郾城| 贵南| 米脂| 哈巴河| 印台| 内乡| 福建| 万宁| 多伦| 黄陵| 天门| 奉新| 苗栗| 江都| 萨迦| 尉犁| 台北县| 成都| 东沙岛| 海丰| 尼玛| 鄂伦春自治旗| 大冶| 肃南| 涟水| 花都| 深圳| 海原| 郯城| 张家口| 灵武| 浦江| 屯留| 石渠| 巍山| 伊宁市| 磐石| 林周| 贡觉| 行唐| 息县| 陇西| 费县| 武穴| 马关| 察隅| 罗田| 依安| 九江县| 普兰| 代县| 来安| 永福| 博山| 博白| 桂阳| 鄂温克族自治旗| 玉门| 舞阳| 睢县| 托里| 通州| 裕民| 台前| 衡水| 瓦房店| 孝感| 平阴| 赤水| 师宗| 营山| 京山| 邕宁| 沽源| 临颍| 普兰| 兴国| 肇源| 德阳| 桦南| 宽甸| 潜江| 平罗| 南平| 栾城| 海口| 贵港| 裕民| 榕江| 高邮| 阎良| 滦南| 永春| 金沙| 彬县| 柳江| 万源| 庄河| 乌马河| 柳城| 宿迁| 余江| 宝兴| 呈贡| 大化| 余干| 永和| 塔什库尔干| 广东| 常州| 鹰潭| 肃北| 木垒| 大同市| 拜泉| 谢家集| 微山| 衡阳县| 叶县| 景县| 五莲| 杜集| 含山| 濮阳| 田林| 云霄| 东山| 黄石| 辉县| 德惠| 河曲| 溆浦| 新竹县| 陈巴尔虎旗| 孟津| 郸城| 武陵源| 沂水| 久治| 阎良| 六合| 合肥| 石楼| 左云| 建瓯| 兴隆| 永安| 甘肃| 昆明| 莎车| 永泰| 大方| 定边| 会昌| 花莲| 静宁| 金堂| 嘉禾| 都兰| 岱山| 赞皇| 芒康| 赤水| 萧县| 临夏县| 承德县| 兴山| 黄冈| 三水| 徐闻| 宝坻| 江安| 顺昌| 新密| 大邑| 东至| 合肥| 嘉义县| 洛川| 科尔沁右翼中旗| 北海| 盂县| 米泉| 巩留| 小河| 山东| 古交| 张家港| 雅江| 建湖| 天镇| 钓鱼岛| 兴隆| 甘德| 临夏县| 肇庆| 克拉玛依| 巴楚| 沾化| 五通桥| 巴马| 大足| 当雄| 英德| 阳泉| 黔江| 临城| 福海| 成武| 咸阳| 黔江| 海晏| 定结| 临淄| 姚安| 科尔沁左翼后旗| 开鲁| 桐城| 海淀| 乌兰浩特| 淮南| 克拉玛依| 永州| 迭部| 镇坪| 北辰| 古丈| 肇源| 顺德| 锡林浩特| 长顺| 武当山| 文昌| 金堂| 喜德| 湖州| 兴业| 金山| 祥云| 江口| 宁津| 昭通| 杜尔伯特| 安远| 甘南| 嘉黎| 理塘| 新邵| 阿荣旗| 清河| 濮阳| 邳州| 鹤岗| 科尔沁左翼后旗| 大港| 乌伊岭| 虞城| 延庆| 北川| 城阳| 孝感| 靖江| 黑龙江|

2017年四川90%以上城市社区将覆盖养老服务设施

2019-10-14 20:55 来源:中国广播网

  2017年四川90%以上城市社区将覆盖养老服务设施

  PublichealthworkerssprayinsecticideamidfearsofanewcholeraoutbreakinSanaa,Yemen,June7,’srainyseasonwilllikelytriggeranotherwaveofcholera,puttingmillionsatriskinthewar-torncountry,whichisstillreelingfromoneoftheworld’sworstoutbreaksofthekillerdisease,scientistswarnedinMay.(Photo/Agencies)PublichealthworkerssprayinsecticideamidfearsofanewcholeraoutbreakinSanaa,Yemen,June7,’srainyseasonwilllikelytriggeranotherwaveofcholera,puttingmillionsatriskinthewar-torncountry,whichisstillreelingfromoneoftheworld’sworstoutbreaksofthekillerdisease,scientistswarnedinMay.(Photo/Agencies)PublichealthworkerssprayinsecticideamidfearsofanewcholeraoutbreakinSanaa,Yemen,June7,’srainyseasonwilllikelytriggeranotherwaveofcholera,puttingmillionsatriskinthewar-torncountry,whichisstillreelingfromoneoftheworld’sworstoutbreaksofthekillerdisease,scientistswarnedinMay.(Photo/Agencies)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/MaoJianjun)Dancersperformduringalightshowandfireworksdisplayheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/MaoJianjun)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/DuYang)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/DuYang)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/ShengJiapeng)Dancersperformduringalightshowandfireworksdisplayheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/MaoJianjun)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/ShengJiapeng)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/ShengJiapeng)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/DuYang)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/ZhangYong)Alightshowandfireworksdisplayisheldtowelcomeguestsattendingthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,ShandongProvince,June9,2018.(Photo:ChinaNewsService/ZhangYong)

