointroducedthegreatsignificanceofthe19thNationalCongressoftheCommunistPartyofChinaandtheThoughtonSocialismwithChinesecharacteristicsforaNewEra,andsaidthatChinawillworkhandinhandwiththerestoftheworldtocreateacommunityofsharedfutureformankind.

  ThelogoforDouyin,picturedonMay25,2018.[Photo/VCG]Chinasshort-videoplatformDouyinreleaseditsuservolumeforthefirsttimeonTuesday,withmorethaasdifferentfromthreemonthsago,whenareportissuedbytheinternetconsultancyAnalysysshowedthatDouyinsarchrivalKuaishouheldasafeleaduptoFebruarywith108milliondailyactiveusers,evenmorethanthecombinedvolumeoftheotherthreevideoapps—Douyin,sofficialWeChataccount,theplatformhasincreasedby80milliondailyactiveusersinthespanofthreemonths,sdailyuserpoolwentthroughasignificantexpansionfromlessthan40milliontonearly70millionduringtheSpringFestivalholiday,,seniordirectorwithDouyin,sayingthatduringSpringFestivalthemobilityofexistingusers,mainlyspreadamongfirstorsecond-tiercities,,Douyinhassinceexpandeditsreachtovariousothercategories,suchasgourmetfood,exercise,travelandculture,,morethan40percentoftheusersonDouyinareaged24-30,compared,Douyinhasalsoattractedmorethan500governmentbodiesandmediaorganizationstoopenanaccountonitsplatform,includingtheState-ownedAssetsS,,withAllWeatherTMTquotingdatafromtheshort-videoapplicationownedbyBeijingByteDanceTechnology,,founderandCEOofBytedance,saidinMar,anoverseasiterationofDouyin,,avideosocialnetworkpurchasedbyToutiaoinNovember,haveprovidedservicesinmorethan150countriesandregions,enjoyingthefastestgrowthintheworldamongmobileapps.Shanghaigovernmentandinternationalpartnerscelebratedthelaunchof‘AmazingShanghai’,apromotionaleventfortheinauguralChinaInternationalImportExpo,atLiverpool’InternationalBusineesFestivalonTuesday.[PhotobyCecilyLiu/ChinaDaily]ShanghaidelegatesvisitingsistercityLiverpoolthisweekfortheInternationalBusinessFestivalareurgingBritishcomp,vice-mayorofShanghai,saidthenewexpoisavitalmovetofurtheropentheChinesemarkettotherestoftheworld,’sflagshipbiannualtradefair,where7,000internationalbusinessesgatheroverthreeweeksseekingtosecuretradedeals.“Forbusinesseswithaglobalvision,theChinaInternationalImportExpoissomethingyoucannotmiss,”saidXu.“Chinahasabigmarket,whereconsumptionanddemandforimportedgoodsgrowrapidly.”Chinaisexpectedtoimportmorethan$10trillioningoodsandservicesoverthenextfiveyears,’stransitionintoaconsumption-ledgrowthmodel,,co-hostedbyChina’sMinistryofCommerceandShanghaismunicipalgovernment,’sreformandopeningup,whichprovidesthebackdroptoChina’,PresidentXiJinpingannouncedfurthermeasurestoopenChina’,vice-mayorofLiverpool,saidthestronglinkbetweenthetwocitiesischaracterizedbytrade,partnership,,100companiesacrossmorethan100countriesandregionshaveregisteredtoattendtheChinaInternationalImportExpo,onNov5–10,,andbusinessesfromShanghaihavebeenvisitingLiverpool’hitecturaldesignbetweenShanghai’swaterfront,alsoknownastheBund,andthefamousThreeGracesskylineatLiverpool’,aninitiativeoftheLiverpoolgovernment,hasalreadyboostedUKtradeandinvestmentactivitiesbyacumulated600millionpounds($800million).Theorganizershopethe2018festivalw,headofHSBCUK’sChinaDesk,saidUK-Chinatraderelationsareyettoreachtheirfullpotential.“Thereisgreatcomplementarity,asBritainhasexpertiseinmanysectorsthatareofstrategicfocusinChina,includingrobotics,railwaytransport,marineenergy,newenergy,newmaterials,andpharmaceutical,”,BritishcompaniesstillencounterchallengesinChina,includingculturalunderstanding,localmanagementpracticesandfindingsuitablelocalstrategyandbusinessmodels,hesaid.

