简介：EffectofLa-richrareearthoneutecticmicrostructureinA1-2%Fealloywasstudied.WhentheadditionofREissmall,a-A1phaseisintheformofcellulardendrite.WiththeincreaseoftheadditionofRE,thenucleationandgrowthofa-A1dendritearesuppressed,andeutecticAl3Fephaseisrefined.WhentheadditionofREgetsto0.6%(massfrac-tion),thesizeofeutecticAl3Feincreases.Inaddi-tion,mechanismoftheeffectofmixedREoneutecticmorphologyofA1-2%Fealloyisexplored.

简介：36从柱子被恢复了的度和顺序的地球重力场模型CDS01S处理了科学轨道和GFZ的机载的加速表数据“sCHAMPsatellite。模型与精确性解决大地水准面比在700km一半波长的一个决定的4厘米好。由使用重力势系数的学位差别变化把模型CDS01S与EIGEN3P，EIGEN1S和EGM96作比较，结果显示系数ofCDS01S离EIGEN3P的那些很靠近。在在上面的精确性ofgeopotential系数之间的比较的结果当模特儿，显示在在EGM96的比那高的CDS01Sis的系数的精确性。直到30个学位的CDS01S和GGM01C的大地水准面波动被计算，标准差是在他们之间的4.7厘米。

简介：MIITissuedthenoticeabout2017thefirstbatchofrareearthproductioncontrolquotasrecently.Accordingtothenotice,overallrareearthmineralproductionquantityiscontrolledat52,500tonsandsmelting&separationproductsat50,075tons,whileitwas52,500tonsand45,000tons,respectively,for2016.Accordingtothenotice,rareearthcontrolquotasshallbeallocatedtoenterprisesthatmeetthenationalrareearthindustrypoliciesandindustrialdevelopmentplanningrequirements.

简介：Toimplement'SomeOpinionsoftheStateCouncilofP.R.C.onPromotingtheSustainableandHealthyDevelopmentofRareEarthIndustry',regulateandstandardizerareearthproductionorderandacceleratethetransformationofrareearthindustrydevelopmentpattern,theMinistryofIndustryand

简介：Ⅲ.ThoughtsondevelopmentofrareearthindustryDevelopmentofChineserareearthindustrycanbedividedintofourstagesroughly,infantdevelopmentstage(1950s～theendof1980s),stablegrowthstage(1990～1998),fastexpandingstage(since1999)andrationaldevelopmentstage(after2007)withimplementationofadministration

简介：Rare-earthcoordinationpolymers(RECPs),asafamilymemberofcoordinationpolymers(CPs),havebeenpreparedandstudiedwidely.Thankstotheircharacteristicpropertiesandfunctions,RECPshavealreadybeenusedinvariousapplicationfieldsrangingfromcatalysistodrugdelivery.Inrecentyears,CPswithtunablemorphologiesandsizeshavedrawnincreasinginterestandattractiveattention.ThisreviewpresentstherecentresearchprogressofRECPmicro/nanomaterials,andemphasizesthepreparation,propertiesandbroadapplicationsofthesefascinatingmaterials.

简介：Inearthquakeproneareas,understandingoftheseismicpassiveearthresistanceisveryimportantforthedesignofdifferentgeotechnicalearthretainingstructures.Inthisstudy,thelimitequilibriummethodisusedforestimationofcriticalseismicpassiveearthresistanceforaninclinedwallsupportinghorizontalcohesionlessbackfill.Acompositefailuresurfaceisconsideredinthepresentanalysis.Seismicforcesarecomputedassumingthebackfillsoilasaviscoelasticmaterialoverlyingarigidstratumandtherigidstratumissubjectedtoaharmonicshaking.Thepresentmethodsatisfiestheboundaryconditions.Theamplificationofaccelerationdependsonthepropertiesofthebackfillsoilandonthecharacteristicsoftheinputmotion.Theaccelerationdistributionalongthedepthofthebackfillisfoundtobenonlinearinnature.Thepresentstudyshowsthatthehorizontalandverticalaccelerationdistributioninthebackfillsoilisnotalwaysin-phaseforthecriticalvalueoftheseismicpassiveearthpressurecoefficient.Theeffectofdifferentparametersontheseismicpassiveearthpressureisstudiedindetail.Acomparisonofthepresentmethodwithothertheoriesisalsopresented,whichshowsthemeritsofthepresentstudy.

简介：2.3UnbalancedproductionandsaleswillbeworsenedThereisstilldiversityofthedemandforvariousREproductsinthefollowingfewyears.Especially,fastdevelopmentofNdFeBpermanentmagneticmaterialsworsenstheunbalanced

简介：基于密度，功能的理论(DFT)和投影机扩充了的精力充沛的计算挥动的Abinitio为决定lanthanidesesquioxidesLn_2O_3的多型性的方法(爪)(在哪儿行=稀土元素的元素，Y，和Sc)，LnMO_3perovskites(在哪儿M=AlandGa)，并且Ln_2B_2O_7pyrochlores(在哪儿B=Ti，Zr，和Hf)被报导。除了theC类型Ln_2O_3，相对latticest能力与立方的结构，计算全部的精力为是更加更否定的与非常估计的结果或试验性的结果同意了很好。随Ln~(3+)阳离子半径的增加，多态的结构显示出果汁饮料生产趋势。第三的氧化物陶艺的形成的热含量的趋势和数量从他们相当适合于的成分二进制代码氧化物综合了可得到的试验性的结果，和珍贵热力学的性质被负担得起到化合物，没有试验性的数据为是可得到的。两perovskitesandpyrochlores的形成的热含量趋于随Ln~(3+)阳离子半径的增加变得更否定。