BankstocksfallasPBOCsquasi-easingonJune1seenasbeingsilentonratesThequasi-easingofChinasmonetarypolicyonJune1hasnotencouragedinvestorstoraisetheirholdingsofstocksofcommercialbanks,emainsonfinancialregulators,,themarketsentimenttowardbankshareshasnotbrightenedinthewakeoftheJune1movebythePeoplesBankofChina,,thecentralbankannounceditwillexpandtherangeoffinancialinstrumentsthatcanbepledgedwhencommercialandinancia,whichisexpectedtogivebanksgreaterfreedomtosettheirdepositrates,couldleadtocompetitionforpeople,whenbanksvieforpeoplessavings,theytendtoacceptatrade-offaspartofthebargain-,somebanks,especiallythesmallerones,mayfacepressureofinsufficientcapitalandtightenedliquidity,sharesdroppedbelowtheirnetassetvalueorNAVonJune4,thefirsttradingdayndfinancialreformsarenottheirbutpolicymakers"especiallysupportsmallandmedium-sized"banksandencouragethemtolendtotherealeconomy,"dualtrack"interestrateeallocationandtransmissionofmonetarypolicyisacrucialcriteriontoassessamarketeconomy,"corridor"toinfluencetherelativelyfreemarketrates,withtheinterestrateonexcessreservesofbanksservingasthefloorwh,however,couldsuffermoreheadwindsthisyearwhenfinancialregs,ortocrackdownonhigh-riskshadowinstrumentssuchaswealthmanagementproducts,saidZhongZhengsheng,directorofmacroeconomicanalysisatCEBMGroup,,theInternationalMonetaryFundsFirstDeputyManagingDirectorDavidLiptonissuedastatementthatChinashouldtakeadvantageofthecurrentgrowthandreformmomentum,especiallywhenthefinancialsectorreformshavemadestrongprogressrecently,antity-based,andthistransitionshouldbecontinued,justas"tofixtheroofwhilethesunisshining".BicyclecartsandbamboobirdcagesQianmenDashilar2015.(PhotobyBruceConnolly/)Inthe1990s,whiletravelingthroughBeijingtowardsouthwestChinaIwouldalwaysspendafewdaysincreasingmyknowledgeofthecity’“Qianmen-Dashilar”appearedinmydiarynotesfromthosedays—anareaIdiscoveredtobebustlingwithstreetlifewhileretainingmuchofthecapital,acafeoverlookingthemassiveZhengyangmenGatecomplex,Iatebreakfast,satatthewindowanddreamed—dreamsofBeijing,theareaIwasinanditsmanyfacetsandepisodeswithinthecity’,butthelocalnameWestHeyanStreet,orWestRiverbankStreet,(ArrowTower)isonthecity’,“FrontGate”oftheMingDynastywallsseparatingtheimperialgrandeurofthenorthfromthevibrant,,re,(PhotobyBruceConnolly/)ItwassouthalongthatroutetheemperorswouldbecarriedtowardstheTempleofHeavenforritualceremoniesbutitwasalsothroughtheJianloupassagewaywhereofficialsandtheirfamilieswouldemergeintothebustlingareasofQianmenandDashilar,ascommerceandentertainmentwektoweroftheformerZhengyangmenRailwayStation—theoriginal“Beijingstation”,,andanelemen,(PhotobyBruceConnolly/)Nextdoor,onQianmenEastStreet,theBeijingPlanningExhib,andbeamazedatthehaphazardlenortharoundDongsi,XisiandZhonggulou,’snarrowestalley,Qianshior“moneymarket”Hutong,,with26mintsproducingcoppercoinsforthecity’,particularlyitswesternside,washometoseveralofChina’searlyfinancialhouses—indeed,walkalongWestHeyanStreetandthereareseverallargeEuropeanclassica,,,atthattime,fascinatingdiscoveriesthroughareasofmainlylow-riseresidentialandcommercialbuildings,includingthe“UndergroundCity”—amazeofanti-nuclearevacuationtunnelsthatwereopentovisitorsatthattime,(PhotobyBruceConnolly/)How,itsfamed“TimeHonoredBrands”—shopsrenownedfortheirhats,silks,foodstuffs,’sfirstcinema,Daguanlou,,featuringasculptureofthefatherofChinesecinema,dong,,itsprestige,runningsouthfromQianmentoZhushikouWestStreet,datesfrom2008andwasmodified,DashilarWestStreetwaspedestrianizedintoacommerciallaneandhomeforlocalprodu(PhotobyBruceConnolly/)Simplyleavingthemainbywaycanleadintoalleyslinedwi—therewouldbemanycol,DashilarisbeingseenbytravelguideslikeLonelyPlanetasbecominga”hip”’slocal-styleArtDecobuildingsbecomingcentersforcontemporaryart,erseasbackpackersandtravelers,peoplewhoprefertospendtimeinlocalareasfilleoundingrooftops,whilelookingdownonthevarietyofdomesticandWester’,studentsoftengohomebybicyclecarts,,Tan’erleadstonorth-runningYanshouStreet,shistory,andforaphotographer,aplacetoca(PhotobyBruceConnolly/)TodaytheQianmen-DashilararearemainsasasmallenclavewithinthegreaterareaofBeijing,butitsmanysurviving,twisting,mindedmemoreofavillagewithinacity,ramswhileschoolchildrenplayedont,—thepeoplewhomakethisoneofthemostfascinatingpartsofoldBeijingtoexplore,andwhere(PhotobyBruceConnolly/)QianmenDajieandJianlouTower2015.(PhotobyBruceConnolly/)Remindersofthepast-formerhomesandformerfactorybuildingsineasternQianmen2015.(PhotobyBruceConnolly/)RooftopsandtraditionalbuildingsofDashilarandQianmen2015.(PhotobyBruceConnolly/)Schoolisout!TanerHutong2015.(PhotobyBruceConnolly/)TheschoolrunTanerHutongDashilar2015.(PhotobyBruceConnolly/)ThesecuritymanandvistortoDashilar2015.(PhotobyBruceConnolly/)TraditionalfoodsinDashilar2015.(PhotobyBruceConnolly/)