  PresidentXiJinping,alsogeneralsecretaryoftheCommunistPartyofChinaCentralCommitteeandchairmanoftheCentralMilitaryCommission,talkswithacademicianofChineseAcademyofEngineeringGuanHuashiatPilotNationalLaboratoryforMarineScienceandTechnologyduringaninspectiontourinQingdao,EastChinasShandongprovince,June12,2018.[Photo/Xinhua]PresidentXiJinpingconductedaninspectiontourinthecitiesofQingdaoandWeihaiofShandongology(Qingdao),toknowmoreaboutmajorfrontiersciences,theindependentresearchanddevelopmentofmarinehigh-endequipment,,GuanHuashi,anacademicianfromChineseAcademyofEngineering,s"bluedrugstore".

  RepresentativesfromChinaandCentralandEasternEuropean(CEE)countriesattendthe2ndHighLevelMeetingoftheCoordinationMechanismforCooperationinForestrybetweenChinaandtheCEECinBelgrade,Serbia,onMay14,2018.[Photo/Xinhua]BELGRADE--ChinaandCentralandEasternEuropean(CEE)countriesarewillingtofurtherdeepentheircooperationintheareaofforestryandworktogetheronpreventingnegativeeffectsofclimatechange,participantsofthe2ndHighLevelMeetingoftheCoordinationMechan,representativesofChinaand16CEEcountriesgatheredatthebiennialeventtoaccesstheprogressachievedwithinthemechanisminthepasttwoyearssinceitwasestablished,layplansfortheupcomingtwoyears,,deputyheadofChinasStateForestryandGrasslandAdministration,saidatthepressconferenceafterthemeetingthatChinaand16CEEcountrieshavecommonviewsonclimatechange,andneedtocopetogetheragainstitsnegativeeffects,,whichhasbecomeagloballeaderinforestingoverthepastyears,wishestoexchangeexperienceswithCEEcountriesthroughthe16+1cooperationmechanism."TheemissionofCO2shouldbedecreased,whilesurfaceunderforestsshouldbeincreased,andthisisanhonorabletaskforwhichwealsohavethesupportofourpeople,"alplatformsamongthemembersofthe16+1cooperationmechanisminordertoboostcooperationamonguniversitiesandacademicbodies,andpromoteexchangeinscienceandresearch.

  ThelogoforDouyin,picturedonMay25,2018.[Photo/VCG]Chinasshort-videoplatformDouyinreleaseditsuservolumeforthefirsttimeonTuesday,withmorethaasdifferentfromthreemonthsago,whenareportissuedbytheinternetconsultancyAnalysysshowedthatDouyinsarchrivalKuaishouheldasafeleaduptoFebruarywith108milliondailyactiveusers,evenmorethanthecombinedvolumeoftheotherthreevideoapps—Douyin,sofficialWeChataccount,theplatformhasincreasedby80milliondailyactiveusersinthespanofthreemonths,sdailyuserpoolwentthroughasignificantexpansionfromlessthan40milliontonearly70millionduringtheSpringFestivalholiday,,seniordirectorwithDouyin,sayingthatduringSpringFestivalthemobilityofexistingusers,mainlyspreadamongfirstorsecond-tiercities,,Douyinhassinceexpandeditsreachtovariousothercategories,suchasgourmetfood,exercise,travelandculture,,morethan40percentoftheusersonDouyinareaged24-30,compared,Douyinhasalsoattractedmorethan500governmentbodiesandmediaorganizationstoopenanaccountonitsplatform,includingtheState-ownedAssetsS,,withAllWeatherTMTquotingdatafromtheshort-videoapplicationownedbyBeijingByteDanceTechnology,,founderandCEOofBytedance,saidinMar,anoverseasiterationofDouyin,,avideosocialnetworkpurchasedbyToutiaoinNovember,haveprovidedservicesinmorethan150countriesandregions,enjoyingthefastestgrowthintheworldamongmobileapps.ThreecrestedibisesflyonSadoIsland,Japan,onDec27,2016.[Photo/IC]TOKYO-Crestedibises,theiconicbirdsthatwereonthevergeofextinctioninJapaninthe1980s,arenowprosperingandprovidingaboosttothelocaleconomyontheislandofSado,thankstoChina,theisland,white-plumedcrestedibisescanbeseenhuntingforfoodinthepaddyfields."Wecanseethesebirdsforaginginthemorningandeveningallseasonsnow,astherearecrestedibisesnestsnearourricefields,",coveringanareaof855squarekilometersandwithapopulationof55,000people,isisseenasanadvantageousresourceontheislandgivenitsrecognitionbytheUnitedNationsFoodan,,thenumberofcrestedibisesinJapanplunged",foodconsumedbycrestedibises,suchasfrogsandsmallfish,disappearedfromthepaddies,andcrestedibisesalsowenttoextinct,"saidTakayukiNishimaki,,theJapanesegovernmentcapturedthelastfivewi,thelastJapanese-borncrestedibisdiedatthecenterattheageof36,screstedibisesontheislandarealldescendantsofthosefromnorthwestChina,whiletheworldwasholdingitsbreathfortheendangeredspecies,sevenwildcrestedibiseswerediscoveredinthemountainsofShaanxi."Thegloomintheconservationcenter(inSado)wasdispelledbythegoodnews....Thesebirdsweretosavethespeciesfromextinction,"HiroyukiIshi,anenvironmentaljournalistandscientist,,Chinasuccessfullylaunchedit,twocrestedibiseswenttoSadoasagiftfromChina,,,thecityofSadoplanstoincreasethenumberofforeigntouristsfrom1,510in2011to5,000by2019,accordingtoHiroakiIwasaki,alocalgovernmentofficial,,crestedibiseshavebecomeabrandoftheirownforlocalproducts,especiallyagriculturalproducts."Weproduce20,000tonsofriceeveryyear,enoughtosatisfytheneedsof500,000peopleayear,whichistentimesofthepopulationofSado,"saidManabuWatabe,,localfarmersstressedthattheirriceis"producedinharmonywithcrestedibises".Toproducesuchrice,farmersmustmakethericepaddiesaneffectiveecologicalsystem,wheresmallcreaturescoexistinharmonyandcrestedibiseshaveplentyoffood,Nishimakiexplained."Crestedibisesincreasedemandsonprotectingtheenvironment,andthebirdssuccessfullybreedinghereshowsthatthericehereissafe,"