简介：MIITissuedthenoticeabout2016thefirstbatchofrareeachproductioncontrolquotasrecently.Accordingtothenotice.overallrareeachmineralproductionquantityiscontrolledat52,500tonsandsmelting&separationproductsat45,000tons,amongwhich,productioncontrolquotasofthesixrareeachgroupsare52,440tonsofmineralproductsand44,805tonsofsmelting&separationproducts.Thenoticepointedoutthatrareeachisaproductthatshouldstrictlyfollowtotalvolumncontrol

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简介：Theearth-resistivitychangerecordedbeforetheJingtaiearthquake(EQ).withMs=6.2at11geoelectricstationswithin400kmoftheEQwasdiscussedinthispaper,andthefollowingconclusionsaremade:1)imminentvariationsofearth-resistivitypriortotheEQwererecordedattheWuwei,DingxiandShandanstationsimmediatelybeforetheEQ;2)therecordabilityoftheimminentvariationsatastationwasrelatedtotheactivedeepfaultsandthestronglyactivefaultsinsideandoutsidethefocalzone,andtothecausativestressfieldaswell;3)thetemporalandspatialcharacteristicsoftheearth-resistivitychangeimmediatelybeforetheEQshowedthattheEQwasprobablyinducedbytheNNWdirectionstressfield(orbyanotheroneofsimilardirection)whichwasgreatlyincreasedduringashortperiodimmediatelybeforetheEQandthatthenorthernwallofthefocalfaultplayedamajorroleintheprocessoftheEQpreparationandoccurrenceoftheEQ.

简介：Rolesofrareearthoxide(RE2O3)additivesinmillimeter-wave(MM)sinteringofAlNwereinvestigatedfromthestandpointsofphasediagram,heatingcharacteristicsofrareearthoxides,andmorphologyofintergranularoxidephase.Inthemillimeter-wavesinteringofAlN,densificationtemperaturedecreasedwiththedecreaseoftheionicradiusofrareearthionandwascloselyrelatedwiththeeutectictemperatureintheRE2O3-Al2O3binarysystem.Thelowestdensificationtemperatureinthemillimeter-wavesinteringofAlNwithYb2O3additivewasattributedtothelargestheatingrateofYb2O3·Al2O3binaryoxideundermillimeter-waveradiation.Furthermore,thelowestdensificationtemperaturecouldbeattainedwhileselectingtheYb2O3contentsoastoformtheintergranularphasewiththeeutecticcompositionintheYb2O3-Al2O3binarysystem.TheresultshowedgoodagreementwiththeabovementionedduringthesinteringofSi3N4withYb2O3-Al2O3additive.FromTEMobservation,itwasverifiedthatfilm-likeintergranularoxidephaseformedundermillimeter-waveradiationwasfavorableforattaininghighthermalconductivityintheYb2O3addedAlNs.

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

简介：目前GoogleEarth不断增加卫星影像资料，提供更多地区高解析的卫星影像。将GoogleEarth系统应用到水利工程行业，首先就是一个很具新意的创新之举。经过深入的研究和分析GoogleEarth系统功能对水利建设的作用，进一步提高了我们对水利工程的认识，同时也为提高水利行业工程管理提供了一种全新的辅助工具。因此本文主要就水利水电测绘中Google?Earth应用进行探讨分析，并提出一些个人观点，以供参考。

简介：    [内容摘要]使学生能够通过标题和图片预测文章大意；能够通过快速阅读定位事实细节题目的答案；能够用自己的语言简单复述部分课文内容；通过本节课，培养学生创新思维，认识到环保的重要性并能够创造性地处理生活垃圾，发扬勤俭节约的优良品质，认识到垃圾回收的价值。帮助学生意识并理解词根词缀法对英语词汇学习的便利。采用希沃白板课堂活动中的“趣味分类”游戏；培养学生快速阅读获取主要大意的能力和查找事实细节信息的能力；辅助希沃白板中的思维导图，因势利导，环环相扣地提问；培养学生环保意识和勤俭节约的优良品。环境污染视频导入，唤起学生环保的共鸣，针对垃圾的可回收与不可回收设置“趣味分类”游戏，课程结束布置垃圾分类相关作业；难点：根据仅有信息进行课文复述借助希沃白板的“思维导图”，使复述有依可循，帮助学生架构课文内容在日常生活中坚持垃圾分类并积极主动展开回收再利用布置相关作业，培养垃圾分类意识，牢记五中分类，并回收利用生活废弃物。

简介：Theisothermsforsorptionoffulvicacidfromweatheredcoal,andthedistributionratios,Rd,of^169YbatvariousconcentrationoffulvicacidonNa-bentoniteandNa-Kaolinitehavebeenmeasured.Meantime,thedependencesofRdof^169YbonpHvaluesataconstantinitialconcentrationofFAwereobtained.Itwasnotfoundthattheparallelrelationshipbetweenthehighaffinityofhumicsubstancetotheclayandthehighuptakeofmetalwhichhasstrongabilitytocomplexwiththishumicsubstance.

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简介：Theauthorsstudythestructure,functionsanddataorganizationforthehazardanalysissystemofurbanpost-earthquakefireontheplatformofGIS.Ageneralhazardanalysismodelofthepost-earthquakefireispresented.TakingShanghaicentraldistrictasbackground,asystemforhazardanalysisofthepost-earthquakefireandauxili-arydecision-againstfireisdeveloped.

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