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简介：因为stabilizer是被看到的，新奇水溶性的做Mn的CdTe/ZnS核心壳量的合成点使用一个建议超声的助理方法和3-mercaptopropionic酸(MPA)。获得高光的紧张，包括pH价值，反应温度，倒流时间和空气，preparative以后处理被调查了。为做Mn的CdTe/ZnS的优秀荧光，最佳的条件是pH11，倒流温度100慣?慰慲敭整獲漠?敫潴??戠瑯?湩瘠捡潵愠摮愠畱潥獵猠汯瑵潩吗？

简介：描述表面在nanocrystals熄灭孤立的离子中心的一个模型基于在做的离子和熄灭中心的nanocrystalline表面之间的精力转移被建议。熄灭的率在nanocrystal取决于离子的位置，在非选择的刺激下面的因此腐烂曲线通常是非指数的。与这个模型一起计算的腐烂曲线在对T-4(1)的好同意>(6)在ZnS的A(1)排放:Mn2+nanocrystals。

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。

简介：硅钙合金是一种炼钢脱氧剂，其中若存在游离硅、二氧化硅杂质会影响炼钢脱氧效果，目前国家标准无硅钙合金中游离硅分析方法。研究了氢氧化钠溶液提取非合金相硅的条件，用硅钼蓝光度法分析硅含量，分析方法回收率达95．9％，可用于硅钙合金中非合金相硅测定。

简介：Anovelread-onlysuper-resolutionopticaldiscstructure(substrate/masklayer/dielectriclayer)ispropsedinthispaper.ByusingaSithinfilmasthemasklayer,therecordingpitswithadiameter380nmandadepth50nmarereadoutonthedynamicmeasuringequipment;thelaserwavelengthλis632.8nmandthenumericalapertureis0.40.IntheoftheSithinfilmis18nmandthesignal-to-noiseratiois32dB.

简介：Ｂｉｎａｒｙ　Ｒｅａｃｔｉｏｎ　Ｍｅｃｈａｎｉｓｍ　ｏｆ　２８Ｓｉ＋２４Ｍｇ　ａｔ　１５６．３　ＭｅＶＢｉｎａｒｙＲｅａｃｔｉｏｎＭｅｃｈａｎｉｓｍｏｆ２８Ｓｉ＋２４Ｍｇａｔ１５６．３ＭｅＶ￥ＷａｎｇＳｈｕｆａｎｇ；ＪｉｎＧｅｎｍ...

简介：研究了在盐酸介质中,三价铁离子能将盐酸氯丙嗪氧化成一种红色的物质,且氧化的程度与盐酸氯丙嗪的量呈正比关系,据此建立了测定盐酸氯丙嗪的分光光度分析方法。实验中最大吸收波长为530nm,摩尔吸光系数为5.13×103L/（mol·cm）,盐酸氯丙嗪的量在5-250μg/10mL范围内与吸光度A有良好的线性关系,方法用于盐酸氯丙嗪药物的测定,其相对标准偏差为0.11%-0.19%,加标回收率为95.0%-97.0%。

简介：HighactiveandstablegoldcatalystssupportedoncrystallineFe2O3andCeO2/Fe2O3werepreparedviathedeposition-precipitationmethod.ThecatalystwithaAuloadof1.0%calcinedat180°CshowedaCOconversionof100%at-8.9°C,whileAu/CeO2/Fe2O3convertedCOcompletelyat-16.1°C.Evenhavingbeencalcinedat500°C,Au/Fe2O3stillexhibitedsignificantcatalyticactivity,achievingfullconversionofCOat61.6°C.ThecatalystwithalowAuloadof0.5%couldconvertCOcompletelyatroomtemperatureandkepttheactivityunchangedforatleast150h.N2adsorption-desorptionmeasurementsshowthatthecrystallinesupportspossessedahighspecificsurfaceareaofabout200m2/g.CharacterizationsofX-raydiffractionandtransmissionelectronmicroscopyindicatethatgoldspecieswerehighlydispersedasnanoorsub-nanoparticlesonthesupports.Evenafterthecatalystwascalcinedat500°C,theAuparticlesremainedinanano-sizeofabout6―10nm.X-rayphotoelectronspectrarevealthatthesupportedAuexistedinmetallicstateAu0.ThemodificationofAu/Fe2O3byCeO2provedtobebeneficialtotheinhibitionofcrystallizationofFe2O3andthestabilizationofgoldparticlesindispersedstate,consequentlypromotingcatalyticactivity.