  

  装备学院党委领导带头讲规矩守纪律 接受群众监督

 
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自来水检出"水中PM2.5" 华东华南最重

2019-10-20 08:51 | 环球时报-环球网 | 手机看国搜 | 打印 | 收藏 | 扫描到手机
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核心提示:中国尚无饮用水亚硝胺水质标准目前,① 消毒副产物饮用水中的亚硝胺,饮用水中的亚硝胺是否需要制定标准。

最近,很多人被这样一则新闻震惊了——《我国消化道癌症高发或与喝水有关,饮用水中亚硝胺是美国3.6倍》。此新闻源自何处呢?

原来,清华大学环境学院历时3年多,覆盖全国23个省、44个大中小城市和城镇,从出厂水、用户龙头水到水源水,针对饮用水中亚硝胺浓度和种类进行了一次科研调查,这项调查可以说是迄今为止国内最大最全面的一次。

“调查结果出乎我意料:一是种类那么多,二是浓度比想象的高。”负责上述饮用水调查的清华大学环境学院副教授陈超说,他从事亚硝胺类消毒副产物研究已近十年,但人们最近才开始关注和重视饮用水中的亚硝胺。

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饮用水亚硝胺检出率不容忽视

这些天,调研报告中的一系列数据被陆续公之于众:

“中国是世界上亚硝胺检出情况最为多样的国家,在水中检测出9种亚硝胺类物质,其中亚硝基二甲胺(NDMA)的浓度最高。”

“中国的出厂水和龙头水中的亚硝胺检出情况要比美国严重,出厂水和龙头水中NDMA的平均浓度分别为11和13ng/L(纳克每升),水源水中的亚硝胺前体物(母体物质)平均为66ng/L,除了NDMA之外的亚硝胺在中国的检出率是美国的数十倍。”

亚硝胺风险高的水样主要来自两个区域——华东区和华南区。检出龙头水中最高值达到19ng/L。值得关注的是,长江三角洲地区既是中国经济最发达、人口最密集的区域,也是亚硝胺浓度最高的区域,NDMA浓度分别为27ng/L和29ng/L。

国际癌症研究署(IARC)把亚硝胺列为2A类致癌物,该物质对实验动物的致癌性证据充足。

饮用水中的亚硝胺来自何处?

