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简介：Non-lineardevelopmentofdoubletearingmodesinducedbyelectronviscosityisnumericallysimulated.MHDflowlayersaredemonstratedtomergeinthedevelopmentofthemodes.Theshearedflowsareshowntoliejustattheboundariesofthemagneticislands,andtohavesuffcientlevelsrequiredforinternaltransportbarrier(ITB)formation.PossiblecorrelationbetweenthelayerformationandtriggeringofexperimentallyobservedITBs,preferentiallyformedinproximitiesofrationalfluxsurfacesoflowsafetyfactors,isdiscussed.

简介：在二进制Sm公司系统的许多金属间化合的混合物被考察，并且内容集中于水晶结构，磁性和nanoscale效果。代表性的nanocrystallineSm公司混合物在细节，为他们的格子结构的图和原子地点被介绍，占有被提供。而且，nanocrystallineSm公司混合物的磁性与常规多晶的对应物的那些相比。它证明nanocrystallineSm公司混合物展览专辑阶段稳定性和显著地提高的磁性的性能，它是矩阵的有希望的候选人分阶段执行开发永久磁铁，特别地先进高温度的磁性的材料。

简介：ThestructureandintrinsicmagneticpropertiesofRFeM（M=VorTi）,type1:12,havebeenstudiedbymagneticmeasurementandX-raydiffraction.Theyarebody-centeredtetragonalThMn12structure.Thechangesofcrystallatticeconstantscoincidewiththatoftheirelementradii.Curietemperatureisdecidedmainlybytheexchangeinteractionsof3d-3dand3d-4fatompairs.Thedataobtainedbymean-fieldapproximationagreewellwithexperimentalvalues.ThemagneticmomentcouplinginthesecompoundsforLREisferromagnetic,andforHREisantiferromagnetic.Atlowtemperature,anisotropyfieldisdecidedbyREsublattice.Inthispaper,theinfluenceofmagneticpropertiesofcobaltandnickelreplacingironhasalsobeenstudied.

简介：在有卡住大头针的边界条件的非局部的nanobeams的postbuckling配置附近的非线性的免费颤动是调查的经分解，认为从中间飞机的拉长并且特别地产生的几何非线性是一个纵的磁场的效果。当应用轴的力量是小的时，nanobeam是稳定的，它的免费颤动在直平衡位置附近。当轴的力量变得大并且在某个批评价值(批评轴的力量)以外，然而，积极或否定的重要平衡配置发生，免费颤动在弄弯的配置附近。当为弄弯的nanobeam它包含立方、二次的非线性时，为在弄弯前的nanobeam的管理方程展出立方的非线性。基于非线性的管理方程，postbuckling配置的近似分析解决方案以应用轴的力量被评估，证明磁场参数在批评轴的力量，弄弯的排水量和nanobeam系统的线性频率上有大效果。更有趣地，当它能是比在postbuckling政体的情况中的线性的低的时，非线性的频率被发现通常比在prebuckling政体的情况中的线性频率高。非线性的频率能被磁场，与中间飞机的拉长联系的非线性的系数，和起始的颤动振幅显著地影响。

简介：Weinvestigateeffectsofannealingonmagneticpropertiesofathick(Ga,Mn)Aslayer,andfindadramaticincreaseoftheCurietemperaturefrom65to115Kbypostgrowthannealingfora500-nm(Ga,Mn)Aslayer.AugerelectronspectroscopymeasurementssuggestthattheincreaseoftheCurietemperatureismainlyduetodiffusionofMninterstitialtothefreesurface.Thedouble-crystalx-raydiffractionpatternsshowthatthelatticeconstantof(Ga,Mn)Asdecreaseswithincreasingannealingtemperature.Asaresult,theannealinginducedreductionofthelatticeconstantismainlyattributedtoremovalofMninterstitial.

