简介：ThedetailedmicrostructuresofNi80Fe20/Fe50Mn50superlatticeshavebeencharacterizedusingbothx-raydiffractiontechniquesandtransmissionelectronmicroscopy.Theobrivouslayeredstructure,typicalcolumnstructureandtwinswhichexistinNi80Fe20/Fe50Mn50superlatticeswereobservedthroughperformingtransmissionmicroscopy.Bycombiningthetechniqueoflowanglex-rayreflectivity(specularandoff-specularscans)withtheanomalousscatteringeffectandhigh-anglex-raydiffraction(usingconventionalx-ray),wequantitativelyanalysedthemicrostructuralvariationasafunctionofannealingtemperature.Itisfoundthatthelateralcorrelationlength,the(111)peakintensityofthesuperlatticesandtheaveragemultilayercoherencelengthallincreasewithariseinannealingtemperatureannealingcandecreasetherootmean-squareroughnessattheinterfacesofNi80Fe20/Fe50Mn50superlattices.theobtainedmicrostructuralknowledgewillbehelpfulinunderstandingthemagneticpropertiesoftheni80Fe20/Fe50Mn50exchangebiassystem.

简介：介绍了一种改进型钢弦驻波实验装置

简介：用机械合金化方法制备了(FeAl3)75Zr25和(FeAl3)50Zr50非晶态合金,用X射线衍射仪和热分析仪对制备的非晶态合金的结构特性及热稳定性进行了研究,用振动样品磁强计对(FeAl3)75Zr25和(FeAl3)50Zr50混合粉末在机械球磨过程中的磁性变化进行了研究,并对其晶化产物及其晶化后合金的磁性进行了分析。结果表明:(FeAl3)75Zr25的晶化产物为Fe3Zr和Al1.65Fe0.33Zr;(FeAl3)50Zr50非晶态合金的晶化产物为FeZr2和AlZr2。(FeAl3)75Z

简介：我们第一建议并且示威能与150mm的一种横梁尺寸改正petwattTi:sapphire激光系统的波前的一条新节俭的途径。由与50mm使用一面可变形的镜子活跃的孔最后激光，焦点的点尺寸有效地被减少。试验性的结果证明新途径从一个技术、节俭的点简单、更少昂贵、有效。这种技术能被使用与一个更小的孔改正一根大光横梁的波前可变形的镜子。

简介：

简介：

简介：Variousagriculturalcropresiduesincludingcornstover,corncob,andsorghumstalkwithamoisturecontentof75wt%weresubjectedtoalongpretreatment(12-60h)withsupercriticalCO2(scCO2),atlowtemperature(50-80℃)andapressureof17.5-25.0Mpa.Thesugaryieldsfromtheenzymatichydrolysis(EH)ofthepretreatedsampleswereasmuchasthree-tofourfoldgreaterthanthoseaffordedbytherawmaterials.However,whenpretreatmentwasconductedwithinashorttime(e.g.0.5h),aspreviouslyreportedintheliterature,onlyaslightincreaseintheEHsugaryieldswasobserved.TheproposedscCO2pretreatmentmechanismdemonstratedtheroleofmoistureinthesystem.Wetting,softening,andswellingwereobservedtomainlyaffectthelignocellulosewhenasuitableamountofwaterwasadded.Finally,thesampleswereanalysedbyX-raydiffractionandscanningelectronmicroscopy,beforeandafterpretreatment,toinvestigatethechangesinthemicroscopicstructureofthebiomass.

简介：ＥｘｐｅｒｉｍｅｎｔａｌＭｅａｓｕｒｅｍｅｎｔｓｏｆＮｅｕｔｒｏｎＤｉｓｔｒｉｂｕｔｉｏｎｓｉｎ５０ＭｅＶ／ｕ１８Ｏ＋Ｂｅ，ＣｕａｎｄＡｕＲｅａｃｔｉｏｎｓ￥ＬｉＧｕｉｓｈｅｎｇ；ＺｈａｎｇＴｉａｎｍｅｉ；ＬｉＺｏｎｇｗｅｉａｎｄＳｕＹｏｕｗｕ?..

简介：Intrinsicapoptosis,apossibleresponsetomitochondrialdamage,inMDA-MB-231cellsexposedtodifferentdosesofcarbonionswasinvestigatedinthisstudy.WeassessedBaxandBcl-2expressionandcytochromecreleaseinthemitochondriaandcytosolofcellsexposedtolow(0.5Gy)andhigh(3Gy)dosesofcarbonionsusingwesternblotanalysis.

简介：ＲｅｃｏｉｌＲａｎｇｅｓｏｆＮｅａｒ－ｔａｒｇｅｔＰｒｏｄｕｃｔｓｆｒｏｍ５０ＭｅＶ／ｕ１８Ｏ＋１９７Ａｕ￥ＹａｎｇＹｏｎｇｆｅｎｇ；ＺｈａｏＺｈｉｚｈｅｎｇ；ＬｉＺｏｎｇｗｅｉ；ＺｈｕＳｈａｏｆｅｉ；ＣａｔＸｉｃｈｅｎｇ；Ｙａ...

简介：ＡｃｔｉｖａｔｉｏｎＭｅａｓｕｒｅｍｅｎｔｓｏｆＮｅｕｔｒｏｎＤｏｓｅＥｑｕｉｖａｌｅｎｔＲａｔｅｓｉｎ５０ＭｅＶ／ｕ￣（１８）Ｏ－ｉｏｎＴａｒｇｅｔＡｒｅａ￥ＬｉＧｕｉｓｈｅｎｇ；ＺｈａｎｇＴｉａｎｍｅｉ；ＬｉＺｏｎｇｗｅｉａｎｄＳｕＹｏｕｗｕＮｅ...

简介：我们在Mn50Ni40SnSbx(x=1，2，3，和4)合金。所有准备样品在房间温度与空间组一起展出B2类型结构。Sb的替换增加原子价电子集中并且减少联合起来的房间体积。作为结果，当x增加，magnetostructural转变向更高的温度很快变。在在不同磁场变化下面的磁性的熵的变化在这转变附近被探索。等温的磁化曲线展出典型metamagnetic行为，显示magnetostructural转变能被一个磁场导致。悦耳的martensitic转变和磁性的熵变化建议那Mn50Ni40SnSbx合金是应用在的吸引人的候选人固态制冷。