简介：Inthispaper,thedensityfunctionaltheoryhasbeenusedtoperformacomparativetheoreticalstudyofwatermonomer,dimer,trimer,andbilayeradsorptionsontheBe(0001)surface.Inourcalculations,theadsorbedwatermoleculesareenergeticallyfavouredadsorbedontheatopsites,andthedimeradsorptionisfoundtobethemoststablewithapeakadsorptionenergyof～437meV.Furtheranalyseshaverevealedthattheessentialbondinginteractionbetweenthewatermonomerandthemetalsubstrateisthehybridizationofthewater3a1-likemolecularorbitalwiththe(s,pz)orbitalsofthesurfaceberylliumatoms.Whileinthecaseofthewaterdimeradsorption,the1b1-likeorbitaloftheH2Omoleculeplaysadominantrole.

简介：Theadsorptionofproteinonnanoparticleswasstudiedbyusingdynamiclightscatteringtomeasurethehydrodynamicsizeofbothpureproteinandnanoparticlesadsorbedwithdifferentamountsofprotein.Thethicknessoftheadsorbedproteinlayerincreasesasproteinconcentration,butdecreasesastheinitialsizeofnanoparticles.Afterproperlyscalingthethicknesswiththeinitialdiameter,weareabletofitallexperimentaldatawithasinglemastercurve.Ourexperimentalresultssuggestthattheadsorbedproteinsformamonolayeronthenanoparticlesurfaceandtheadsorbedproteinmoleculesareattachedtotheparticlesurfaceatmanypointsthroughapossiblehydrogen-bonding.Ourresultsalsoindicatethatasproteinconcentrationincreases,theoverallshapeoftheadsorbedproteinmoleculecontinuouslychangesfromaflatlayerontheparticlesurfacetoastretchedcoilextendedintowater.Duringthechange,thehydrodynamicvolumeoftheadsorbedproteinincreaseslinearlywithproteinconcentration.

简介：Theadsorptionofxenonfromairhasaninterestinthemonitoringofnuclearexplosionoraccident,orinthetreatmentofnuclearwastegas.Inthispaper,theporestructureofseveralseriesofactivatedcarbonfibershasbeencharacterized.Theadsorptionpropertiesofxenonontheseactivatedcarbonfibersunderdifferenttemperatureshavebeenstudiedindetails.Theresultsshowthatthexenonadsorptionamountonactivatedcarbonfibersdonotincreasewithspecificsurfaceareaofadsorbents,butarecloselyrelatedtotheirporesizedistribution.Poreswhoseradiusequaltoornarrowthan0.4nmwouldbemoreadvantageoustotheadsorptionofxenon.

简介：Objective:Tostudytheeffectofbio-derivedbones,assubstitutesofautogenousbonegraftsanddemineralizedcadaverbones,ontheattachment,spreadingandproliferationofisolatedosteoblasts.Methods:Osteoblastswereisolatedfromthecalvariaofafetalrabbitthroughsequentialcollagenasedigestion.Intheattachmentstudy,theosteoblastslabeledwith3H-leucinewereincubatedwiththebio-derivedbonematerialsinsterilemicrocentrifugaletubesfor15,90and180minutes,and24hours,respectively.Theattachedcellswerecollectedandtheradioactivitywasmeasuredwithliquidscintillationspectrometry.Intheproliferationstudy,theosteoblastswereculturedwiththebio-derivedbonematerialsfor24hoursand3H-thymidinewasaddedduringthelast2hoursoftheincubation.Theattachedcellswerecollectedandtheradioactivitywasmeasuredwithliquidscintillationspectrometry.Osteoblastswereseededonthebonegraftmaterialsfor60or120minutes,24or48hours,and3or7days,thentheco-culturewasprocessedforscanningelectronmicroscopytoobservetheinteractionofosteoblastsandthebio-derivedbonematerials.Results:Osteoblastsattachedtothebio-derivedbonematerialsinatime-dependentmanner.Thereweresignificantly(P<0.05)moreattachedcellsafter180minutesthanafter15and90minutesofincubations(P<0.05).Osteoblastswereproliferatedinalargeamountonthesurfaceandinthematerials.Osteoblastsseededonto100mgbio-derivedbonesresultedinsignificantly(P<0.05)moremeasurableproliferationthanthoseseededonto10mgbones.Osteoblastsappearedroundastheyattachedtothematerials,thenflattenedandspreadoverwithtimepassing.Conclusions:Bio-derivedbonescanprovideagoodenvironmentfortheattachmentandproliferationofosteoblasts.