简介：Thispaperpresentsanoveltransformermagneticbiasingcontrolmethodforhigh-powerhigh-performanceACpowersupplies.Seriousconsequencesduetomagneticbiasingandseveralmethodstoovercomemagneticbiasingarefirstdiscussed.Thecausesofthetransformermagneticbiasingarethenanalyzedindetail.Theproposedmethodisbasedonahigh-passfilterinsertedintheforwardpathandthefeedforwardcontrol.Withouttestingmagneticbiasingoftransformer,thismethodcaneliminatemagneticbiasingoftransformercompletelyinreal-timewaveformfeedbackcontrolsystemsthoughtheaeroerroroftheHalleffectsensorsvarieswithtimeandtemperature.Themethodhasalreadybeenemployedina90KVAACpowersupply.Itisshownthatitoffersimprovedperformanceoverexistingones.Inthismethod,nosensorsareusedsuchthatthezeroerroroftheHalleffectsensorshasnotanyinfluenceonthesystem.Itissimpletodesignandimplement.Furthermore,themethodissuitableforvariouspowerapplications.

简介：Themixedmatrixmembranes(MMMs)weredevelopedbyincorporatinggraphiteoxide(GO)flakesfunctionalizedwithironoxide(Fe3O4)intoPebaxmatrix.ThePebax/Fe3O4-GOMMMswereusedtoseparateCO2/CH4andCO2/N2gasmixture.TheresultsshowedthattheMMMswithmagneticalignmentpresentedthebettergasseparationperformancethanthatofrandomarrangementofPebax/Fe3O4-GOmixedmatrixmembranes.ThereasonwasthattheFe3O4-GOflakesarrangedmagneticallyinthemembraneplayedamultipleroleinimprovingtheperformanceofMMMs.Firstly,undertheactionofthemagneticfield,themagneticalignmentofFe3O4-GOflakesinPebaxmatrixconstructedtheshortertransferpathforgasmolecule,increasingtheCO2permeability.Secondly,thehydroxylgroupsinGOflakesandthepresenceofFe3O4havestrongerbindingforceforwater,improvingtheCO2solubilityselectivity.Thirdly,thebetterinteractionbetweenthemagneticalignmentofGOcompositesandpolymermatrix,reducedtheinterfacedefects.Especially,theoptimumgasseparationperformsneewasobtainedattheFe3O4-GOflakescontentof3wt%inPebaxmatrixatverticalarrangementwithselectiv让yof47and75forCO2/CH4andCO2/N2,respectively,andCO2permeabilityof538Barrerat0.2MPaandroomtemperature.

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简介：Inthiswork,laserinducedtungstenplasmahasbeeninvestigatedintheabsenceandpresenceof0.6Tstatictransversemagneticfieldatatmosphericpressureinair.Thespectroscopiccharacterizationoflaserinducedtungstenplasmawasexperimentallystudiedusingspace-resolvedemissionspectroscopy.Theatomicemissionlinesoftungstenshowedasignificantenhancementinthepresenceofamagneticfield,whiletheionicemissionlinesoftungstenpresentedlittlechange.Temporalvariationoftheopticalemissionlinesoftungstenindicatedthattheatomicemissiontimeinthepresenceofamagneticfieldwaslongerthanthatintheabsenceofamagneticfield,whilenosignificantchangesoccurredfortheionicemissiontime.Thespatialresolutionofopticalemissionlinesoftungstendemonstratedthatthespatialdistributionofatomsandionswereseparated.Theinfluenceofamagneticfieldonthespatialdistributionofatomswasremarkable,whereasthespatialdistributionofionswaslittleinfluencedbythemagneticfield.Thedifferentbehaviorsbetweenionsandatomswithandwithoutmagneticfieldinairwererelatedtothevariousatomicprocessesespeciallytheelectronsandionsrecombinationprocessduringtheplasmaexpansionandcoolingprocess.

