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简介:Stroma-freehemoglobin(SFHb)waspreparedfromfreshorout-datedwholebloodbylysingredcells.Atdifferenttemperatures,pyridoxal5-phosphate(PLP)wasaddedina4:1molar-ratiototheHbtetramerfollowedbyreductionwithNaBH4underN2for16hrssubsequentcrosslinkingbyglutaraldehydeinpresenceoflysinefor14-16hrs.Yieldedsolublepyridoxalatedpolyhemoglobin(PolyHb-P).5%-20%gradientSDS-PAGEshowedthechangeoftheHbmolecularweight(MW)aftercrosslinking.GelchromatographyshowedthatthepolyHb-Phadacontinuousdistributionofmolecularweightwiththerangefromabout65,000to600,000Dalton.ThepolyHb-Psolutionprovidedanornaloxygencarryingwith23.1ofP50atpH7.24or26.1ofP50atpH7.24.
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简介:与搏动在magneto-hydro-dynamic泵为充分发达的流动驱动器的稳定性在这糊一个分析解决方案横向的Eletro磁性的领域被介绍。做这,流动的一个理论模型被开发,分析结果被获得因为两个都对合适的圆柱、笛卡儿的配置在海洋的容器的推进使用。管理寓言的动量PDE用近似速度分发被转变成一个平常的微分方程。数字结果被获得,asymptotic分析被造发现答案的数学行为。在为斯图亚特数字,电磁的相互作用数字,雷纳兹数字,方面比率,以及磁性、电的尖频率和阶段角度的移动的各种各样的价值的magneto-hydro-dynamic泵对时间的最大的速度被介绍。结果证明为一个高级斯图亚特数字,为在流动的某个方向的液体流动的稳定性有频率限制。这稳定性频率依赖于一条隧道的几何参数。
简介:Thetechnologyofactivationbyaddingfewactivators(<1%)toincreasetheamountofblendsincementwasinvestigated.Theresultsshowthatouteractiva-tionhasaremarkableeffectonimprovingthephysicalpropertiesofslagcement,flyashcementandvolcaniccement.Forexample,thecompressivestrengthwasincreasedby5-10MPa.Morever,theapplicationofactivationisbeneficialtogrind-aiding,earlystrengthandwater-reducingetc.
简介:Inthepaperhomogeneousparticleboardofwheatstrawisresearched.Theresultshowsthetechnologyofhomogeneousparticleboardfromcostandquality.Themoisturecontentofstrawparticleis2.0%~2.5%.Thetemperatureofhot-pressingis150℃.Thetimeofhot-pressingis48sec/mm(panelthickness).TheratiobetweenMDIandUFis0.40.Thegluecontentforsurfacelayerofwheatstrawparticleis10%(MDI2.86%,UF7.14%).Thegluecontentforcorelayerofwheatstrawparticleis8%(MDI2.29%,U...
简介:Tumormetastasisisthedominantcauseofdeathincancerpatients.However,themolecularandcellularmechanismsunderlyingtumormetastasisarestillelusive.Theidentificationofproteinmoleculeswiththeirexpressionscorrelatedtothemetastaticprocesswouldhelptounderstandthemetastaticmechanismsandthusfacilitatethedevelopmentofstrategiesforthetherapeuticinterventionsandclinicalmanagementofcancer.Proteomicsisasystematicresearchapproachaimingtoprovidetheglobalcharacterizationofproteinexpressionandfunctionundergivenconditions.Proteomictechnologyhasbeenwidelyusedinbiomarkerdiscoveryandpathogeneticstudiesincludingtumormetastasis.Thisarticleprovidesabriefreviewoftheapplicationofproteomicsinidentifyingmolecularfactorsintumormetastasisprocess.Thecombinationofproteomicswithotherexperimentalapproachesinbiochemistry,cellbiology,moleculargeneticsandchemistry,togetherwiththedevelopmentofnewtechnologiesandimprovementsinexistingmethodologieswillcontinuetoextenditsapplicationinstudyingcancermetastasis.
