简介：TheballmillingofFe-24MnandFe-24Mn-6Simixedpowdershasbeenperformedbythehighenergyballmillingtechnique.ByemployingX-raydiffractionandMoessbauermeasurements.Theccmpositionevolutionduringthemillingprocesshasbeeninvestigated.TheresultsindicatetheformationofparamagneticFe-MnorFe-Mn-Sialloyswithametastablefccphaseasfinalproducts.whichimplythattheFeandMnproceedaco-diffusionmeenanismthroughthesurfaceoffragmentedpowders.Thethermalstabilityandcompositionevolutionoftheas-milledalloyswerediscussedcomparingwiththebulkalloy,.

简介：分析讨论S2O82-和Mn2+在碱性介质中的反应情况

简介：商河路步行街MN组团水系统为一次泵系统,冷源采用3台离心式冷水机组,热源采用2台板式换热器和集中供热提供一次水换热提供。商场和超市采用吊顶式空气处理机组,写字间、酒店客房采用风机盘管加新风系统。介绍了防排烟系统设计,并总结了设计体会。

简介：ThestructureandhydridingperformanceofLa0.6Nd0.4Ni4.8Mn0.2Cux(x=0～0.4)alloyswereinvestigatedinordertodevelopsuitablematerialsformetalhydrideairconditioner.TheeffectofCuadditiononthecrystalstructure,equilibriumpressure,hydrogencapacityandhysteresisaswellashydrogenabsorption/desorptionkineticsweresystematicallystudiedbyusingthemeasurementofP-Cisotherms,X-raydiffractionandscanningelectronmicroscopy.AstheamountofCuincreases,theplateaupressureincreasesandhydrogenabsorption/desorptionkineticsisimproved,buttheeffectivehydrogenstoragecapacitydecreases.Itisshownthatvariationsinthebasalplaneparameteracanbeusedasanindicationfortheplateaupressurechanges.Withtheincreaseofparametera,theplateaupressuredecreases.ForLa0.6Nd0.4Ni4.8Mn0.2Cux(x=0～0.4)alloysthereisarelationshipbetweentheeffectivehydrogenstoragecapacitiesandtheratiosoftheirunitcellparameterscanda.Theeffectivehydrogenstoragecapacitydecreaseswithincreaseofa/c.

简介：<正>Inthispaper,weapplythesolitontheorytothecaseofisometricimmersionindifferentialgeometryandobtainafamilyofisometricimmersionsfromMn1（c1）×Mn2（c2）tospaceformsMn（c）byintroducing2-parameterloopalgebra.

简介：ThestabilityconstantsofthebinarycomplexesofMn2+withnicotinamide(NA)weredeterminedfrompotentiometricpHtitrationsdataat15.0,25.0and35.0oCandI=0.1,0.2,0.4molL-1(NaClO4).Theformationofbinary1:1,1:2NA-Mncomplexesatthreedifferenttemperaturesandtheinfluenceofthreedifferentionicstrengthontheirstabilitywerereported.Thethermodynamicparameters(△Gof,△Sof,△Hof)forthecomplexformationreactionwereestimatedfromstabilityconstantatdifferenttemperatures.

简介：张力爬精细的Fe-Mn二进制合金containing0.42-1.21wt.%Mn的行为从房间温度在温度范围被调查了到475Kunder10-50MPa。张力的测试以紧张率在uniaxail负担下面以经常的小标题速度被执行10(-4)s(-1)。压力代表和激活精力决心澄清变丑机制。稳定的状态的获得的变化爬关于为Fe-Mn二进制合金的应用压力的率在大约20MPa展出二不同政体，显示一个可能的变化在爬机制。平均压力代表是约2.2，它是在合金滑动的谷物boundry的一个特征。为塑料流动的激活精力从135～92kJ/mol变化，取决于Mn内容。

