简介：Theprocessingoffine-grainedparticleswithdiametersbetween1and10micronsisdifficultduetostrongvan-der-Waalsattractionforces.Inordertoimprovethehandlingproperties,thefine-grainedparticles,i.e.host-particles,arecoatedwithvariousnanoparticles,i.e.guest-particles.Themixingoffine-grainedpowdersisinfluencedbyparticle-particleinteractions.Iftheseforcesaredistinctivelyused,bothinteractiveandorderedmixtu.rescanbeproduced.Theseparticlemixturesconsistofcomposite-particlesthathavenewphysicalproperties.Thesemodifiedpropertiesdependstronglyonthecoatingprocess,thediameter-andmass-relationshipoftheguest-andthehost-particles.Thepropertiesofthecomposite-particlescansystematicallybeadjustedtotherequirementsofindustrialapplications.Forexample,alaboratorybubblingfluidizedbedcanbeusedtodescribetheconveyingbehaviorofthefunctionalizedhost-particles.Applicationsforthefunctionalizedparticlesareinthepharmaceuticalandthepowdercoatingindustries,e.g.enhanceddrypowderinhalersandthinlacquerfilms.Thepresentresearchcomparesthreedifferentmixing/coatingprocesses.Thecomposite-particlesarecharacterizedbyTEM,SEMandwiththeirfluidizationcharacteristics.Thecoatingprocessitselfismonitoredbytheelectrostaticchargeoftheparticles.

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简介：过程的热踩，熄灭并且划分的一个新奇设计计划在可抑制的硼钢被进行获得nanometric包括极其细小的保留的奥氏体和马氏体的双微观结构。材料拥有优秀机械性质，这被显示出，没有损害力量，韧性能进一步被改进。最新对待的钢与热印上并且熄灭的钢的相比从6.6%～14.8%显示出优秀机械性质和钢增加的全部的延伸。因此，这种钢成为了另一组先进高张力钢。为如此的优秀机械性质主要负责的微观结构被调查。

简介：这份报纸在陶艺和脱臼包括阶段转变为无弹性的材料行为的纹理粗糙的原子论的模拟论述新方法论在金属的调停的粘性。方法论联合平衡方程和一个修改有限元素方法的原子论的明确的表达。与显著地自由的更少度比那些一个充分原子论的模型并且没有另外的组成的规则但是interatomic力量地，新纹理粗糙(CG)方法被显示在预言材料的非线性的组成的回答并且也复制象阶段转变那样的原子规模的现象可行(在硅和脱臼成核和移植，脱臼环的形成和在单个水晶的叠的差错带子的钻石-Sn)镍。指导在CG和现在的方法论在没有失去必要原子论的特征，当模特儿和无弹性的材料行为的模拟有效、有希望的相应完整的分子的动力学(MD)模拟表演之间的比较。潜在的应用和CG方法的限制也被讨论。

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简介：Inthepresentstudythefabricationofgradedcoarsegrainedceramicbodiesforrefractoryapplicationswasinvestigatedusingapressurefiltrationcell,whichusespressurizedairasthepressuremedium.Thepressurefiltrationcellwasusedtoexaminetheinfluenceofdifferentceramicrawmaterials,twodispersants,andoftheparticlesizedistributiononthefiltrationbehaviorandonthefiltercakesurfacequality.Pressureslipcastingofspinelbasedslipsresultedincrack-freefiltercakes,whilealuminabasedslipsresultedinfiltercakes,whichalwaysstuckontheusedPMMAfiltermedium.Furthermore,citricacidasanelectrostaticdispersantresultedinamuchlowerfiltrationcakeresistanceandhenceshorterfiltrationtimesthananelectrostericdispersant.Abroaderparticlesizedistributionwithahigheradditionofthefinestparticlefractioncausedanincreaseinthefiltercakeresistancebutalsoyieldedmuchbettersurfacequalities.Finally,gradedfiltercakeswiththreelayersofaluminarichmagnesiumaluminatespinelwithamaximumgrainsizeof3mm,1mm,and0.5mm,respectively,werefabricated.ThecomputedX-rayanalyzesindicatedaperfectbondingbetweenthethreelayers,whichisasignificantimprovementtopreviousstudies.However,thegradedfiltercakesexhibitedfrequentlycracksatthebottom,whichwasprobablycausedbytensilestressesfromthefrictionofthefiltercakeswiththepressurefiltrationcell.Thiswillbefurtherinvestigatedinsubsequentstudies.Theachievedresultsdemonstratethefeasibilitytoproducecoarsegrainedoxideceramicsforrefractoryapplicationsbypressureslipcasting,whicheventuallyallowstheproductionofcompositeswithtailoredcompositions,microstructureandfunctionality.