  TheSoyuzMS-09spacecra,AlexanderGerstofGermanyandcosmonautSergeyProkopyevofRussiablastsofftotheInternationalSpaceStation(ISS)fromthelaunchpadattheBaikonurCosmodrome,Kazakhstan,June6,2018.(Photo/Agencies)TheSoyuzMS-09spacecra,AlexanderGerstofGermanyandcosmonautSergeyProkopyevofRussiablastsofftotheInternationalSpaceStation(ISS)fromthelaunchpadattheBaikonurCosmodrome,Kazakhstan,June6,2018.(Photo/Agencies)TheSoyuzMS-09spacecra,AlexanderGerstofGermanyandcosmonautSergeyProkopyevofRussiablastsofftotheInternationalSpaceStation(ISS)fromthelaunchpadattheBaikonurCosmodrome,Kazakhstan,June6,2018.(Photo/Agencies)TheSoyuzMS-09spacecra,AlexanderGerstofGermanyandcosmonautSergeyProkopyevofRussiablastsofftotheInternationalSpaceStation(ISS)fromthelaunchpadattheBaikonurCosmodrome,Kazakhstan,June6,2018.(Photo/Agencies)Thislow-angleself-portraitofNASAsCuriosityMarsrovershowsthevehicleatthesitefromwhichitreacheddowntodrillintoarocktargetcalled"Buckskin"onlowerMountSharp.(Photo/Agencies)NASA’sCuriosityroverhasfoundnewevidencepreservedinrocksonMarsthatsuggeststheplanetcouldhavesupportedancientlife,aswellasnewevidenceintheMart,thesefindingsareagoodsignforfuturemissionsexploringtheplanet’“tough”organicmoleculesinthree-billion-year-oldsedimentaryrocksnearthesurface,aswellasseasonalvariationsinthelevelsofm,andalsomayincludeoxygen,,organicmoleculesalsocanbecreatedbynon-biologicalprocessesandarenotnecessarilyindicatorsoflife.“Withthesenewfindings,Marsistellingustostaythecourseandkeepsearchingforevidenceoflife,”saidThomasZurbuchen,associateadministratorfortheScienceMissionDirectorateatNASAHeadquarters,inWashington.“I’mconfidentthatourongoingandplannedmissionswillunlockevenmorebreathtakingdiscoveriesontheRedPlanet.”Thisself-portraitofNASAsCuriosityMarsroverobtainedFebruary4,2018showsthevehicleonVeraRubinRidge,whichitsbeeninvestigatingforthepastseveralmonths,directlybehindtheroveristhestartofaclaywherenorthisontheleftandwestisontheright,withGaleCratersrimonthehorizonofbothedges.-’sCuriosityroverhasfoundnewevidencepreservedinrocksonMarsthatsuggeststheplanetcouldhavesupportedancientlife,aswellasnewevidenceintheMart,thesefindingsareagoodsignforfuturemissionsexploringtheplanet’“tough”organicmoleculesinthree-billion-year-oldsedimentaryrocksnearthesurface,aswellasseasonalvariationsinthelevelsofm,andalsomayincludeoxygen,,organicmoleculesalsocanbecreatedbynon-biologicalprocessesandarenotnecessarilyindicatorsoflife.“Withthesenewfindings,Marsistellingustostaythecourseandkeepsearchingforevidenceoflife,”saidThomasZurbuchen,associateadministratorfortheScienceMissionDirectorateatNASAHeadquarters,inWashington.“I’mconfidentthatourongoingandplannedmissionswillunlockevenmorebreathtakingdiscoveriesontheRedPlanet.”

