简介：~~《云南乡土百姓》@黄国强

简介：PositronannihilationbehaviorshavebeenstudiedinthesinglephaseNd2Fe14BmagnetandthenanocompositeNd2Fe14B/α-Femagnet,preparedbymeltspinning.Theresultsshowedthatthenumberofvacancy-clusteratgrainboundariesincreaseswithincreasingannealingtemperatureforthebothtypesofmagnets.Theincreaseofthiskindofdefectcanimprovethecoercivityof

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简介：~~女人·摄影·女人云南·贵州农村少数民族妇女摄影展

简介：MoleculardynamicssimulationusingauniversalforcefieldhasbeenemployedtodeterminethediffusioncoefficientsofO2andNa2SO4vaporintoB2O3andSiCfrom700Kto1273K,respectively.Einsteindiffusionwasobservedina250～300pssimulation.ThediffusioncoefficientfortheO2rangefromabout9.279×10-9cm2/sforB2O3to2.275×10-10cm2/sforSiCataloadingof32moleculespersimulationbox,thatfortheNa2SO4vaporrangefromabout9.888×10-7cm2/sforB2O3to1.837×10-10cm2/sforSiCataloadingof8moleculespersimulationbox.EnvironmentpropertiesofC/SiCcompositewillbeincreasedviatheB2O3preventingthediffusionofO2andNa2SO4vaporintothepyrolyticinterphaseandcarbonfibers.

简介：ExperimentswerecarriedouttostudytheinfluenceofsurfaceconditiononexpulsionduringthespotweldingofAZ31BMgalloy.AgeneralelectricalcontactresistancetheoryforconductiveroughsurfacesandtherelationbetweenmaximumtemperatureTminthecontactandvoltage-dropVacrossinterfaceoftwosurfaceswereemployedtounderstandthereasonofexpulsioninMgalloyspotwelding.Themainreasonofexpulsionisthatthehighelectricalcontactresistanceinducedbylargeroughnessofthesurfaceandoxidefilmcoveredonthesurfaceleadstolocalmeltingofmetalintheinterfaceoftwosurfaces,andliquidmetalofthelocalareaejectedfromthespecimenunderelectrodeforceformsexpulsion.

简介：ItwasshownbyTEMandX-rayanalysisthatNi3AlisthemainphaseoftheintermetallicsynthesizedundercompressionfromthepowdermixtureofNiwithAlalloyedbyB.TheNi3Bisasecondaryphase.ThevalueofthelatticeparameteroftheintermetallicNi3AlwithandwithoutBincreaseswhentheconcentrationofAlincreases.TheincreaseinAlconcentrationfrom23.5to25.0intheinitialpowdermixtureleadstodecreasingthesolubilityofBintheNi3Alphase.

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简介：为stoichiometric作文的nanocrystallineNd-Fe-B磁铁的demangetization曲线被使用微磁力的有限元素技术计算。曲线，特别iHc随N.The很小的iHc的增加变得更小从一系列沿着不同的地方向的曲线为N=∞接近那。iHc随L的增加增加，并且是什么的靠近的cr一些比小试验性的价值应该是。

简介：1.IntroductionSofarthemicrostructureandcoercivityofSm（Co,Cu,Fe,Zr）7.4alloyhavebeenstudiedindetailbyvariousauthors.TheeffectofZr-richlaminarphasestructureonthehighcoecivityofalloyismoreattractive.Thechangesofmagnetic

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简介：与铽做的硅石和硼硅石玻璃材料器官的建筑群被准备由在situ大音阶的第五音胶化方法分别地。XRD和SEM大小被执行验证玻璃的非结晶的结构。玻璃的结构和做的Tb(III)离子的精力水平上的玻璃内容的影响被排放系列和红外系列分析。稀土元素的photolumi-nescertee性质上的B_2O_3的效果在硅石的器官的建筑群--基于的玻璃被调查。红外系列显示在原处综合的稀土元素复杂分子被限制，到主人的微毛孔，ligands的颤动被冻结。当B_2O_3被增加进硅石主人胶化时，B_2O_3几乎没在玻璃，和BO_3三角的非结晶的结构上有小影响，它有与硅石框架不同的层结构，能形式。硅石网络因此成为了尘埃不均匀，并且铽建筑群的光随B_2Opercent数量的增加被熄灭。

简介：TheantibacterialeffectofcarryingsilverB2O3-SiO2-Na2Oglassmaterialwasstudiedbymeansofantibacterialring,nephelometery,MICvalue,thinfilmattachmentandmicrocalorimetry,respectively.TheexperimentalresultsoffivekindsofantibacterialtestmethodsarealmostidenticalandcanverifythatcarryingsilverB2O3-SiO2-Na2Oglassmaterialexertsanexcellentantibacterialperformance.Antibacterialringandnephelometeryaresimple,quick,buttheprecisionisrestrictive.MICvalue,thinfilmattachmentmethodandmicrocalorimetrycanquantitativelycomparetheantibacterialeffectsoftheantibacterialglassmaterial.Comparedwiththetraditionalmicrobetestmethods,themicrocalorimetrycananalyzetheinhibitingeffectofthecell'sgrowthandmetabolismontheantibacterialglassmaterialbymonitoringthethermaleffectcontinuouslyandautomatically.

简介：FFS袋用吹塑薄膜是国内近年来刚刚发展起来的一种重包装膜产品：主要用于大型聚乙烯、聚丙烯等合成树脂等化工原料及建筑材料的自动包装线。由于在包装过程中．实现了多道工序和作业过程的连续自动一次完成，使包装速度大大提高，满足超大型合成树脂装置高速包装的需要。FFS袋的包装能力：1700—1900袋／h；复合编织袋包装能力：〈1400袋／h，单线年最大包装量在1150万条，

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简介：TiB2ceramicspowderwassynthesizedfromB2O3-TiO2-Mgsystem.TheeffectsofTiB2additionasdiluentonthecombustionsynthesisprocesswereinvestigated.TheresultsofthermodynamiccalculationandexperimentsshowthattheincreaseofTiB2contentrangingfrom0to20wt%canreducetheadiabatictemperatureTadfrom3100Kto2896KandcombustiontemperatureTcfrom2139Kto1621Krespectively.TheparticlesizeandhalfwidthoftheparticledistributionarealsoincreasedwiththeadditionofTiB2increasingfrom0to20wt%.ThecombustionproductisamixtureofTiB2,MgO,andotherintermediatephases.TheleachedproductcontainsmainlyTiB2,TiO2andTiN,anditsoxygencontentis7.77wt%.

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简介：Throughmeasuringthecoefficientoflinearexpansion,thestructureandpropertiesoftheLi2O-Al2O3-SiO2lowexpansionglassceramicscontainingB2O3arestudiedbyJRandXRD.ItisshoutnthattheIRmethodisefficientinthestudyoftheglass-ceramicsstructure.Thereisa"Boronabnormality"inthesystemwhichhasanimportantinfluenceonthepropertiesoftheglass-ceramics.