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简介：ShanghaiislocatedineasternChinaandisbuiltonoverburdensoillayers.ItcanbeseenfromtheMexicoMs=8.1earthquakeonSeptember19,1985andtheHanshinMs=7.4earthquakeonJanuary17,1995thatheavycasualtiesandpropertylosseshaveadirectrelationshipwithoverburdensoillayers.Groundmotionscausedbyearthquakesaresignifieantlyamplifiedwhenpassingthroughthesoillayers.Undertheinfluenceoftheseamplifiedmotions,buildingstructures,whosenaturefrequencyiswithinthefrequencybandofsoilamplificationresponse,willexperiencemoreseveredamagethanthosebuiltonbedrock.Therefore,engineeringseismologistshavepaidconsiderableattentiontheamplificationresponsesintheShanghaioverburdensoillayers.TheamplificationresponsesofsoilandsandlayersinthispaperaregivenbytheML=4.1earthquakeinNantong,JiangsuProvinceonDecember25,2001at31.8°N,120.9°E.Itcanbeseenthattheresponsesofsoilandsandlayersareverydifferent.Thatisimportant.

简介：在不同疲劳下面的低碳的钢表装载的nano颗粒的delaminated上的紧张紧张疲劳生活测试被执行学习钢的疲劳性质。钢的三维的微观结构被TEM观察。另外，在不同负担下面的标本的疲劳破裂的形态学被SEM观察。结果在低压力的条件下面在nano颗粒的钢的弱接口上显示出那种微裂缝的形式，它妨碍主要裂缝的繁殖并且减少疲劳裂缝繁殖率，导致钢的延长疲劳生活。

简介：为有机化合物的大数量和在Changjiang河口的咸度的变化，由在高度混浊的系统的咸度和腐植质的联合效果的有细密纹理的沉积的絮凝过程上的学习具有为混浊最大值(TM)的形成的机制的理解的批评意义。为有机化合物的大数量和在Changjiang河口的咸度的变化，由在thehigh混浊的系统的咸度和腐植质的联合效果的有细密纹理的沉积的絮凝进程上的学习具有为混浊最大值(TM)的形成的机制的理解的批评意义。fine-grainedsediments上的咸度和腐植质的效果通过flocculation/coagulationpower(F)，直径(D)和动电位(Z)的方面的合成学习被分析了。并且絮凝物过时的人或物的小宇宙的配置由使用一台扫描电子显微镜和Fourier变换InfraredSpectrometry分析了。Theresults表演那；(1)随咸度，F和D的增加变得更大并且Z变得更小，并且随腐植质的集中的增加，F变得更小，但是D和Z变得更大；(2)絮凝的小宇宙的配置证明在盐形式的好沉积上的腐植质包装，和絮凝C当模特儿-P-OM(C代表泥土；P阳离子；OMorganic材料)能成功地在Changjiang河口的高度混浊的区域表明有细密纹理的沉积的形成的机制。

简介：Accesscontrolenablestheownerstoassigndifferentusersdifferentpermissionstoseedifferentviews.Thecurrentblogsystemdoesnotsupportfine-grainedauthorization.Thatis,thebloggersdisallowtojustassignpartialcontentsoftheblogposts(i.e.,aparagraphorseveralparagraphs)toreaders.Themanagementcostisnodoubttobesignificantlyincreasedwhilehandlingtheauthorizationsonthehugeamountofblogarticles.Inthispaper,weproposeaschemeforsupportingafine-grainedaccesscontrolmechanismonblogarticles.Theadvantageisthatbloggersareabletoauthorizepartialcontentsofblogpoststodifferentusersorgroupsofusers.