  (CNS),astate-levelnewsagencysponsoredandestablishedbyChinesejournalistsandrenownedoverseasChineseexpertsonOctober1,(),,,includingin-depthcoverage,featurestoriesandvisualcontent,withtopicssuchascurrentevents,art,lifestyle,(CNS)isnotonlyastate-levelnewsagencyspreadingnewsworldwide,butalsoaninternationalnewsagencywithsubscribersinTaiwan,HongKongandMacao,,formervicechairmanoftheStandingCommitteeoftheNationalPeoplesCongress,,therewereothermajorsponsorsandbuilders,suchasJinZhonghua,HuYuzhi,,awell-knownexpertoninternationalissues,,CNSwastheInternationalNewsService,,adatabaseofinforma(includingwritings,photosandspecialarticles)andamodernmethodofreporting(mainlythroughinternet,videosandSMS)providedtooverse,,HongKongandMacao,aswellasbranchesorreportstationsinTokyo,Bangkok,KualaLumpur,NewYork,Washington,LosAngeles,SanFrancisco,Vancouver,London,Paris,,andnewsreleasecentershavebeenestablishedinBeijing,,multi-levelandmulti-functionnewsreleasesystem,CNSprovidesallkindsofnewsandinformation,’,,1999,theheadquartersofCNSlauncheditsofficialwebsite,namedChinanews().ChinanewsisconsideredoneofChina’smostimportantonlinenewssources.Aworldwidedesigncampaignaimedatfindingaproperemojitorepre"theworldsfastest-developinglanguage"tohelpbetterspreadearthquakeinformationandmakeadifferenceduringanemergency."Althoughthereisanemojiforothernaturaldisastersandweatherevents,thereisnouniversalemojiforearthquakesandgroundshaking,",togetherwithsevenotherresearchersfromtheUnitedStates,FranceandCostaRica,,tsbasedonthecriteria"evocative,simple,universalanddistinctive."TheshortlistwillbepostedonTwittersothatnetizenscanvoteforawinner,andaproposalwillbemadetoaddthewinnertotheunicodeemojiselectiongroup."Havingaconcise,internationally-universalwayofdescribinganearthquakethatbreakslanguagebarrierscouldhaveimportantimplicationsformitigatingtheirhazards,andmaybeevensavinglives,"mergencysituations,butemojiscouldbeusedasseismometersonsocialmedia,Hickssaid.

(ECNS)-ChinaaimstobuildinfrastructureforindustrialInternetandindustrialsystemsbytheendof2020,accordingtotheMinistryofIndustryandInformationTechnology(MIIT),000industrialenterpriseswillintegratecloudservicesoverathree-yearperiodandmorethan300,000industrialappswillbecreated,accordingtotheministrys"ActionPlanfortheDevelopmentofIndustrialInternet(2018-2020)"ucture,establishinganindustrialInternetnameadministrationsystem,achievingbreakthroughsincoretechnologiesstandards,,chiefengineerattheChinaAcademyofInformationandCommunicationsTechnology(CAICT),saidi,foundedwiththesupportoftheMIITandCAICT,hasintroducedaseriesofresearchresultsincoreareas,inpacewithinternationalprogress,outforthe“MadeinChina2025”strategy,,theStateCouncilapprovedguidelinesondevelopingtheindustrialInternet,promisingstreamlinedadministrationandfiscalsupport.

