德令哈| 长汀| 阿荣旗| 磴口| 开江| 沙湾| 冠县| 特克斯| 姜堰| 容城| 茶陵| 平和| 巴青| 栾川| 景谷| 河源| 涟水| 清远| 梅里斯| 钓鱼岛| 房县| 阜康| 兴城| 石河子| 台湾| 屏山| 乌兰浩特| 郧西| 金坛| 乌恰| 富顺| 湖北| 涞水| 略阳| 库尔勒| 屯留| 拜城| 扎鲁特旗| 敦煌| 黄陵| 贺州| 西藏| 泰安| 隆回| 古县| 上甘岭| 新城子| 荣县| 化德| 弥勒| 乌拉特前旗| 芜湖县| 泉州| 顺昌| 云林| 岱山| 隆安| 苏尼特左旗| 临洮| 衡南| 开阳| 李沧| 龙南| 岷县| 加格达奇| 龙山| 富锦| 宜阳| 容城| 调兵山| 武定| 淮阴| 芜湖市| 盘县| 鹤壁| 开封县| 镇平| 北碚| 克拉玛依| 安溪| 交城| 马鞍山| 元坝| 郧西| 西山| 五大连池| 白银| 镇坪| 秦安| 公主岭| 广河| 银川| 平遥| 白河| 神农顶| 彭阳| 德安| 双辽| 班玛| 高安| 南溪| 昔阳| 鄂州| 高青| 来凤| 佳木斯| 遂溪| 若羌| 陇县| 隆化| 陇川| 光泽| 阿拉善右旗| 惠阳| 长顺| 齐齐哈尔| 罗山| 崇明| 天镇| 惠东| 西山| 绩溪| 云浮| 开平| 麻山| 宜兴| 贞丰| 得荣| 陈仓| 嘉义县| 寿宁| 宣城| 沿滩| 正阳| 射洪| 内江| 莲花| 高邑| 新泰| 滕州| 梨树| 兴安| 大同县| 砚山| 鄂温克族自治旗| 大厂| 怀安| 上思| 阿拉善左旗| 辛集| 福州| 乐东| 祁连| 秦皇岛| 铁岭县| 巴楚| 蔡甸| 扬中| 隰县| 色达| 井冈山| 金溪| 白水| 綦江| 贡觉| 睢县| 昌乐| 绍兴市| 江源| 原平| 户县| 通化市| 龙岩| 乌马河| 阜新市| 澜沧| 密山| 洮南| 神农顶| 宜州| 沿河| 五通桥| 博山| 桐梓| 陆川| 东海| 西华| 灵台| 巴彦| 岷县| 班玛| 呼图壁| 宝坻| 平武| 潮州| 临夏县| 张湾镇| 洪江| 开化| 曲阳| 西吉| 新城子| 拜泉| 滨州| 宣化区| 白云矿| 博山| 诏安| 永宁| 青川| 筠连| 宣化县| 文登| 杭锦旗| 鲅鱼圈| 莎车| 榆中| 宽城| 武邑| 滨海| 怀远| 苏州| 兴安| 彝良| 丹巴| 朝天| 哈巴河| 嘉黎| 公主岭| 金州| 长兴| 望城| 平湖| 会东| 漳县| 马鞍山| 隆尧| 本溪市| 维西| 惠水| 咸丰| 浮梁| 肃南| 巴中| 鸡西| 康乐| 汝南| 铁岭县| 资源| 武当山| 尤溪| 邕宁| 边坝| 汉南| 高安| 德保| 温县| 天池| 淳化| 繁峙| 芜湖县| 内蒙古| 深圳|

2019-10-18 17:48 来源:中国前沿资讯网

  

