简介：BaotouPulite's3,000-tonrareearthmetalsandalloysprojectstartedconstructionrecently.Theproject,withatotalinvestmentof100millionyuan,islocatedinBaotouJiuyuanIndustrialPark,coveringanareaof40mu.ItisexpectedtobeputintoproductioninSeptember2019.

简介：AIM:Toconstructfunctionalhumanfull-thicknesscornealreplacements.METHODS:Acellularporcinecornealmatrix(APCM)wasdevelopedfromporcinecorneabydecellulariztion.Thebiomechanicalpropertiesofanterior-APCM(AAPCM)andposterior-APCM(PAPCM)werecheckedusinguniaxialtensiletesting.Humancornealcellswereobtainedbycellculture.Suspendingringwasdesignedbydeformationofanacupunctureneedle.MTTcytotoxicityassaywasusedtocheckthecytotoxicityofsuspendingringsoakingsolutions.Anewthree-dimensionalorganculturesystemwasestablishedbycombinationofsuspendingring,48-wellplateandmediumtogether.Ahumanfull-thicknesscornealsubstitutewasconstructedfromhumancornealcellswithAAPCMinanorgancoculturesystem.Biochemicalmarkerexpressionoftheconstructwasmeasuredbyimmunofluorescentstainingandmorphologicalstructureswereobservedusingscanningelectronmicroscopy.Pumpfunctionandbiophysicalpropertieswereexaminedbypenetratingkeratoplastyandfollow-upclinicalobservations.RESULTS:TherewerenocellsintheAAPCMorPAPCM,whereascollagenfibers,Bowman’smembrane,andDescemet’smembranewereretained.ThebiomechanicalpropertyofAAPCMwasbetterthanPAPCM.HumancornealcellsgrewbetterontheAAPCMthanonthePAPCM.Therewasnocytotoxicityforthesuspendingringsoakingsolutions.Fortheconstructedfull-depthhumancornealreplacementskeratocytesscattereduniformlythroughouttheAAPCMandexpressedvimentin.TheepitheliallayerwaslocatedonthesurfaceofBowman’smembraneandcomposedofthreeorfourlayersofepithelialcellsexpressingcytokeratin3.OnelayerofendothelialcellscoveredthestromalsurfaceofAAPCM,expressedNa+/K+ATPaseandformedtheendotheliallayer.Theconstructwassimilartonormalhumancorneas,withmanymicrovilliontheepithelialcellsurface,stromalcellswithalongshuttleshape,andzonulaoccludensontheinterfaceofendothelialcells.Theconstructwithstoodsurgicalprocedu

简介：Thesuppressionoftherecombinationofelectronsandholes(e–h)andtheenhancementofthelightabsorptionofsemiconductorsaretwokeypointstowardefficientphotocatalyticdegradation.Here,wereportafew-layerg-C3N4/α-MoO3nanoneedles(flg-C3N4/α-MoO3NNs)all-solid-stateZ-schememechanismphotocatalystsynthesizedviaatypicalhydrothermalmethodinacontrolledmanner.Therecombinationofthephoto-inducede–hpairscouldbeeffectivelyrestrainedbytheZ-schemepassagewaybetweentheflg-C3N4andα-MoO3NNsinthecomposite,whichcouldalsopromiseahighredoxabilitytodegradepollutants.Anditbecamepossibleforthepreparedphotocatalysttoabsorblightinawiderangeofwavelengths.Thedetailedmechanismwasstudiedbyelectronspin-resonancespectroscopy(ESR).Thelow-dimensionalnanostructureofthetwoconstituents(α-MoO3NNswithone-dimensionalstructureandflg-C3N4withtwo-dimensionalstructure)endowedthecompositewithvarietiesofexcellentphysicochemicalproperties,whichfacilitatedthetransferanddiffusionofthephotoelectronsandincreasedthespecificsurfaceareaandtheactivesites.The10wt%flg-C3N4/α-MoO3NNsshowedthebestphotocatalyticperformancetowardRhBdegradation,therateofwhichwas71.86%,~2.6timeshigherthanthatofα-MoO3NNs.