简介：

简介：

简介：Inducedembryonicstemresourcesfortheobservationofthecell（ES）cellsareexpectedtobepromisingcellbehaviorsindevelopmentalbiologyaswellastheimplantationincelltreatmentsinhumandiseases.ArecombinantE-cadherinsubstratumwasdevelopedasacellrecognizablesubstratumtomaintaintheEScells＇self-renewalandpluripotencyatsinglecelllevel.Furthermore,thegenerationofvariouscelllineagesindifferentgermlayers,includinghepaticorneuralcells,wasachievedonthechimericproteinlayerpreciselyandeffectively.Theinductionandisolationofspecificcellpopulationwascarriedoutwiththeenhancingeffectofotherartificialextracellularmatrices（ECMs）inenzyme-freeprocess.ThemurineEScell-derivedcellsshowedhighlymorphologicalsimilaritiesandfunctionalexpressionstomaturedhepatocytesorneuralprogenitorcells.

简介：美国麻省理工大学和哈佛大学达纳一法伯癌症研究所、布罗德研究所合作，利用RNA介入（RNAi）方法开发出一种RNA递送纳米粒子系统，能大大加快筛选抗癌药物标靶进程。

简介：Thecounterelectrode(CE)prominenceindye-sensitizedsolarcells(DSSCs)isundisputedwithresearchgearedtowardsreplacementofPtwithviablesubstituteswithexceptionalconductivityandcatalyticactivity.Herein,wereportthereplaceableCEwithbetterperformancethanthatofPt-basedelectrode.ThechemistrybetweenthegrapheneoxideandicetemplatesleadstocellularformationofreducedgrapheneoxidethatachievesgreaterconductivitytotheCE.Thesimultaneousgrowthofactiveedge-orientedMoS2ontheCEthroughCVDpossesseshighreflectivity.HighreflectiveMoS2trendstoincreasetheelectroactivitybyabsorbingmorephotonsfromthesourcetodyemolecules.Thus,thesynergisticeffectoftwomaterialswasfoundtoshowcasebetterphotovoltaicperformanceof7.6%against7.3%fortraditionalplatinumCE.

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

简介：Sodiumparanitrophenolatedihydrate(NPNa·2H2O)isanexcellentsemiorganicnonlinearoptical(NLO)material,crystallizesbothinwaterandmethanolwithhighdegreeoftransparency.Goodopticalqualitysinglecrystalsofdimensionupto18mmx6mmx3mmareobtainedbyisothermalsolventevaporationtechnique.Thesolubilityofthecrystalindifferentsolventswasmeasuredgravimetrically.ThesinglecrystalsofNPNa·2H2Oshowvariationinphysicalpropertiesandgrowthrateindifferentsolvents.Methanolorethanolsolutionyieldscrystalsofbipyramidalshapewithclearmorphology.However,methanolgrowncrystalisexhibitingimprovedhardnessparametersandpossessesexcellentthermalstabilityascomparedtowatergrowncrystals.TheeffectsofsolventonhardnessparameteralongwiththermalandopticalpropertiesofNPNa·2H2Owasrevealedinthispaper.

简介：Anitrate-citratecombustionroutetosynthesizeLa0.9Sr0.1Ga0.8Mg0.2O3-δpowderforsolidoxidefuelcellapplicationwaspresented.Thisrouteisbasedonthegellingofnitratesolutionsbytheadditionofcitricacidandammoniumhydroxide,followedbyanintensecombustionprocessduetoanexothermicredoxreactionbetweennitrateandcitrateions.TheoptimumtechnicalparametersarethatthepHvalueis5,andthemolarratioofcitricacidtothetotalmetallicionis1.5:1.X-raydiffractioncharacterizationofcalcinedgelshowsthatpurephasewassynthesizedaftercalcinationat1400℃for10h,andtheTEMresultshowsthecalcinedpowderwithaverageparticlesizeisabout150nm.Thegrainresistancecontributestothetotalresistanceofsinteredpelletbelow500℃.Theconductivityofthesinteredpellentat800℃was0.07S-1.cm-1higherthantheconductivityofYSZ(0.05S-1.cm-1at800℃)