  FormerprofessionalfootballstarDavidBeckhamplayscuju,knownastheoriginofmodernfootball,attheBengbuAncientBuildingsExpoParkaheadofthe2018G-EXPOGlobalTopSummitinBengbuCity,EastChina’sAnhuiProvince,June6,2018.(Photo:ChinaNewsService/ZhongXin)FormerprofessionalfootballstarDavidBeckhamplayscuju,knownastheoriginofmodernfootball,attheBengbuAncientBuildingsExpoParkaheadofthe2018G-EXPOGlobalTopSummitinBengbuCity,EastChina’sAnhuiProvince,June6,2018.(Photo:ChinaNewsService/ZhongXin)SeedlingsofanewricestraindevelopedbyChinas"fatherofhybridrice"YuanLongpinghavejustbeenplantedinfieldsreclaimedfromdesertedfishpondsonChinaseasternseashore,wherehighsalinityhadmadethesoilinfertile."Wecross-pollinatedwildricestrainswithcultivatedriceplantstodevelopthehybridrice,",deputydirectorofQingdaossaline-alkalinetolerantriceresearchanddevelopmentcenter,whichcollaborateswithYuansteam,thefieldplantingofthehybridricewillprovideademonstrationonthefeasib,eastChinasShandongProvince,areexpectedtobetreatedsothatthesoilsalinityratecanbekeptunder6partsper1,0steamhasdevelopedasetofnewtechniquetoensurethehybridrice,alkalinesoilwasnotcontaminatedbyheavymetalpollution,asoftenseeninChina,theteamhadplantedthericeinsixothertestingbasesincludingKashgarPrefectureofXinjiangUygurAutonomousRegionandShaanxiProvinceinnorthwestChina,ZhejiangandJiangsuprovi,theprojectwillbeexpandedtocoveratotalof6,666hectaresoftestfieldsintheregion,,whichis10percentoftheworld,theywerege,88,,basedonaconservativeestimate,thecroplandscouldexpectayieldof30billionkgayear,sriceyieldsandcontributedtoensuringthecountrysfoodsecurity,sHebeiProvincelastyear,sexportofsaline-alkalinetolerantriceandthetechniquehasbeeneyedasawaytotackletheworldsteamwasinvitedtomakeatrialplantationofthesaline-alkalinetolerantriceinexperimentalfieldsinDubaiinJanuary,cultureOrganizationoftheUnitedNations,thenumberofpeoplefacingfoodinsecuritygloballyhasreached124million,comparedto108millionayearbefore.

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.”ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)

  AteacherteachesstudentsbasicperformingactionsofChinesedramaataprimaryschoolinNeiqiuCounty,northChinasHebeiProvince,June8,ritingtraditionalChineseculture.(Xinhua/ZhuXudong)AteacherteachesstudentsbasicperformingactionsofChinesedramaataprimaryschoolinNeiqiuCounty,northChinasHebeiProvince,June8,ritingtraditionalChineseculture.(Xinhua/ZhuXudong)StudentspracticebasicperformingactionsofChinesedramaataprimaryschoolinNeiqiuCounty,northChinasHebeiProvince,June8,ritingtraditionalChineseculture.(Xinhua/ZhuXudong)StudentspracticebasicperformingactionsofChinesedramaataprimaryschoolinNeiqiuCounty,northChinasHebeiProvince,June8,ritingtraditionalChineseculture.(Xinhua/ZhuXudong)AteacherteachesstudentsbasicperformingactionsofChinesedramaataprimaryschoolinNeiqiuCounty,northChinasHebeiProvince,June8,ritingtraditionalChineseculture.(Xinhua/ZhuXudong)PhototakenonJune6,2018showscustomsenforcementofficersinIstanbul’sPendikporthavecaughtundocumentedmigrants,wrappedinaluminumfoiltohidefromx-raydetectors,onan18-wheeltruckenroutetoItaly.(Photo/Agencies)PhototakenonJune6,2018showscustomsenforcementofficersinIstanbul’sPendikporthavecaughtundocumentedmigrants,wrappedinaluminumfoiltohidefromx-raydetectors,onan18-wheeltruckenroutetoItaly.(Photo/Agencies)

  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)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)ChenZhe,aresearcherwiththeNanjingInstituteofGeologyandPaleontologyattheChineseAcademyofSciences,showstheearliestknownfootprintsleftbyananimalonearth,whichdatebackatleast541millionyears,inNanjing,JiangsuProvince,June7,StatesfoundthetracksintheThreeGorgesareaandpublishedtheirreportintheUSjournalScienceAdvances.(Photo:ChinaNewsService/YangBo)