① 消毒副产物

饮用水中的亚硝胺,过去一直被认为是可接受的“消毒副产物”。消毒是保证饮用水安全最重要的一步。一直以来,环境学家都认为,与消毒不充分可能引起的风险相比,消毒副产物带来的健康风险小,不能为控制消毒副产物而牺牲消毒效果。

科学界一直在企图寻找一种可代替氯的消毒剂,但至今没有发现。“你很难再找到一种消毒剂像氯一样廉价又相对安全。”同济大学环境科学与工程学院教授高乃云说。

②水源污染加重

和西方主要由消毒剂产生不同,中国还存在另一个重要原因:饮用水水源污染加重。陈超团队的检测显示,原水中就已出现较高浓度的有机氮——作为亚硝胺生成前体物,这将导致出厂水亚硝胺浓度的升高。

“这主要和大量的工业废水和生活污水有关,我国的污水处理率比欧美低得多。”陈超说。

报告写道:中国的地下水污染已经成为一个紧迫问题。氨氮、亚硝酸盐、硝酸盐等污染物在地下水源中十分普遍,特别是那些被农田和工业环绕的地下水源地。管网水中,亚硝酸盐的存在会发生亚硝胺化反应从而导致NDMA的生成。

“水源保护是我们的瓶颈。”陈超说。不过,研究了几十年饮用水处理的高乃云强调,现在的饮用水水质相比过去已有了质的飞跃,“现在水里能生成消毒副产物的前体物,已经大大减少。”

亚硝胺到底是否致癌?

多位医学方面的学者都有论述:长期摄入不洁,特别是亚硝胺被检出的饮用水,很可能是促成居民消化道肿瘤高发的重要致病因素。中国医学科学院基础医学研究所教授、中国疾控中心原副主任杨功焕和她的团队曾用八年时间完成了《淮河流域水环境与消化道肿瘤死亡图集》,首次证实了癌症高发与水污染的直接关系。

“这可能只是一种相关性,需要更多的研究证明。”清华大学饮用水安全研究所刘文君教授说,风险评估也是动态变化的。但他承认,低浓度的消毒副产物风险评估很难进行。“目前没有这类物质的标准评估程序。”

尽管没有直接证据表明亚硝胺化合物对人类致癌,但多个流行病学调查资料表明,人类某些癌症,如胃癌、食道癌、肝癌、结肠癌和膀胱癌等可能与亚硝胺有密切关系。其致癌机制研究显示,亚硝胺可引起食管上皮细胞相关癌基因、抑癌基因发生改变,大大促进癌变。

“动物实验结果很明确,但人群中数据不足,我们正在做相关实验。”长期研究消毒副产物健康影响的华中科技大学同济医学院教授鲁文清说。

因此,亚硝胺化合物是否会让人类致癌还需要进一步研究。

饮用水中的亚硝胺是否需要制定标准?

中国尚无饮用水亚硝胺水质标准

目前,美国的两个州和加拿大的安大略省在饮用水卫生标准中规定了亚硝胺类(NDMA)的最高浓度,但中国并未将其纳入饮水标准。

不过形势看来并不太过悲观。美国加州的指导值是10ng/L,加拿大卫生部的指导值40ng/L。而世界卫生组织(WHO)的限制则要宽得多,达100ng/L。

“按WHO的标准,我国只有少量水样超标。但如果用美国加州标准则有26%的出厂水和29%的龙头水超标。”陈超说。

相比中国饮用水中的亚硝胺类物质含量,在证据不足的情况下,大多数学者认为,“不会影响饮用水安全”。

不过,亦有不同意见。“癌症高发的致病原因很多,亚硝胺物质只是一个,但水每天都在不断地饮用,长时间富集的话可能产生一些病变。”中国科学院生态环境研究中心博士王万峰说。这或许正是美国环境保护署力争将亚硝胺纳入标准的一个主要原因。

“它像极了当年空气污染中被忽视的PM2.5。”一位课题组成员说,“建议开展更加系统的水质调查来更好地评估中国供水系统中的亚硝胺风险。”

学者:对饮用水中的亚硝胺制定标准“过于超前”

在众多学者看来,对饮用水中的亚硝胺制定标准是一个“过于超前”的目标。将一项指标纳入水质标准,需要有足够的毒理学数据和充分的科研成果。

“我们的水质标准是需要不断修改,如果这一类消毒副产物,已升级到比较重要的地位,那就要立标准。如果没有纳入,说明现在可能威胁还不大,或证据不充分。”年过八旬的清华大学环境学院教授王占生是水质标准领域的权威,他曾为提高水标准奔走多年。

和空气污染指数一样,国家环保部正在计划发布城市的水质排名。届时,环保部将按月度、季度、年度公布全国338个地级以上城市中排名前十及后十的名单。根据6月出台的《城市水环境质量排名技术规定》(征求意见稿),今后,和空气质量指数(AQI指数)对应,城市水质指数(CWQI指数)也将走进公众视野。随着人们环保意识的提升,水质标准持续提升也是自然之事。但对于当前我国自来水中检出的亚硝胺也没必要过于恐慌,还是需要理性看待。

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