  ,2017showstwilightthroughtheSeventeenArchBridgeintheSummerPalaceinBeijing,capitalofChina.(Xinhua/LiuXianguo)China,700activitieswillbeheldacrossChinatocelebratethisyearsculturalandnaturalheritageday,,whichwasestablishedtosafegstakealookat20culturalheritagesitesinChina,,originallynamedQingyiYuan,ortheGardenofClearRipples,wasanimperialgardenconstructedin1750byEmperorQianlonginabidtocelebratehismother,emperorsandempressesspenttheirleisuretimethere,eselandscapegardendesign,,capitalofsouthwestChinasTibetAutonomousRegion,,2018,togreettheSpringFestivalandTibetanNewYear.(Xinhua/Chogo),LhasaThePotalaPalace,winterpalaceoftheDalaiLama,hassymbolizedTibetanBuddhismanditscen,madeupoftheWhiteandRedPalaceswiththeirancillarybuildings,isbuiltonRedMountaininthecenterofLhasaValley,atanaltitudeof3,,JokhangTempleMonasteryandNorbulingkawereaddedtothelistrespectivelyin1994,,2018showsthesnowsceneryofWestLakeinHangzhou,eastChinaZhejiangProvince,,2018.(Xinhua/HuangZongzhi),,WestLakeCulturalLandscapeofHangzhouhasinspiredfamouspoets,,pagodas,pavilions,gardensandornamentaltrees,,2018showsseaofcloudsafterrainfallatHuangyaguansectionoftheGreatWallinTianjin,northChina.(Xinhua/YangYushan),theGreatWallwindsupanddownacrossdeserts,grasslands,mountainsandplateaus,,horsetracks,watchtowers,andsheltersonthewall,,000years,,itisstilloneofthemostappealingattractionsallaroundt,oneofthegreatestwondersoftheworld,,northwestChinasGansuProvince,,2016.(Photo/Xinhua),Gansuprovince,theMogaocaves,alsoknownastheThousand-BuddhaCaves,aretheworldslargest,mostrichlyendowed,,atthecrossroadsoftradeaswellasreligious,,thecarvingofthecavesstartedin366ADandcontinuedforabout1,,housingabout45,000squaremetersofmuralsandmorethan2,000paintedsculptures,,wi(Photo/Xinhua)sYuanDynastyinChina,slegendarycapitalcity,designedbytheMongolrulersChineseadvisor,LiuBingzhong,,includingtemples,palaces,tombs,nomadicencampmentsandtheTiefangangCanal,,,:/FengJun):anImperialSacrificialAltarinBeijingLocatedinthesouthernpartofBeijing,theTempleofHeavenisamagnificentcomplexoffirs,andisthelargestoneinBeijingamongseveralroyalaltarstoHeaven,Earth,theSun,,SoutheastChinasFujianprovince,onDec9,2016.(Photo:ChinaNewsService/WangDongming)e15thand20thcenturiesover120kilometersinthesouth-westofFujianprovince,irfunctionexe,,efilm,resembling"scarfs"and"dresses",aspartoftheirrestorationintheEmperorQinshihuangsMausoleumSiteMuseuminXian,Shaanxiprovince,Feb23,2015.(Photo/CFP)ntainingterracottawarriorsandhorsesarelocatedinLintongcounty,nearXi’ancity,,,themausoleumislaidoutinlinewiththedimensionsofXianyang,,,,ridianGate(WuMen)ofthePalaceMuseuminBeijing,April17,2018.(Photo:ChinaNewsService/DuYang)ForbiddenCity,locatedinthecenterofBeijing,,,,(anareaenclosedbyfourpoles).In1924,theimperialfamilyoftheQingDynastywasremovedfromtheForbiddenCity,age,nearMountHuangshan,Anhuiprovince,inMay.