ThaipolicesergeantTanitBussabongdirectstrafficwearingacostumewhereheappearstorideaT-rexdinosauroutsideaschoolinNakhonNayokonJune4,,whohasaround20differentoutfitsincludingMinnieMouseandabearforhistrafficdutyoutsidethekindergarten,saidhisprehistoricuniformisteachingkidsroadsafetyandconvincingparentstoobeytrafficlaws.(Photo/Agencies)ThaipolicesergeantTanitBussabongdirectstrafficwearingacostumewhereheappearstorideaT-rexdinosauroutsideaschoolinNakhonNayokonJune4,,whohasaround20differentoutfitsincludingMinnieMouseandabearforhistrafficdutyoutsidethekindergarten,saidhisprehistoricuniformisteachingkidsroadsafetyandconvincingparentstoobeytrafficlaws.(Photo/Agencies)ThaipolicesergeantTanitBussabongdirectstrafficwearingacostumewhereheappearstorideaT-rexdinosauroutsideaschoolinNakhonNayokonJune4,,whohasaround20differentoutfitsincludingMinnieMouseandabearforhistrafficdutyoutsidethekindergarten,saidhisprehistoricuniformisteachingkidsroadsafetyandconvincingparentstoobeytrafficlaws.(Photo/Agencies)ThaipolicesergeantTanitBussabongdirectstrafficwearingacostumewhereheappearstorideaT-rexdinosauroutsideaschoolinNakhonNayokonJune4,,whohasaround20differentoutfitsincludingMinnieMouseandabearforhistrafficdutyoutsidethekindergarten,saidhisprehistoricuniformisteachingkidsroadsafetyandconvincingparentstoobeytrafficlaws.(Photo/Agencies)

  PhototakenonJune7,2018showsexhibitsattheAfricanArtExhibitioninsouthwestChina(Xinhua/WangQuanchao)AcuratorintroducestheAfricanArtExhibitionheldinsouthwestChinasChongqing,June7,(Xinhua/WangQuanchao)JournaliststakephotosattheAfricanArtExhibitioninsouthwestChinasChongqing,June7,(Xinhua/WangQuanchao)PhototakenonJune7,2018showsexhibitsattheAfricanArtExhibitioninsouthwestChina(Xinhua/WangQuanchao)AjournalisttakesphotosattheAfricanArtExhibitioninsouthwestChinasChongqing,June7,(Xinhua/WangQuanchao)

  TeachersencourageexamineesatanexamvenueinGuiyang,capitalofsouthwestChinasGuizhouProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/TaoLiang)ExamineeswaittoenteranexamvenueatLhasaMiddleSchoolinLhasa,capitalofsouthwestChinasTibetAutonomousRegion,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LiuDongjun)AteacherdistributesIDcardsandstationerytoexamineesatanexamvenueinChengdu,capitalofsouthwestChinasSichuanProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/JiangHongjing),capitalofeastChinasAnhuiProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ZhangDuan)AstaffmemberchecksthecredentialsofexamineesatanexamvenueinBeijing,capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LuoXiaoguang)AnexamineeclapshandswithherteacherbeforeenteringanexamvenueinXian,capitalofnorthwestChinasShaanxiProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ZhangBowen)ExamineesenteranexamvenueatHainanMiddleSchoolinHaikou,capitalofsouthChinasHainanProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/GuoCheng)AstudentencouragesexamineesatanexamvenueinBeijing,capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan),capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan)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)

  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)

  AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)TeachersencourageexamineesatanexamvenueinGuiyang,capitalofsouthwestChinasGuizhouProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/TaoLiang)ExamineeswaittoenteranexamvenueatLhasaMiddleSchoolinLhasa,capitalofsouthwestChinasTibetAutonomousRegion,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LiuDongjun)AteacherdistributesIDcardsandstationerytoexamineesatanexamvenueinChengdu,capitalofsouthwestChinasSichuanProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/JiangHongjing),capitalofeastChinasAnhuiProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ZhangDuan)AstaffmemberchecksthecredentialsofexamineesatanexamvenueinBeijing,capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LuoXiaoguang)AnexamineeclapshandswithherteacherbeforeenteringanexamvenueinXian,capitalofnorthwestChinasShaanxiProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ZhangBowen)ExamineesenteranexamvenueatHainanMiddleSchoolinHaikou,capitalofsouthChinasHainanProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/GuoCheng)AstudentencouragesexamineesatanexamvenueinBeijing,capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan),capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan)