简介：摘要目的探讨Bio-Oss联合Bio_GidePerio在修复牙槽突裂的临床护理。方法对我院2013年6月～2014年4月为20例齿槽突裂患者应用Bio-OssR天然骨无机材料及Bio-GideRPerio胶原膜修复齿槽突裂手术的护理总结。结果因护理措施得当，20例患者采用Bio-GideR修复牙槽突裂,术后观察,其中19例患者术后伤口均获一期愈合,口鼻瘘得以严密关闭。1例腭侧黏膜未愈合,局部涂擦盐酸米诺环素后伤口愈合良好1。结论Bio-OssR联合Bio-GideRPerio修复牙槽突裂具有良好的生物相容性,多孔状结构能为新骨生长提供良好的空间支架,对增强上颌骨的稳定性和连续性，改善牙槽嵴的高度和外形起重要作用2。而Bio-GideR骨膜是一种较低的抗原性和出色的生物相容性胶原膜,在牙槽突缺损部位具有引导组织再生功能及膜屏障和骨修复的双重作用，Bio-OssR联合Bio-GideRPerio更有利于牙槽突裂的骨再生及颌骨重建3。

简介：Inthispaper,theselectiveadsorptionofLDLonchitosanmodifiedwithPEGandAsp.wasstudied.TheadsorptionrateofLDLandHDLonthedoublemodifiedchitosanwas57%and12%respoectively,TheresultsshownthatthedoublemodifiedchitosancanbeusedaadsorbentforselectivebindingtoLDL,thisworkmayhelptodevelopfunctionalcolumnsforhemoperfusion.

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简介：StructuresofaseriesofactivatedcarbonfibersweremodifiedbyimpregnatingthemwithorganicandinorganicmaterialssuchasMethyleneblue(Mb)、p-nitrophenol(PNP)、NaClorbyoxidizingwithKMnO4orHNO3.Theinfluenceofporefillingorchemicaltreatmentontheirxenonadsorptionpropertieswasstudied.TheexperimentalresultsshowthatMbandPNPfillingofactivatedcarbonfibersresultinthedecreaseofxenonadsorptioncapacitiesofthesetreatedACFs,whichisduetothedecreaseoftheirsurfaceareaandmicro-porevolume.However,theadsorptioncapacityincreasesgreatlywithoxidizingtreatmentofactivatedcarbonfibersby7mol/LHNO3.

简介：Thefieldofmechanicsofbiologicalandbio-inspiredmaterialsunderwentanexcitingdevelopmentoverthepastseveralyears,whichmadeitstandatthecuttingedgeofbothengineeringmechanicsandbiomechanics.Asanintriguinginterdisciplinaryresearchfield,itaimsatelucidatingthefundamentalprinciplesinnature'sdesignofstrong,multi-functionalandsmartMaterialsbyfocusingontheassembly,deformation,stabilityandfailureofthematerials.Theseprinciplesshouldhavewideapplicationsinnotonlymaterialsciencesandmechanicalengineeringbutalsobiomedicalengineering.Forinstance,theknowledgeinMechanicalprinciplesofbiologicalmaterialsisveryhelpfulforaddressingsomemajorchallengesinmaterialsciencesandengineering.Theyalsohavethepotentialtoprovidequantitativeunderstandingabouthowforcesanddeformationaffecthumanbeing'shealth,diseasesandtreatmentattissue,cellularandmolecularlevels.

简介：吸附是为环境补习的最广泛地应用的技术之一。它的动力学意义大评估给定的吸附物和获得卓见的表演进内在的机制。有有关吸附动力学可得到的大量参考书，并且几个数学模型被开发了描述吸附反应和散开过程。然而，这些模特儿经常被雇用适合运动数据在一不合适或不适当举止。这主要是因为到可观的程度，联系模型的边界条件为数据建模被忽略。这里，我们考察了几使用得广泛地的吸附运动模型并且对他们的边界条件给予了更多的注意。我们相信评论为吸附某些意义和改进是运动建模。

简介：Investigationoftheadsorptioncharacteristicsoftolueneontwohypercrosslinkedresins.Thestaticandthekineticadsorptionwerestudied.Theequilibriumadsorptiondatewasfittedtofreundlichadsorptionisothermmodelstoevaluatethemodelparameters.Theenthalpy,freeenergy,entropyareindicativeofanexothermic,aspontaneousanddisorterdecreasingprocess.ExperimentalresultsshowthatthetwoadsorbentsarebetterthantheAmberliteXAD-4forremovingthetolueneinaqueoussolutions.

简介：Bothinorganicandorganicpillaredmontmorilloniteswereusedtoadsorbphenol.BatchkineticsandisothermstudieswerecarriedouttoevaluatetheeffectofequilibriumtimeandpHonadsorptionofphenolbymontmorillouitesandre-adsorbingcharacteristicsofpillaredmontmorillonites.TheadsorptionofphenolincreasedwithincreasingsolutionpHvalues.Theeliminationratioofphenolfromthesolutionbytheabsorptionoforganicmodifiedpillaredmontmorillonite(OrPMt)reachedequilibriumquicklyaftervibratingfor5minutes.Meanwhilefororganicmontmorillonite(OrMt),pillaredmontmorillouite(PMt)andmontmorillonite(Mt),thetimetoreachphenol-absorptionequilibriumwere20,30and90minutes,respectively.Theadsorbingcapacityofthepillaredmontmorillonitemodifiedwithsurfactantimprovedgreatly.Thephenol-adsorbingcapacityofpillaredmontmorillonitesmainlydependedonmicroporousstructureandsurfacecomponentofthemodifiedclays.Aftercalcinationat500℃,thepillarstructureandthebasalspacing(1.83nm)werestillstable.Sothepillaredmontmorillonitecouldberecycled,anditwasapotentialmaterialforadsorbingenvironmentalpollutants.