(Photo:ChinaDaily/WangHao),HuangshancityinsouthAnhuiprovince,thetwotraditionalvillagesXidiandHongcunarearchitecturalcomplexes,,landscape,architecturalform,decorationandconstructiontechniquesallretaint,northChinasShanxiProvince,April22,,listedasaUNESCOWorldCulturalHeritagesitein2001,willwitnessatourismpeakastheMayDayholidayiscoming.(Photo:Xinhua/YanYan),some16kmwestofDatongcity,Shanxiprovince,theYungangGrottoeswerebuiltagainstthemountainandextendaboutonekm(),000statueswithinacarvedareaof18,000squaremeters,YungangGrottoesrepresenttheoutstandin,withtheirstrictunityoflayoutanddesign,coPoliticalPartyForumvisitLiuyuanorLingeringGardeninSuzhou,eastChinasJiangsuProvince,April22,2013.(Xinhua/ShenPeng),whichseekstorecreateminiaturenaturallandscapes,isnotillustratedanybetterthanintheninegardensinthehistoriccityofSuzhou,’,2017showstheviewofChengdesummerresortinnorthChinasHebeiProvince.(Xinhua/LiuMancang),ChengdeIntermsofthegenerallayout,architecturalstyles,constructiontechniques,decorationdetailsandgardenlandscape,theMountainResort,avastcomplexofpalacesandadministrativeandceremonialbuildingsbuiltbetween1703and1792,representsthebroadexchangeandconvergencebetweenHancultureandtheethniccultures-Confucianism,BuddhismandTaoism-andthearchitecturalstylesbetweenChina,theMountainResorthastemplesofmanyarchitecturalstylesandimperialgardensblendeffortlesslyintoalandscapeoflakes,,,centralChinasHenanProvince,April17,(Xinhua/ZhuXiang)e(618-907).Located13kmsouthofLuoyang,Henanprovince,theLongmenGrottoesareconcentratedontheeastandwestcliffsoftheYishuiRiver,,duringtheNorthernWeiDynasty,Grottoes,liketheTwentyGemsofLongmenCalligraphyandZhuSuiliang’sstonetablets,,madein641inhonorofthemotherofthefourthsonofEmperorTaizong,,,LushanMountainisoneofthemostrenownedmountainsandtourismresortsinthecountry.(Photo/ShanghaiDaily),LushanMountainisoneofChina’,whichwasinscribedontheWorldHeritageListin1996,i,LushanisthebirthplaceofChineselandscapepoetry,plus,thefamousLushanPlenumrepresentsitsroleinChina’,,southwestChinasYunnanProvince,,SCOin1997.(Photo:Xinhua/YangZongyou),lyingontheLijiangplainatanelevationof2,400metersinsouthwestYunnanprovinceofChina,alandstrategifelementsfromseveralcultures,anditsancientwater-supplysy,WudangMountain,alsoknownasTaiheMountain,isbothafamousscenicspotandaholysiteofTaoism,Chinasindigenousreligion.(Photo/)anjiangkouincentralHubeiprovince,theWudangMountainsarehometoafamouscomplexofancientpalaces,periodofnearly1,,anannualeventputonbythespecialadministrativeregionsgovernment,sonSundaynight,(Photo:Xinhua/ZhangJinjia)’straditionalChinesedesign,itstandswitnesst’smissionaryroleintheFarEastwhilealso,formingthemostuniqueblendofculturalheritageexistinginChina’,,clairaudienceandtheJadeEmperorintheDazuRockCarvingsinChongqingmunicipality.(Photo/TheofficialWechataccountofDazuRockCarvings),,’,50,000statuesand100,000inscribedwithChinesecharacter,1999.