  Eightetiquettevolunteersposeforaphotoatthemediacenterforthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,eastChinasShandongProvince,June5,,000volunteershavebeenmobilizedtoofferservicesforthesummit,fromassistingwithguestsarrivalanddeparture,translation,andmediarequests,totheoperationofcityfunctionssuchastransportation,telecommunication,andbanks.(Xinhua/LiZiheng),2008showsJiangShifa(R)andhiswifeLianShifangasvolunteersfortheBeijing2008OlympicGamesSailingeventinQingdao;LowerphototakenonJune5,2018showsthecoupleasvolunteersfortheShanghaiCooperationOrganization(SCO)QingdaoSummit,inQingdao,eastChina,74yearsoldandhiswife,72yearsold,ittenyearsaftertheyservedasvolunteersfortheBeijing2008OlympicGamesSailingeventinQingdao.(Photo/Xinhua)JiangShifa(R)andhiswifeLianShifang,volunteersfortheShanghaiCooperationOrganization(SCO)QingdaoSummit,guideatouristinWendengRoadinQingdao,eastChinasShandongProvince,June5,,74yearsoldandhiswife,72yearsold,ittenyearsaftertheyservedasvolunteersfortheBeijing2008OlympicGamesSailingeventinQingdao.(Xinhua/JiangKehong)JiangShifa(R)andhiswifeLianShifang,volunteersfortheShanghaiCooperationOrganization(SCO)QingdaoSummit,giveouthandbooksatMingxialuCommunityinQingdao,eastChinasShandongProvince,June5,,74yearsoldandhiswife,72yearsold,ittenyearsaftertheyservedasvolunteersfortheBeijing2008OlympicGamesSailingeventinQingdao.(Xinhua/JiangKehong)JiangShifa(R)andhiswifeLianShifang,volunteersfortheShanghaiCooperationOrganization(SCO)QingdaoSummit,gatheratMingxialuCommunityfortraininginQingdao,eastChinasShandongProvince,June5,,74yearsoldandhiswife,72yearsold,ittenyearsaftertheyservedasvolunteersfortheBeijing2008OlympicGamesSailingeventinQingdao.(Xinhua/JiangKehong)JiangShifa(3rdR)andhiswifeLianShifang(2ndR),volunteersfortheShanghaiCooperationOrganization(SCO)QingdaoSummit,guidepassengersatabusstopinQingdao,eastChinasShandongProvince,June5,,74yearsoldandhiswife,72yearsold,ittenyearsaftertheyservedasvolunteersfortheBeijing2008OlympicGamesSailingeventinQingdao.(Xinhua/JiangKehong)EtiquetteteacherLuMin(1stR)instructsvolunteersforthe18thShanghaiCooperationOrganization(SCO)SummitinQingdao,eastChinasShandongProvince,June5,,000volunteershavebeenmobilizedtoofferservicesforthesummit,fromassistingwithguestsarrivalanddeparture,translation,andmediarequests,totheoperationofcityfunctionssuchastransportation,telecommunication,andbanks.(Xinhua/LiZiheng)Eightetiquettevolunteersforthe18thShanghaiCooperationOrganization(SCO)SummitpracticeinQingdao,eastChinasShandongProvince,June5,,000volunteershavebeenmobilizedtoofferservicesforthesummit,fromassistingwithguestsarrivalanddeparture,translation,andmediarequests,totheoperationofcityfunctionssuchastransportation,telecommunication,andbanks.(Xinhua/LiZiheng)

  FolkartistZhangBinmakesdoughfigurinesinanintangibleculturalheritagefairinShenyang,capitalofnortheastChinasLiaoningProvince,June9,ritageDayonSaturday.(Xinhua/YaoJianfeng)PeoplevisitChineseculturalheritageartexhibitioninGuangzhou,southChinasGuangdongProvince,June9,ritageDayonSaturday.(Xinhua/LuHanxin)ApersonvisitsChineseculturalheritageartexhibitioninGuangzhou,southChinasGuangdongProvince,June9,ritageDayonSaturday.(Xinhua/LuHanxin)InkstoneamateurscompeteinaninkstonecarvingcontestinWuyuan,eastChinasJiangxiProvince,June9,ritageDayonSaturday.(Xinhua/SongZhenping)AchildgetshissugarpaintinginanintangibleculturalheritagefairinShenyang,capitalofnortheastChinasLiaoningProvince,June9,ritageDayonSaturday.(Xinhua/YaoJianfeng)AfolkartistcommunicateswithonlineaudienceinnorthChinasTianjinMunicipality,June9,ritageDayonSaturday.(Xinhua/LiRan)