简介：MN血型抗原物质在许多特性上类似于ABH血型物质,同为脂溶性的红细胞膜抗原,对酸、碱、高温等均有较强的抵抗力。经本室实验研究,血痕中的MN血型物质的检测同ABH血型物质一样,其抗原、抗体的吸收反应可发生于固相与液相界面间,即该反应为一种界面现象。界面发生的反应是很快的,据此提出一种快速检验法:以氨水浸出血痕制膜(固相),可迅速吸收抗体(液相),然后用热解离法定型。

简介：60Mn环件在装配150h后发生崩裂。利用断口分析、化学成分分析、显微组织检验以及有限元计算对断裂件进行了分析。结果表明，环件中存在白点，白点在装配应力和内部氢压的作用下发生滞后扩展，当白点裂纹扩展到临界尺寸时，裂纹尖端的应力强度因子超过零件材料的断裂韧度，从而发生崩裂。

简介：

简介：通过观察分析40Mn带钢的表面裂纹,认为该缺陷可能是由钢坯裂纹引起的,并进一步分析了表面裂纹产生的过程。

简介：Sinceithasexcellenttensilestrength,thequenchingandpartitioning(Q&P)treatedsteelhasbeenwidelyacclaimed.SomeresearchediscurrentlybeingconductedonQ&Psteel,butQ&Ptechniquesandrelatedmechanismshavebeenmostlyresearchbasedonconventionaltransformation-inducedplasticity(TRIP)steel.ThisstudyresearchestheeffectofMnonthepropertiesofQ&Psheetsteel.TwokindsofsteelsheetwithdifferentlevelsofMncontent(1.46%Mnand2.75%Mn)areinvestigated.Afterbeingfullyannealed,thesteelsheetswerequenchedtoatemperaturebetweenMsandMf.Allocationtreatmentthencausedthecarbontobepartitionedintotheremainingaustenite.Themicrostructureandtensilepropertieswereanalyzed.TheresultsshowthattheincrementofMncontentcanincreasethestabilityofthesteelanddecreasethesensitivityofthequenchingtemperature(QT).TheresultsalsoindicatethatincreasingthelevelofMncaneffectivelysuppresstheformationofbainite.

简介：弹簧的应力松弛研究对弹簧的可靠应用具有重要意义，依据温度对弹簧的应力松弛影响比较明显的基本原理，本文采用温度加速试验方法，对65Mn螺旋弹簧的贮存寿命进行了试验研究。设计并制作了适用于螺旋压缩弹簧的应力松弛试验装置。在此基础上，讨论了试验温度、试验时间对弹簧应力松弛的影响，并分别以弹簧应力下降2％、3％和5％为失效指标，根据阿伦尼乌斯寿命预测方程推出的寿命与温度关系，评价了65Mn弹簧的贮存寿命。

简介：ThegrainrefiningmechanismofC-Mnsteelsheetoncompactstripproduction(CSP)linewasinvestigatedinthisstudy.Thegrainwasabout100μmafterF1passanddecreasedallthewayoftherollingprocess(F2-F6)to15μm.Repeatedphasetransformationexperimentwasconductedtothesteelforgrainrefinement.Thephasetransformationat860℃and920℃canrefinethegrainsizeto7.5μm.

简介：[摘 要]财务风险是每一个公司都不可避免的风险问题，其对企业的影响及危害性是巨大的，本文以MN公司为对象进行了深入研究，在对MN公司概况有了基本了解之后，对MN公司的筹资活动风险、投资活动风险、经营活动风险等财务风险进行了识别，分析了MN公司目前的财务风险控制状况，为下文针对MN公司存在的财务风险问题，提出了相应的财务风险控制建议。