简介：有细密纹理的碳酸盐岩石，它广泛地发生在始新世在Shulu的阶层下垂，Bohai海湾盆，诺思中国，代表一座异乎寻常的、有细密纹理的碳酸盐水库。然而，以前的研究忽略了岩相部件和他们的形成机制的复杂性。有细密纹理的碳酸盐岩石是烃在形成并且聚在一起的典型水库。这些岩石的性质的更好的理解为评估异乎寻常的、有细密纹理的碳酸盐水库的质量是极其重要的。各种各样的岩相部件与petrographic观察和碳同位素分析的联合在这研究被区别。这些有细密纹理的碳酸盐岩石包括源自陆地，源於生物并且diagenetic材料。源自陆地的输入和生物学上导致的降水是在湖的材料的主要来源。五张岩相基于沉积特征(核心和薄节)和矿物学的数据的观察被识别：(1)像纹泥的把压成薄片的calcilutite，(2)分级把压成薄片的calcilutite，(3)interlaminatedcalcisiltitecalcilutite，(4)巨大的calcilutite，并且(5)巨大的calcisiltite-calcarenite。他们的起源被各种各样的岩相部件记录，它被物理、化学、生物的过程的相互作用控制。这研究显示基岩的岩性学是控制碳酸盐累积的关键因素。tectonics和气候能影响捱过和岩相的类型。主要生产率控制了endogenic方解石的降水。这些因素联合决定在Shulu积累了的丰富的有细密纹理的碳酸盐岩石下垂。

简介：Thermalstabilityandstrainratesensitivityofultrafine-grained(UFG)Feproducedbysevereplasticdeformation(SPD)wereinvestigated.TheUFGFewasprocessedbyequal-channelangularpressing(ECAP)viarouteBc.After6passes,thegrainsizeofUFGFereaches600nm,asconfirmedbymeansofelectronbackscatterdiffraction(EBSD).Examinationofmicro-hardnessandgrainsizeofUFGFeasafunctionofpost-ECAPannealingtemperatureshowsatransitionfromrecoverytorecrystallization.Thecriticaltrans...

简介：Theliquidphasebehaviorofthefine-grained5083Alalloyobtainedthroughthermomechanicalprocesswasinvestigatedduringthetensiletestsinatemperaturerangeof380-570-Candstrainraterangeof4.17×10-4-1.0×10-2s-1.Themaximumelongation530%ofthefine-grained5083Alalloywasobtainedat550-Cand4.17×10-4s-1.Fractureanalysisbyscanningelectronmicroscopy(SEM)indicatedthattheformationoffilament(formedbyliquidphase)wasgreatlyaffectedbythetensiletemperatureandstrainrate.Theresultsalsoshowedthattheoptimummorphologyofformedfilamentwasobtainedat550-Candastrainrateof4.17×10-4s-1.Theeffectofliquidphaseonsuperplasticdeformationofthealloywasfurtherdiscussed.

简介：有细密纹理的ZrO2工程的表面质量陶器用270被研究#有或没有细工品的钻石车轮磨擦的二尺寸的超声的颤动(WTDUVG)。由AFM图象，表面地形学和磨陶艺的二维的超声的颤动的微结构特别被分析。试验性的结果显示表面粗糙与磨颤动模式和材料移动机制有关。WTDUVG的表面质量比常规磨擦的优异，并且那材料移动机制是可锻的模式磨擦，为二维的超声的颤动磨擦是容易的。

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简介：Anas-castmagnesiumalloywithhighAlcontentMg15Alwassubjectedtoequal-channelangularpressing(ECAP)throughadiewithanangleofφ=90?at553KfollowingrouteBc.Itisfoundthatthenetworkβ-Mg17Al12phasesintheas-castMg15Alalloyarebrokenintosmallblocksanddisperseduniformlywithincreasingnumbersofpressingpasses.Moreover,manynano-sizedMg17Al12particlesprecipitateintheultra-fineα-Mgmatrix.Thegrainsareobviouslyrefined.However,thegrainstructureisinhomogeneousindifferentareasofthealloy.Theaveragesizeoftheprimaryphaseα-Mgisreducedtoabout1μmwhilegrainsofaround0.1-0.2μmareobtainedinsometwo-phaseareas.WithadditionalECAPpasses(upto8),coarseningofthegrainsoccursbydynamicrecovery.RoomtemperaturetensiletestsshowthatthemechanicalpropertiesofMg15Alalloysaremarkedlyimprovedafter4ECAPpasses.Theultimatetensilestrengthandelongationtofailureincreasefrom150MPato269.3MPaandfrom0.05%to7.4%,respectively.Comparedwiththatafter4passes,theelongationtofailureofthealloyincreasesbutthestrengthofthealloyslightlydecreasesafter8ECAPpasses.FracturemorphologyoftheECAP-processedalloyexhibitsdimple-likefracturecharacteristicswhiletheas-castalloyshowsquasi-cleavagefractures.