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  PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)Asthe2018FIFAWorldCupapproaches,letsseehowgiantpandasinSWChinasSichuanarepreparingforthebigevent!PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)

  ChildrenplayonasquareinQingdao,eastChinasShandongProvince,June3,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/ZhangCheng)StudentsofamiddleschoolplayfootballinQingdao,eastChinasShandongProvince,June4,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/LiZiheng)AmangoeswindsurferinginQingdao,eastChinasShandongProvince,May4,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/ZhangCheng)CitizensposeforphotoattheOlympicParkinQingdao,eastChinasShandongProvince,June4,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/LiZiheng)ChildrenpracticerollerskatinginQingdao,eastChinasShandongProvince,June4,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/LiZiheng)AmandoesexercisesataparkinQingdao,eastChinasShandongProvince,June3,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/JiangKehong)AsailboatisseeninthewaterinQingdao,eastChinasShandongProvince,June4,(SCO)SummitisscheduledforJune9to10inQingdao.(Xinhua/YinGang)

  Arobotpatrolsthemediacenterofthe18thShanghaiCooperationOrganizationSummitonThursday.(Photo:LiHao/GT)WiththeapproachoftheShanghaiCooperationOrganization(SCO)QingdaoSummit,volunteersprovideassistanceforin,“66”,securityrobot“Haihai”anddeliveryrobot“DianXiaoer.”Securityrobot“Haihai”cancarryout24-hourautonhemediacenterforthe18thShanghaiCooperationOrganizationSummitinQingdao,EastChinasShandongProvince,onJune7,2018.(Photo:LiHao/GT)Volunteersworkatthemediacenterreceptiondeskofthe18thShanghaiCooperationOrganizationSummitinQingdao,EastChinasShandongProvince,onJune7,2018.(Photo:LiHao/GT)Volunteersstandatattentioninthemediacenterforthe18thShanghaiCooperationOrganizationSummitinQingdao,EastChinasShandongProvince,onJune7,2018.(Photo:LiHao/GT)JournalistsprepareinthemediacenteroftheShanghaiCooperationOrganizationQingdaoSummitinQingdao,EastChinasShandongProvince,onJune7,2018.(Photo:LiHao/GT)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)Asthe2018FIFAWorldCupapproaches,letsseehowgiantpandasinSWChinasSichuanarepreparingforthebigevent!PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)

  

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如何从太极拳之诡,看待“喷水发动机”这件事?

2019-10-14 09:53:40
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来源:童济仁的汽车评论 作者:吴邪
FormerprofessionalfootballstarDavidBeckhamplayscuju,knownastheoriginofmodernfootball,attheBengbuAncientBuildingsExpoParkaheadofthe2018G-EXPOGlobalTopSummitinBengbuCity,EastChina’sAnhuiProvince,June6,2018.(Photo:ChinaNewsService/ZhongXin)FormerprofessionalfootballstarDavidBeckhamplayscuju,knownastheoriginofmodernfootball,attheBengbuAncientBuildingsExpoParkaheadofthe2018G-EXPOGlobalTopSummitinBengbuCity,EastChina’sAnhuiProvince,June6,2018.(Photo:ChinaNewsService/ZhongXin)

这要从当年骗惨全中国的“水变油”事件说起。从1984年开始,到1996年为止,王洪成仅靠“水变油”的荒谬把戏,横行了十余年之久,期间不乏学者、政界和媒体为之背书,裹挟其中。科学的荒漠是可怖的,“伪科学”成了摇钱树,这是一个时代的悲哀。

既然“水不可以变成油”,那么今天要聊的“喷水发动机”又是怎么一回事?且听我慢慢道来。

蒙蔽全国的“水变油”事件 

2019-10-14,《经济日报》曾刊登一篇4000余字的文章,称赞王洪成的“水变油”技术,甚至有意将其归为中国“第五大发明”。在此之前,《人民日报》甚至明确登出数据,表示“水变油”技术的节油率达到了44.84%。“水变油”后来席卷全国,与媒体的推波助澜不无关系。

其实,站在今天的立场上,“水变油”明显就是无稽之谈,也是赤裸裸的伪科学。难道就因为水是由氢氧素构成的,就可以做燃料吗?有一点化学常识的,应该都不会轻易相信这个骗局。王洪成所声称的“膨化燃料”,其实也就是大跃进时代燃油掺水的变种,本是用来“放卫星”的自我迷幻,其中加入的肥皂乳化剂,对缸体腐蚀尤为严重。

之所以提到“水变油”这件事,原本是想作为“喷水发动机”的一个过渡。巧合的是,网络上最近爆出了“太极与格斗术擂台PK”的热点新闻,传统武术被质疑为“骗术”的舆论甚嚣尘上。姑且不加入“武术真伪”的辩论赛,其实只想提一点,某些“武术伪宗师”的招摇撞骗,又何尝不是“水变油”骗局的翻版,再联想到曾经的“气功热”,没有科学的荒漠着实是可怖的。

为了减排,船用发动机选择“喷水” 

首先需要明确一个前提,“水的确不能变成油”,向发动机缸内喷水,绝不是把水当做燃料来使用的。如果“故纸堆”,在历史上也曾出现过发动机喷水的“实际案例”。

诸如,二战时期,各国空军通过缸内喷水的手段压榨出发动机更多的动力输出;到了上世纪60年代,美国通用就曾在名为Oldsmobile品牌的V8发动机中采用这一技术,但喷入的其实是水与酒精的混合物;即使在今天的改装圈,“进气道喷水”也是一招常见的改装大法,改装派的发烧友并不陌生。