简介：Theadsorptionbehaviorofdyesonavarietyofsisalbasedactivatedcarbonfibers(SACF)hasbeenstudiedinthispaper.TheresultsshowthatthiskindofACFhasexcellentadsorptioncapacitiesforsomeorganic(dye)molecules.SACFcanremovenearlyallmethyleneblue,crystalviolet,bromophenolblueandEriochromeblueblackRfromwaterafterstaticadsorptionfor24h.at30℃.Theadsorptionamountscanreachmorethan400mg/gwhenadding50mgSACFinto50mldyesolution.Underthesameconditions,theadsorptionamountsofxylenolorangefluoresceinandEriochromeblackTwreelower.Ontheotherhand,theadsorptionamountschangealongwiththecharacteristicsofadsorbents.TheSACFsactivatedabove840℃,whichhavehigherspecificsurfaceareasandwiderporeradii,havehigheradsorptionamountsforthedyes.TheresearchingresultsalsoshowthattheadsorptionratesofdyesontoSACFsdecreasebytheorderofmethyleneblue,EriochromeblueblackRandcrystalviolet.

简介：TheapplicationofXzeoliteintheareasforproducingpara-xylenebyadsorptiveseparation,N2/O2separation,etc.,wasreviewed,andtheframeworkSiO2/Al2O3molarratio,thecationsandthewatercontentofXzeolitesignificantlyaffecteditsselectivityandcapacity.Astheactivecomponentofpara-xyleneadsorbent,theXzeolitewithaframeworkSiO2/Al2O3molarratioof2.2-2.4coupledwithcationsofBa^2+andK^+,aswellasawatercontentof4.0%-5.0%exhibitedhigherpara-xyleneselectivity.ForN2/O2separation,higherN2capacityandN2/O2separationfactorwereachievedwhentheXzeolitehadaframeworkSiO2/Al2O3molarratioof2.0coupledwithLi^+cations.TheintroductionofanothercationinXzeolitecouldfurtherincreasetheN2/O2separationfactor,whiletheadsorptionofwater,however,couldleadtoaremarkabledecreaseofN2capacity.Besides,theXzeolitecouldbeusedinadsorptiveseparationofhighlypureHeandselectiveadsorptionofCO2,CO,CH4,N2,Ar,andH2.

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简介：Instrongsolarlight,siliconsolarpanelscanheatupby70℃and,thereby,looseapproximatelyonethirdoftheirefficiencyforelectricitygeneration.Leafstructuresofplantsontheotherhand,havedevelopedaseriesoftechnologicaladaptations,whichallowthemtolimittheirtemperatureto40-45℃infullsunlight,evenifwaterevaporationissuppressed.Thisisaccomplishedbyseveralstrategiessuchaslimitationofleafsize,optimizationofaerodynamicsinwind,limitationofabsorbedsolarenergyonlytotheusefulfractionofradiationandbyefficientthermalemission.Opticalandinfraredthermographicmeasurementsunderasolarsimulatorandinastreamingchannelwereusedtoinvestigatethecorrespondingpropertiesofleavesandtoidentifysuitablebionicmodelsystems.ExperimentsstartedwiththeserratedstructureofordinarygreenleavesdistributedovertypicaltwigstructuresandfinallyidentifiedtheAustralianpalmtreeLicualaramsayiasamoreusefulbionicmodel.Itcombinesalargeareaforsolarenergyharvestingwithoptimizedaerodynamicpropertiesforcoolingandisabletorestructureitselfasaprotectionagainststrongwinds.Thebionicmodels,whichwereconstructedandbuilt,areanalyzedanddiscussed.

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简介：Severalmacroporouspolymericadsorbents(NDA-999,XAD-8,X-5andXAD-2)wereemployedinthestudytoadsorbphenylaceticacidfromaqueoussolution.EffectofsaltandambienttemperatureonadsorptionwasstudiedusingNDA-999adsorbentandtheadsorptionprocessconformstoFreundlich'smodelreasonably.Adsorptiondynamicswereconductedinbatchexperimentsinordertomakeclearthemechanismofadsorptionprocess.Itisprovedthatthesquareddrivingforcemasstransfermodelcanbeadoptedtoelucidatetheprocess.Thetreatmentprocessofindustrialwastewatercontaininghighstrengthofphenylaceticacidwasproposedforcleanerproductionofphenylaceticacid.