简介：ZhongyuanoilfieldsaremainlylocatedinDongpudepression,wherethegeologicalconditionswereextremelycomplicatedandtheexternalstressisabnormallyhigh,thepipeusedmayfailintheradialdirectionowingtowellshrinkagecausedbythecreepofsaltrock,leadingcatastrophiceconomicloss.Thereforethisregionhasbeenwellkownasatouchstoneforhighcollapseresistancecasingsincelongbefore.Inordertosatisfytherequirementforhigh-collapsestrengthcasingowingtothecreepofsaltbedstratuminDongpuDepressionregion,BG140TT,BG150TTandBG160TThigh-strengthcollapseresistancecasingseriesweredevelopedtobettercopewiththeseveregeologicalconditions.Amongthecasingseries,aBG160TTnon-APIspecificationcasingwithcollapsestrengthnotlessthan170MPawereprepared.Uptopresent,allthesehigh-strengthcollapseresistancecasinghavebeensuccessfullyappliedintheDongpuDepressionregion.Theresearchconcept,mechanicalproperties,aswellasapplicationresultwereintroducedinthispaper.

简介：Trendsintoday’ssteelproductionshowincreasingdemandsforhighly-sophisticatedsteelgrades.Therefore,thesteelindustrywilleventuallyberequiredtoinstallbestperformingtechnologiestomeetgovernmentalspecificationsdesignedtosignificantlyreduceenvironmentalemissions.Sucheffortsaresupportedbyinnovativenewsolutionsintheentiresteelmakingprocess.Oneprocessthatwillneedtobeaddressedisthecleanlinessofthesteelintheliquidsteelphase,especiallyduringtheBOF-tappingprocess.Thenewconvertergate(CG)(Fig.1)bestsupportstheslidegatetappingtechnologyforconvertersintermsofcleansteel,productivity,yieldandavailability-atreducedcosts.TheCGgateintroducesauniquefeatureforconverterslidegates:Thebottomplatecanbeexchangedwhilethegateremainsmountedontheconverter.Thisnewfeatureallowsforanincreasedutilisationoftherefractorypartsandasignificantreductionofthedowntimeoftheconverter.This'designedefficiency'isachievedwitharefractorysetconsistingofthreeidenticalplates-twobottomplatesandonesliderplate-andanozzle.AnumberofotherimprovementssuchasautomaticcylindercouplingusingtheInterstopSNAPtechnologyandatwosteptensioningsystemhavealsobeenimplemented.ThenewsystemisdesignedtomeetminimalspacerequirementsandthereforewilladapttomostBOFshops.Toperformpreparation,serviceandmaintenanceworkthemodularCGgatecanbedismountedfromtheconverterandsimultaneouslyreplacedbyaready-to-useunit.Thedegreeofautomationfordismountingandmountingaswellasforoff-linepreparationhasbeenenhancedandreducesmanualefforts.Thispaperprovidesasolutiontotheobvioustrendtowardsefficientandcontrolledproductionofcleansteel,ingeneral,andespeciallyatBOFshops.Moreover,itspecificallydescribestheoperationalresultsofthisinnovativeBOFtappingequipmentatSalzgitterFlachstahlGmbH,Germany.

简介：三协作聚合物，Ln2(bpdc)3(phen)2(H2O)2(Ln=Nd(1)，Eu(2)，和Tb(3)；bpdc=2,2-bipyridine-3,3-dicarboxylate；phen=1,10-phenanthroline)，被Ln2O3的热水的反应与2,2-bipyridine-3,3-dicarboxylate酸，和1,10-phenanthroline获得。他们被单个水晶的X光检查衍射，红外系列，和photoluminescent系列描绘。13的结晶的数据显示他们是isostructural。两建筑群包含了桨车轮积木，由bpdc和phenligands形成了。这些桨车轮第二等的大楼单位(SBU)进一步被连接到形式二维(2-D)金属由2,2-bipyridine-3的器官的框架(MOF)网络，和3-dicarboxylate连接器。一三维(3-D)超分子的结构被在邻近的2-D之间的芳香的相互作用形成无限的网络。Photoluminescent大小显示铕化合物2和铽化合物3强壮、红、绿emitters分别地。

简介：四lanthanide协作建筑群，也就是[行(2,3-DClBA)3(5,5-dmebipy)(H2O)]2(Ln=Sm(1),Eu(2)，Dy(3)，惊讶(4))；2,3-DClBA=2,3-dichlorobenzoate；5,5-dmebipy=5,5-dmethylbipyridine)被元素的分析，红外线的光谱学和单个水晶X光检查衍射综合并且描绘。调查结果显示建筑群3是一个dinuclear分子，并且中心Dy3+是八坐标的。每个dinuclear单位能被H债券和卤素卤素相互作用连接。建筑群2的光性质建议了Eu3+离子的典型强烈排出物。热分析证明建筑群在三分解了步：协作水然后第一被失去中立ligand5,5dmebipy被失去，最后，2,3-DClBAligand被失去。

简介：新奇双1:11系列arsenotungstate，[CuI(phen)2]5H6[Sm(AsW11O39)2]