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简介：August1~10,2013Exceptpricedropofdysprosiumrelatedproducts,priceofmostrareearthproductskeptstableaftermarkedpriceincreaseinpreviousstage.However,demandfromendapplicationremainedsoft.ThereweretransactionsonsmallvolumeinNdFeBmagnetmarket.Themarketofphosphors,catalyst

简介：March1～10,2013Rareearthmarketremaineddepressedrecently.OrdersfromNdFeBmagneticmaterialsandphosphorplantswerefew.Therewasstillnosignofreboundincatalyst,polishingpowderandceramicmarket.Mostconsumerstendedtowaitandseefurthermarkettrend.Similarly,tradingwasslowinexportmarket.Overseaimportersonlymade

简介：May1～10,2013Rareearthdemandfromdownstreammarketremainedsoft.Therewasnosignofrecoveryinbothdomesticandexportrareearthmarkets.Weakdemandandenoughsuppliesledtoasmalldecreaseofrareearthprices.Consumerswerepessimisticaboutrareearthmarketinthefirsthalfyear.

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简介：1.TheStateCouncilpublishedtheWhitePaperon'SituationandPoliciesofChina'sRareEarthIndustry'TheStateCouncilpublishedtheWhitePaperon'SituationandPoliciesofChina'sRareEarthIndustry'onJune20,2012.Itcomprehensivelyintroducedcurrentsituation,problemsbeingconfrontedandrelatedpoliciesofChinarareearth

简介：稀土元素金属(雷姆)是在高技术，发电，通讯，和防卫工业有普遍、唯一的应用的一系列17个元素。这些资源对突现的持续精力和碳选择技术也枢轴。雷姆的恢复由于它与各种各样的工业应用一起的高市场价格有趣。常规技术，viz。降水，过滤，液体液体抽取，稳固液体的抽取，离子交换，超级批评抽取，电迷，电精制，精制的electroslag，等等，为雷姆的恢复被开发了，不是经济地吸引人的。Biosorption从水的答案为稀土元素金属的恢复代表biotechnological革新以及一个合算的优秀工具。许多biomaterials象水藻那样，真菌，细菌，树脂，激活的碳，等等，被报导了为雷姆的恢复用作潜在的吸附物。影响稀土元素金属并且等温线建模的举起的金属绑定机制，以及参数这里被介绍。这篇文章提供过去的成就和用答应biosorbents能为恢复雷姆用作一个节俭的工具的一些执行的biosorption研究的当前的情形的概述。不同工人报导的试验性的调查结果将提供卓见进这研究边疆。

简介：Whatisthepost-WTOera?ChinabecameonememberofWTOon10November2001,followedbyfiveyears'transitionalperiod.Post-WTOerashouldstartfrom2007afterthetransitionperiod.ChinabegantoissuemandatoryproductionquotasonREmineralproductssince2006andonREsmeltingproductssince2007,whichwasrightintheeraofthepost-WTO.REdemandandsupplysituationinthepost-WTOeraisanalyzedinthispaper,basedoncurrentstatusquoofChina'sREindustryandRE

简介：DrivenbycuriosityaboutpossibleflightoptionsfortheChang’e-2spacecraftafteritremainsattheSun-EarthL2point,effectiveapproachesweredevelopedfordesigningpreliminaryfuel-optimalnear-Earthasteroidflybytrajectories.Theapproachesincludetheuseofmodifiedunstablemanifolds,gridsearchofthemanifolds’parameters,andatwo-impulsemaneuverfororbitalphasematchingandz-axisbiaschange,andaredemonstratedtobeeffectiveinasteroidtargetscreeningandtrajectoryoptimization.Asteroidflybysareexpectedtobewithinadistanceof2×107kmfromtheEarthowingtotheconstrainedEarth-spacecraftcommunicationrange.Inthiscase,thespacecraft’sorbitalmotionissignificantlyaffectedbythegravitiesofboththeSunandtheEarth,andtherefore,theconceptofthe"heliocentricoscillating-Keplerorbit"isproposed,becausetheclassicalorbitalelementsoftheflybytrajectoriesreferencedintheheliocentricinertialframeoscillatesignificantlywithrespecttotime.Theanalysisandresultspresentedinthisstudyshowthat,amongtheasteroidswhoseorbitsarethemostaccuratelypredicted,"Toutatis","2005NZ6",or"2010CL19"mightbeencounteredbyChang’e-2inlate2012or2013withtotalimpulseslessthan100m/s.