  Ajournalistasksforinformationatthemediacenterforthe18thShanghaiCooperationOrganizationSummitinQingdao,Shandongprovince,onFriday.[PhotobyFengYongbin/ChinaDaily]LiGuangda,avolunteeratthe18thShanghaiCooperationOrganizationSummit,saidhehasreceivedmanythumbs-upfromforeignreportersforhisprofessionalandfriendlyassistancesincehebeganservingattheinformationdeskofthesummitsmediacenter."It,,"saidt,000studentvolunteersrecruitedfrom10universitiesinthecoastalcity,,another18,000volunte,theyarenicknamed"littleseasplashes".Theyhavebeenmobilizedtooffervariousservicesforthesummit,suchasassistancetoguestswitharrivalanddeparture,ionSummitinQingdao,Shandongprovince,onFriday.[PhotobyFengYongbin/ChinaDaily]Li,anundergraduatemajoringinEnglish,,000studentsappliedtobecomevolunteersforthesummit,accordingtothemeetingsorganizingcommittee."Theenthusiasmfromstudentsisbeyondourexpectations,"saidSunJian,whoworksforthecommitteesworkinggroupofvolunteers."Wevechosentheoneswithbetterexpertisethatisparticularlyhelpfulforthesummit,suchasstudentsmajoringinforeignlanguagesandcomputers."Eachvolunteerhasreceivedabout40hoursoftrainingbeforethesummit,hesaid."Besideslessonsonetiquette,weveinvitedexpertsfromtheMinistryofForeignAffairstogivethevolunteerslecturesonhowtheSCOworksandthetraditionsofthecountriesparticipatinginthesummit."LihasbeenaboutQingdao,becausetheyaretheonesthereportersgotofirstiftheyhavequestions,ionSummitinQingdao,Shandongprovince,onFriday.[PhotobyFengYongbin/ChinaDaily]"Itsanhonortobepartofsuchanimportantevent,"headded."WejustwanttoleavetheguestsandreporterswithagoodimpressionofQingdaoandtheChinesepeople."Moreimportant,Ialsofindjoyinmeetingpeoplefromdifferentcountries,whichhasbroadenedmyviews,",ateacherfromOceanUniversityofChinaandavolunteerorganizer,saiditsnotaneasyjobtomaintainagoodpostureandgreetpeoplewithasmilealldaylong,aswellasofferusefulandprofessionalassistance."Thestudentstoldmethattheyenjoytheworkbecausetheygenuinelywanttoofferthebestservice,"shesaid."Improudofthem."FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)

  

  

 
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给力!拯救手机族的“护眼药”就藏在这……

给力!拯救手机族的“护眼药”就藏在这……

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来自各类食物中的天然色素也就自然而然的成为了食品界的宠儿,在产品中添加天然色素成为了商家宣传和推广的热点之一,如果这些天然色素再具有一点保健功能,那就更是皆大欢喜。

AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)AerialphototakenonJune1,2018showstheQingdaoJiaozhouBayBridgeinQingdao,eastChinauangdaodistrict.(Xinhua/GuoXulei)

近年来,由于苏丹红等违法添加物造成的食品安全事故一度让人们变得杯弓蛇影,甚至对合法的食品添加剂也避之不及,因此,只要某种食品上标注“无添加”、“纯天然”字样,就会备受追捧。来自各类食物中的天然色素也就自然而然的成为了食品界的宠儿,在产品中添加天然色素成为了商家宣传和推广的热点之一,如果这些天然色素再具有一点保健功能,那就更是皆大欢喜。叶黄素,就是这样一种既能带给食物以鲜亮的明黄色泽,同时还具有强大的保护视力作用的天然色素。

1、叶黄素作食品添加剂,差强人意

叶黄素广泛存在于很多植物中,也算类胡萝卜素大家庭一员,但由于它不能被转化成维生素A,因此,很长时间内人们并没对它特别重视。现在遇到天然色素这个契机,它鲜亮的色泽被人们相中,添加进各类烘培食品、饮料中,给食物穿上了漂亮的黄色外衣。甚至有人脑洞大开,将富含叶黄素的植物加入鸡饲料中,使鸡蛋壳和蛋黄呈现较深的金黄色,以此博得消费者的偏爱。且不说蛋壳、蛋黄的颜色并不能影响鸡蛋的营养价值高低,但部分商贩将这类人工养殖获得的“深色鸡蛋”宣传为散养鸡蛋、柴鸡蛋,就值得注意了。

事实上,作为食品添加剂,“天然色素”叶黄素的表现差强人意,从性能和性价比而言,无法与合法的人工色素一较高低。首先,叶黄素具有较强的抗氧化性,所谓抗氧化性,是“帮助人们”抵抗自由基的氧化作用,也就是说,需要叶黄素牺牲自身来完成“抗氧化”这一过程。事实也的确如此,叶黄素对光的稳定性不够好,在有光照的情况下,可能无法按照人们的意愿一直保持愉悦的黄色或橙色(浓度高时呈现橙色);其次,作为一种高大上的“天然色素”,叶黄素的价格也并不亲民,根本无法和人工合成色素抗衡。可见,叶黄素作为天然色素用于食品中的表现的确差强人意,想让叶黄素成为广受欢迎的食品添加剂,可能并非易事。

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