简介：Theobservedlossrateofbothparticlesandenergyfromhotconfinedtoroidalplasmasismuchhigherthantheonepredictedbyneoclassicaltransporttheory,whichdependsuponmeanplasmaparametersandCoulombcollisions.Manytypesofplasmaturbulencehavebeenproposedtoexplainanomalousplasmatransport.Thefluctuationofplasmaparametersaroundtheirmeanvaluescancausetransportthroughelectrostaticormagneticfluctuations.Thefluctuationdrivenradialparticlefluxisgivenby

简介：Inthispaper,thebasicequationsoftwo-phaseliquidmetalflowinamagneticfieldarede-rived,andspecifically,two-phaseliquidmetalMHDflowinarectangularchannelisstudied,andtheexpres-sionsofvelocitydistributionofliquidandgasphasesandtheratioK0ofthepressuredropintwo-phaseMHDflowtothatinsingle-phasearederived.ResultsofcalculationshowthattheratioK0issmallerthanunityanddecreaseswithincreasingvoidfractionandHartmannnumberbecausetheeffectiveelectricalconduc-tivityinthetwo-phasecasedecreases.

简介：这研究被奉献给磁性的过滤和方法的不同特征的解释这些特征影响重要过滤参数。在毛孔和磁性的粒子和包装的床的磁化性质上的这些地的力量效果的磁场铁磁性的范围创作了，金属薄片被评估。累积的侧面和粒子的俘获区域，在这些区域和粒子俘获半径的分析表情的液体速度的变化被介绍。磁性的过滤器性能上的过滤政体参数的效果被调查。一个分析表达式在过滤速度，过滤器元素的几何学，粒子尺寸和过滤的另外的参数上为对数的效率系数的依赖被获得了。磁性的过滤过程的静止、非静止的方程被给。磁性的过滤器性能的一个表达式被显示出，无尺寸的参数从过滤系统获得了。这些关系为在设计实践的计算是有用的，包括过滤器操作的磁性的过滤器，在建设的建议的预备，和优化和控制的设计。

简介：破裂和劈开实验的一个特征是他们通常是内在地破坏的。裂缝完全不在一个不着重的系统愈合，甚至在象云母那样的晶体。这里，我们使用了为非破坏性的劈开和易碎的破裂实验由磁性的脱衣组成的磁性的固体。在磁性的脱衣之间，有不同机械特征的材料能被插入，例如特氟隆重或泡沫脱衣，到变化固体的机械性质。为劈开实验，我们开发了象主要深奥力量那样的参数能容易被测量的一台仪器。由插入缺陷，磁性的固体能在动态破裂实验被使用，与肉眼可见地模仿以一个更容易的方法的一个非破坏性的实验的优点，与高得多的速度发生在真实材料。仪器和使用的磁性的固体可能为在班上的破裂的示范是有用的。

简介：Metaltransferisanimportantphenomenoninmetalinertgas(MIG)arcweldingwithlongitudinalalternatingmagneticfield.Itisofgreatsignificancetoobservethemetaltransfermodesunderdifferentexcitatorycurrentsandfrequencies.However,itisverydifficulttoviewthemetaltransferprocessdirectlyduringwelding,duetothestronginterferencefromthearclight.Toobtaintherelationshipbetweenthemetaltransfermodesandthedifferentmagneticfields,ahigh-speedvideocamerawasusedtoacquiretheimagesofglobules.Differentmetaltransfermodesundertheconditionsofdifferentmagneticfieldsandweldingparameterswerestudied.Theexperimentshowsclearimagesofdroplettransferaswellasinfluenceoflongitudinalmagneticfieldonbothmetaltransferandglobuleshape.

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简介：TheuseofabackgroundplasmainadielectricCherenkovmasercaneffectivelyincreasetheefficiencyandthemicrowaveoutputpowerofthedevice.Here,theeffectofthelongitudinaluniformmagneticfieldonthewave-beaminteractionoftheplasma-filleddielectricCherenkovmaserisexaminedbysolvingthebeam-plasma,dielectriclinedwaveguidedispersionequation.Andtheeffectsofthelongitudinalmagneticfield,plasmadensityanddielectricparametersonthelinearspatialgrowthrateandtheenergyratioarepresented.