简介：III.RareEarthSupplyandDemandinthepost-WTOEra1.SupplyItisestimatedthatexportquotawillkeepstableat31,000tonsorsointhenexttwoyears,thoughmerely50-60%ofrareearthexportquotaswereusedin2011and2012.Productionquotasmightbeadjustedwiththerareearthproductioninoverseacountriesandchangesinrareearthmarket.Besides,consolidationofrareearthindustryand

简介：SeismicPvelocitystructureisdeterminedfortheupper500kmoftheinnercoreandlowermost200kmoftheoutercorefromdifferentialtraveltimesandamplituderatios.ResultsconfirmtheexistenceofagloballyuniformFregionofreducedPvelocitygradientinthelowermostoutercore,consistentwithironenrichmentneartheboundaryofasolidifyinginnercore.Pvelocityoftheinnercorebetweenthelongitudes45oEand180oE(quasi-EasternHemisphere)isgreaterthanorequaltothatofanAK135-Freferencemodelwhereasthatbetween180oWand45oE(quasi-WesternHemisphere)islessthanthatofthereferencemodel.Observationofthisheterogeneitytoadepthof550kmbelowtheinnercoreandtheexistenceoftransitionsratherthansharpboundariesbetweenquasi-hemispheresfavoreithernoorveryslowinnercoresuperrotationoroscillationswithrespecttothemantle.DegreeoneseismicheterogeneitymaybebestexplainedbyactiveinnercorefreezingbeneaththeequatorialIndianOceandominatingstructureinthequasi-EasternHemisphereandinnercoremeltingbeneathequatorialPacificdominatingstructureinthequasi-WesternHemisphere.Variationsinwaveformsalsosuggesttheexistenceofsmaller-scale(1to100km)heterogeneity.

简介：MinistryofCommerce(MOFCOM)releasedrareearthexportquotasforthesecondhalfof2013inaccordancewithrelatedlawsandregulations.Thesecondbatchofrareearthexportquotasshouldbeallocatedtothosequalifiedenterprises;Thesecondbatchofrareearthexportquotasareissuedonthebasisofrareearthenterprises'export

简介：Separationtechnologyofrareearthelements(REEs),asthecriticalstepintheseparationprocess,hadlongbeenfraughtwithtechnicaldifficulty.AresearchprojectconductedbyBaotouShiboRareEarthExtraction&EquipmentCo.Ltd.,BaotouREEResearchInstitute,andBaotouSteel&REEGroupHi-TechCo.Ltd(InnerMongolia),hassuccessfullysolvedtheproblemusingacentrifugalextractorandadvancedtechniquestoachieveakeybreakthrough.ThekeydeviceofthewholeproductionlinecontainsCTL-500FBcentrifugalextractorsanddigitalflowsystemequipment.Employmentofanautomaticcontrollingsystemanditsfullyfunctionaloperationsystem,alongwithvarioussupportivefacilities,fulfilstheseparationprocessesforvariousrareearthmaterials.Comparedwithconventionalbox-typeseparationtechnology,thisnewapproachsignificantlyimprovesthestirringintensity,thusimprovingproduction

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简介：Inthelastseveralyearssince2004animportantnewfindinghasbeenunveiledbycombinedeffortsduetoJapanese(SatoruTanaka),French(RenaudDeguen,TAlbousierreandMarcMonnereau),AmericanandChinesegeophysicists(XiaodongSongandVernonFCormier)whoemployedfromunambiguousdetailedseismologicalevidenceandexplainedbycleartheoreticalandsoundlaboratoryargumentsdrawnfromfluiddynamicsthatthereexistsastrong

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简介：AstatisticalanalysisontheWenchuanaftershockactivitytriggeredbytidalforcesissystematicallystudiedbasedonSchusterstest,includingearthquakestriggeredbytidalforce,tidalstressandtidalcoulombfailurestress.TheresultsshowthatagroupofstrongaftershockswhichoccurredattheendofJulytoearlyAugustin2008atthenorthofWenchuanwereobviouslytriggeredbyearthtide,thesameconclusionisdrawnbySchusterssmoothtestofthetidalforce,tidalstressandtidalcoulombfailurestress.Inaddition,theWenchuanaftershockactivityisobviouslytriggeredbyfortnighttide.Inthenorth,theaftershockshappenedmorefrequentlyinthefirstandlastquartersofthemoon,andinthesouth,theaftershockshappenedmorefrequentlyinthefirstandlastquartersofthemoonandduringthefullmoon.

简介：ThearticlewasextractedfromNewMaterialsIndustryRareearthpermanentmagneticmaterialsheadedbySm-CoandNdFeBhavethehighestmagneticpropertyamongallotherpermanentmagneticmaterialstoday.Theyarewidelyusedinmanyfieldsofnationaleconomysuchasinformation&communications,electronics,medicalequipment