简介：有细密纹理的岩石(FGR)是重要来源岩石和目前是前景热点的页岩烃的水库。广泛地分布式的有细密纹理的沉积(FGS)上面在Dongying消沉的Shahejie形成的第四个成员作为一个例子被带在这份报纸学习时空进化和FGS的控制因素。基于井核心的分析，薄节，无机、器官的地球化学指示物，FGR被划分成岩相的7种类型。通过point-line-plane的学习，这研究证明FGS有rhythum，差异和继任的特征。第一个阶段被粘土似的FGS(巨大的claystone)描绘。第二个阶段被碳酸盐FGS描绘(low-TOC把石灰石压成薄片)并且含白云石的FGS(含白云石淤泥的页岩)由违反形成了。第三个阶段被器官富人的碳酸盐FGS描绘(middle/high-TOC把石灰石压成薄片)在分布式骑车。第四个阶段被FGS描绘混合碳酸盐和siliciclastic沉积(石灰质淤泥的页岩)。FGS的许多时空进化被多重因素包括tectonism，气候和湖条件控制。

简介：在这研究，极其细小颗粒(UFG)冷滚动制作的6061艾尔合金是磨擦促使(FSW)与在两表情下面的不同旋转率冷却焊接并且在水里的快速的冷却。400的Low-heat-input参数?水(400水)里的rpm旋转率能有效地禁止重新使结晶的谷物变粗，减少降水率，并且保留UFG6061艾尔父母金属的更多的脱臼。400水关节显示出高低坚硬的价值，狭窄的低坚硬的地区，和高张力的力量，归因于脱臼的效果，谷物边界，稳固答案，并且降水变硬。这个工作提供有效策略由与大变丑和low-heat-inputFSW的冷滚动制作大尺寸的体积艾尔·乌夫格合金。

简介：Ascientifichypothesisisproposedandpreliminarilyverifiedinthispaper:underthedrivingofseepageflows,theremightbeaverticalmigrationoffine-grainedsoilparticlesfrominteriortosurfaceofseabed,whichisdefinedas‘sub-bottomsedimentpumpaction’inthispaper.FieldexperimentswereperformedtwiceontheintertidalflatoftheYellowRiverdeltatostudythisprocessviabothtrappingthepumpedmaterialsandrecordingtheporepressuresinthesubstrate.Experimentalresultsarequiteinterestingaswedidobserveyellowslurrywhichismainlycomposedoffine-grainedsoilparticlesappearingontheseabedsurface;seepagegradientswerealsodetectedintheintertidalflat,undertheactionoftidesandsmallwindwaves.Preliminaryconclusionsarethat‘sedimentpump’occurswhenseepageforceexceedsacertainthreshold:firstly,itisbigenoughtodisconnectthesoilparticlesfromthesoilskeleton;secondly,thedegreeofseabedfluidizationorbioturbationisbigenoughtoprovidepreferredpathsforthedetachedmaterialstomigrateupwards.Thentheywouldbefirstlypumpedfrominteriortothesurfaceofseabedandtheneasilyre-suspendedintooverlyingwatercolumn.Influentialfactorsof‘sedimentpump’aredeterminedashydrodynamics(waveenergy),degreeofconsolidation,indexofbioturbation(permeability)andcontentoffine-grainedmaterials(sedimentaryage).Thisnewperspectiveof‘sedimentpump’mayprovidesomeimplicationsforthemechanisminterpretationofseveraluncleargeologicalphenomenaintheYellowRiverdeltaarea.