简介：Mg-Al-Pb合金是一种新开发的海水激活电池材料。采用熔炼浇注法制备Mg-6Al-5Pb-0.5Mn系列合金和Mg-6Al-5Pb合金。其中，Mg-6Al-5Pb-0.5Mn系列合金是以Al-15%Mn、Al-30%Mn和Al-50%Mn中间合金为添加剂制备的。采用金相显微镜和扫描电子显微镜表征其组织，采用电化学方法、析氢法和失重法研究其性能。结果表明：以Al-50%Mn中间合金为添加剂制备的Mg-6Al-5Pb-0.5Mn合金具有最负的放电电位（-1.66V），最小的腐蚀电流密度（7μm/cm2）和自腐蚀速率（0.51mg·h-1·cm-2）。这可能是因为Al11Mn4相的存在，不仅有利于腐蚀产物的脱落和增大电化学反应面积，而且也提高电化学活性。

简介：Secondaryalcoholswerecatalyticallyoxidizedwithdiace-toxyiodobenzeneasoxidantinthepresenceofsalen-Mn(Ⅲ)complextoaiTordtheeorrespoltdingketones,inupto99%yield,usingCH2Cl2orwaterasreactionmedia.

简介：Deformation-inducedmicrostructuresofhigh-Mnaustenitesteelwasinvestigatedbymetallography,X-raydiffractionandSEM.Theε-martensiteandslip-bandsaredeformation-in-ducedonthe{111}planes,andappearasthinstraightlathswith60～80°alignmentdifferencebe-tweenthem.Itwasfoundthatε-martensiteandslipbandsarekinkedatfcctwinboundarieswiththekinkedangle35～40°.Thebandsofequilateraltriangleinthemicrostructureoftensiledeformationarepresented.

简介：Soilswerecollectedfrom2-year(2-y)and3-year(3-y)oldred-pineseedlingplotsintwotreenurseries,HaywardinthenorthandWilsoninthesouthwesternpartofWisconsinStaterespectively,andequilibratedwith0.01MCa(NO3)2)forsoilsolutionZnandMn(solu-ZnandMn),andwith0.01MCa(NO3)2+0.005MEDTAforsoilabsorbedZnandMn(ad-ZnandMn).BufferingcapacityofsoilZnandMn(b-ZnandMn)wasobtainedfromtheratioofad-ZnandMntothesolu-ZnandMn.Theconcernedtracesinpineseedlingneedles(ndls),stems(sts)androots(rts)weresimultaneouslymeasured.Theresultsobtainedshowthat:About60%ofsolu-andad-Znrangedfrom0.2to0.4andfrom1to2μg/gsoilrespectively.About70%ofb-Znwaswithin3-10.Thehighestcontentofsolu-Zncomparedwiththelowestshowedadiscrepanceofmorethan10-fold.ThetwoformsofsoilZnwerecommonlyhigherinWilsonthaninHaywarkNursery.About80%ofsolu-,ad-andb-Mnwerewithin3-10,5-5.8μg/gsoiland1-2respectively.Influenceoflowbufferingcapacityonsolu-ZnandMnwasabout20timesstrongerthanthatofthehigh.TheE-value,aratioofaccumulatedZnandMninneedlestothoseinthesoilsolution,isprovedtobe:E-Zn>E-Mn;E-sts>E-ndlsorE-rts;andE-2y>E-3y.Curvilinearand/orlinearcorrelationsbetweensoilsolu-,ad-andb-ZnandMnandndls-,sts-,rts-ZnandMnwereatverysignificantorsignificantlevels.Forpredictingndls-ZnandMn,tworealizableandsimplemodelsfromtworegressionequationswereestablishedthroughtheselectionofrelatedparametersanddependentvariables.BinaryregressionanalysisbasicallyeliminatedtheinfluenceofsoilpHonthepredictionofZnandMninneedles.SoilpHwasthusthoughttobeexcludedfromthemodel.

简介：摘要报道一例新生儿MN溶血病，该患儿出生24小时内出现黄疸，逐渐加重，血清胆红素峰值高达294.3μmol/L，并出现重度贫血，血红蛋白低至68g/L，予静脉注射丙种球蛋白输注及光疗退黄、输血、口服苯巴比妥退黄等综合治疗后，患儿病情好转，痊愈出院，出生1月时因贫血输血一次，后随访生长发育良好。