船用发动机,也常常采用“缸内喷水”的办法以实现氮氧化物减排的效果。以瓦锡兰NSD公司开发的船用柴油机为例,通过特殊的结构设计,可以向发动机的燃烧室内直接喷水。柴油机的一大污染物就是“氮氧化物”,而氮氧化物生成的必要条件之一是高温,向缸内喷水,可以利用蒸发吸热的原理达到降温的效果,从而抑制氮氧化物的生成,降低比例为50%至60%。

宝马M4的水喷射系统  

真正令很多人认可“水喷射系统”的,还是要追溯于宝马曾在2015年2月份推出的改装版M4。这款M4主要应用于MotoGP赛事的安全车。发动机的特别之处在于加装了一套水喷射系统,但值得注意的是,水雾喷嘴仍然布置在进气歧管的位置。当涡轮吸入了高压空气之后,进气气流途经进气歧管,水雾顺势喷出并高温气化,由此带走部分热量,以帮助进气气流降温。

进气气流降温有啥好处呢?简单理解,“热胀冷缩”,类似于中冷器,在降温之后,空气的密度增大,可吸入的空气体积也就更多,燃烧也就更充分。具体来讲,主要有以下两个方面的优势。

其一,消除爆震。爆震其实就是“不可控的燃烧”,在高温高压的情况下,油气混合物意外自燃,对经济性和动力性造成负面影响。喷水的核心要义仍然是“降温”,温度降低之后,在一定程度上抑制了爆震。一方面,我们可以将点火时间适当提前,以提高动力输出;另一方面,我们也可以优先使用辛烷值标号更低的汽油。

其二,提高压缩比。压缩比的直接制约条件就是爆震影响,所以说,当爆震被抑制之后,压缩比也可以适当“再提高”。而高压缩比,意味着更高的动力输出,也意味着油气混合物的燃烧将会更加充分。即使落脚到减排层面上,类似于上文提到的“船用发动机”,氮氧化物的排放也会得到一定程度的改观。

红圈标示为水雾喷射

实验室中的兰金循环 

这个时候,有人就会发出疑问,既然“喷水”这么好,这样的发动机为什么不尽快量产,并投向市场呢?最大的拦路虎是“成本”,也包括一些喷水的弊端:1、加入喷水设备,首先需要再设计一个水箱,而且,所喷入的水也绝不是从自来水管上接来的,需要纯净水。也有方案提出与空调冷凝水形成一个循环,可以去尝试;2、水与氮氧化物仍不可避免地会生成酸,对缸体有腐蚀之嫌。

然而,这并不是说,“喷水发动机”的研发就没有实际意义了。从科研的层面来看,围绕“喷水”技术,仍有很多前沿性的研发成果。以基于兰金循环的二氧化碳回收动力系统为例,参考于如下这张图:

基于兰金循环的二氧化碳回收动力系统

E表示取消了扫气过程的二冲程往复式发动机,功热转换原理依据于兰金循环。在这套系统中,助燃剂不是空气,而是纯氧(最初为液态),在进入E之前,势必要气化吸热,同时可以将最后排放出的二氧化碳“凝华”为干冰。而干冰本身就是可以“卖钱”的,比如注入碳酸饮料,用于人造雨或者舞台表演等。

FH是给水加热器,也就是说,在E中反应之后的“热产物”(二氧化碳和水),将会流过FH并加热其中的水。重点提到的“喷水”功能,就是由FH通过途径3向E中喷射实现的,这样做的优势还是在于降温,因为纯氧与燃料的反应速度很快,需要降温来把反应速度“压下来”、“控制住”。

FP作为给水泵,可以把“热产物”中分离出的水,反向供给到FH中,实现一个有效的循环。这套系统暂时还是处于实验室层面的研究设想,如果走向量产,仍是一条很长的路。但是,起码可以证明,发动机技术并没有“陨落”,其实还有很多方面可以深入研究。

兰金循环P-V图(二冲程)?

反思:

写这篇文章有一个初衷:节能与减排已是大势所趋,在这样的背景下,以电动化为主的新能源成为所关注的热点。但随之而来的,也有对于“电动化是否真正环保”的尖锐质疑,毕竟,如果解决不了“电怎么来的”这一源头问题,“电动即环保”很难服众。

我一直坚信,汽车的未来没有“一家独大”,针对动力系统,也应该多管齐下,电动车可以搞,氢燃料电池也不能落后,但发动机技术亦不可就此“荒废”。有人说,电动化是一种弯道超车,足以帮助中国跳过发动机技术的百年壁垒,然而,这样真的好吗?国内发动机技术的研发就要“浅尝辄止”了吗?

预计2025年,发动机的效率将会达到50%,那个时候,中国准备好了吗?在技术的突围战中,一个都不能少。

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