简介:Experimental Study of Decay of Hot NucleiExperimentalStudyofDecayofHotNuclei¥WangSufang;TanJilian;SongMingtao;ZhangChong;HeZh...
简介:Phosphatdylcholinesandtheiranalogs,thefunctionalbuildingblockofthemembrane,arerecentlyfoundtomediatemultiplephysiologicalprocessesandexhibitabroadrangeofdesirablepharmacologicaleffects,whichinvolvehydrophobiclipophilicinteractions(HLI)betweenthephospholipidandthecellmembrane.TheHLIbehaviorofphosphatJdylcholines(Ln)andtheiranalogues1,2-diacyl-sn-glycerol-3-phosphoricacidbromoethylester(Pn),havebeeninvestigatedinMeOH-H20binarysystemsofdifferentvolumefractions(designatedasΦ)oftheorganiccomponent,byemployingα-nephthylethyllaurylether(Np-12)asfluorescentprobe.AveryinterestingobservationisthattheLnpossessesdoublecharacter,i.e.,itbehavesbothasanaggregatorandasadeaggregator.Theeffectsofthestructureandtheenvironmentonthecoaggregationanddeaggregtionarealsodiscussed.
简介:Macro-trafficmodelisaneffectivetoolforsupportingtrafficprogrammertoThisarticleisbasedonthesoftwareproductsVISEM(demandmodel)andVISUM(supplymodel)fromPTVCompanyofGermany,andstudiesmacro-trafficmodelonthebasisofconsideringthattrafficsystemisaninteractivesystemofbetweenasupplysystemandademandsystem.
简介:China'smalemarriagesqueezeanditspotentialconsequencehaveattractedmuchattentionandgivenrisetodebate,butmoststudiescontributethissqueezetosexstructureandneglecttheagestructure,andsomestudiesuseflawedmethodtostudythecontributionofagestructureinthissqueeze.InthispaperwedevelopanindicatorofSpousalSexRatio(SSR)andapplyadecompositionmethodintoageandsexstructure.BasedonthedatafromChina's2010censusandprojection,wepredictthatfrom2010to2020,theagestructurewillbethedominantfactorforChina'smalemarriagesqueeze,andfrom2020to2034,thecontributionofsexstructurewillbeincreasing,whereasthatofagestructurewillbedecreasing.From2034to2045,China'smalemarriagesqueezewillmainlyfromimbalancedsexstructure,andtheagestructurewillcontributelittleornegativelytoChina'smalemarriagesqueeze.
简介:Asaresultofmoreandmoreseriousenergyrisks,thestudyofnationalenergysecurityzoningisnotonlythebasicrequirementofenergyriskmanagementbutalsothenewdemandofeconomicdevelopmentfortheenergyindustry.Firstly,thispaperanalyzesthebasicsituationofenergyresourcesandproductionandconsumptionofpri-maryenergyfrom1996to2005inChina.Secondly,thispaperfoundsanEnergySecurityIndexSystemformedbysixindicesincludingthepercentageofenergyreserves,interlocaldependentdegree,energyelasticitycoefficientandsoon.Itsubsequentlycalculatestheweightoftheseindiceswiththefactoranalysisratingmethod.Lastly,thepaperevaluatesandzonestheabilitiesofenergysecurityof30provincesinChinawiththegreyclustermethod.Accordingtotheirsecurity,the30provincesareclassifiedintothreedifferentlevels:high,medium,andlowlevels.TheregionsatlowenergysecuritylevelincludeBeijing,Shanghai,Zhejiang,Fujian,Guangdong,GuangxiandHainan.Theyaremainlylittoralandshortofprimaryenergyproductionwhilemostlydependentonotherprovinces.Thoseatmediumenergysecuritylevelinclude15provinces(citiesordistricts),suchasLiaoning,Tianjin,Hebei,Shandong,Henan,Hunanandsoon.Theseprovincesareinthenortheast,north,eastofandcentralChina.Thoseathighenergysecu-ritylevelcontainShanxi,InnerMongolia,Heilongjiang,Jilin,Chongqing,Sichuan,Shaanxi,Xinjiang.Theseprov-incesarethemainprimaryenergyproductionbases.