简介：最近，陈和他的队在为太阳能的使用的新日光反射装置的理论、实际的学习是活跃的。这个工作在很少进步的许多年以后在日光反射装置的区域代表第一革新。技术的追踪和集中光学原则的数学发展，和实际实现和示范，两个都是这个领域里的很有趣的进展。许多应用程序为象太阳的电和太阳的工业进程热的产生那样的这种技术是可能的。

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简介：Wereportthestudyofalowtemperatureclusterglassstatein5%Mn-dopedUGa3heavyfermioncompound.Thiscompoundtransformsfromaparamagneticstatetoaspin-clusterglassstate,whichisconfirmedbymeasuringthedcsusceptibilityandmagnetization.Theacsusceptibilityexhibitsafrequency-dependentpeakaroundTf,whichprovidesdirectevidenceoftheclusterglassstate.Byanalyzingthefield-dependentmagnetizationandfrequency-dependentacsusceptibilityindetail,wededucethatthiscompoundformsaspin-clusterglassstatebelowTf.

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简介：WehavestudiedtheinterfacialstructuresofAlN/Si(111)grownbymetal-organicchemicalvapourdeposition.X-rayphotoelectronspectroscopyandAngerelectronspectroscopywereusedtoanalysethecomponentsandchemicalstructuresofAlN/Si(111).Theresultsindicatedthatamix-crystaltransitionregion,approximately12nm,waspresentbetweentheAlNfilmandtheSisubstrateanditwascomposedofAlNandSi3N4.AfteranalysiswefoundthattheexistenceofSi3N4couldnotbeavoidedintheAlN/Si(111)interfacebecauseofstrongdiffusionat1070℃.EveninAlNlayerSi-Nbonds,Si-Sibondscanbefound.

简介：N-ZnO/p-Si异质接面被内在的ZnO电影的劈啪作响的免职在希腊语的第二十三个字母底层上准备。ZnO电影的厚度被从1h改变免职时间到3h改变。这些结构的电的性质从电容电压(C-V)被分析并且当前电压(I-V)特征表现在一个黑暗房间里。结果证明所有样品显示出强壮的修正行为。为有ZnO电影的不同厚度的样品的光电的性质被测量开的电路电压和短路电流调查。相片电压被坚守，这被发现当光电流变化时，与厚度一起的320mV几乎不变很多。ZnO电影的厚度的功能被调查的光电的效果的变化机制。

简介：ThepartialoxidationofethanoltohydrogenwasinvestigatedoverNi/Fe/Lacatalystspreparedbytheco-precipitationmethod.TheeffectsofintroductionofLapromoterandthereactiontemperatureonthecatalyticperformancewerestudied.ItwasfoundthattheintroductionofLaintoNi/Fecatalystsishelpfultoincreasetheselectivitytohydrogenandthestabilityofthecatalysts.TheresultsofXRDandXPScharacterizationshowthatthestructureofthecatalystwaschangedduringthereaction.TheexistenceofLaFeO3speciesispossiblythemainreasonoftheincreaseofthecatalyststability.

简介：Thediffusionmechanismofboroninbcc-Fehasbeenstudiedbyfirst-principlescalculations.Thediffusioncoefficientsoftheinterstitialmechanism,theB–monovacancycomplexmechanism,andtheB–divacancycomplexmechanismhavebeencalculated.ThecalculateddiffusioncoefficientoftheinterstitialmechanismisD0=1.05×10-7exp（-0.75eV/kT）m2·s-1,whilethediffusioncoefficientsoftheB–monovacancyandtheB–divacancycomplexmechanismsareD1=1.22×10-6f1exp（-2.27eV/kT）m2·s-1andD2≈8.36×10-6exp（-4.81eV/kT）m2·s-1,respectively.Theresultsindicatethatthedominantdiffusionmechanisminbcc-Feistheinterstitialmechanismthroughanoctahedralinterstitialsiteinsteadofthecomplexmechanism.ThecalculateddiffusioncoefficientisinaccordancewiththereportedexperimentresultsmeasuredinFe–3%Si–Balloy（bccstructure）.Sincethenon-equilibriumsegregationofboronisbasedonthediffusionofthecomplexesassuggestedbythetheory,ourcalculationreasonablyexplainswhythenon-equilibriumsegregationofboronisnotobservedinbcc-Feinexperiments.

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简介：Uniformlysizedα-Fe2O3hexagonalplateletsweresynthesizedbyahydrothermalprocessusingFe(OH)3suspensionandlargeamountofNaOH.ThereactionproductswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),selectedareaelectrondiffraction(SAED),andavibratingsamplemagnetometer(VSM).Theresultsshowthatthehexagonalplateletsarefine,monodisperseandconsistingofsingle-crystals.Themagnetichysteresis(M-H)curveofthesamplesmeasuredatroomtemperatureindicatesthattheα-Fe2O3micro-plateletsexhibitferromagneticbehaviorswithrelativelylowcoercivity.

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