简介：Theformationandevolutionofdeformationtextureinpolycrystallinematerialsarestudiedbyphase-fielddynamicmodel.Inaddition,thedrivingforceoftextureevolutionisalsodiscussed.Inthismodel,grainswithdifferentorientationaredefinedbyasetofcontinuousnon-conservedorderparameterfields.Simulationresultsshowthatgrainswithpreferredorientationgrowattheexpenseofthosewithunfavorableorientations.Itismoreimportantthat,elasticpotentialratherthanelasticenergyplaysacrucialroleintheevolutionoftexturewhetherthepolycrystallinesystemissubjectedtouniaxialstressorshearstress.

简介：TheagingbehaviorsofirradiatedtungstenbyhighenergySi3＋andH＋ionsaremainlyinvestigatedusinginternalfriction（IF）methodcombinedwithSEMtechnology.TheSEManalysisindicatesthatmoresevereirradiationdamageappearsinthesurfaceofsimultaneousdualSi3＋H＋irradiatedspecimenthanthatinthesequentialdualSi3＋H＋irradiatedspecimenorthesingleSi3＋irradiatedspecimensbecauseofthesynergisticeffectofSiandHirradiation.TheIFbackgroundoftheirradiatedsampleisaboutoneorderofmagnitudehigherthanthatoftheunirradiatedsampleowingtotheexistenceofhighdensityfreshdislocationsinducedbySi/Hirradiation,InthesequentialdualSi3＋andH＋irradiatedspecimen,thehydrogenSnoek-Ke-Koster（SKK）peakassociatedwiththemovementofdislocationsdragginghydrogenatomsisobservedanditsheightdecreaseswithagingtimeatroomtemperature.AsforthesimultaneousdualSi3＋H＋irradiatedspecimen,however,thereisnosuchhydrogenSKKpeak.Thereasoncanbeexplainedashydrogendiffusionandpinningeffectofdislocations.

简介：Withtheaidofthelatestfiberopticsensingtechnology,parametersinthecureprocessofthermosettingresin-matrixcomposite,suchastemperature,viscosity,voidandresidualstress,canbemonitoredentirelyandefficiently.Inthispaper,experimentresultsofviscositymeasurementincompositecureprocessinautoclaveusingfiberopticsensorsarepresented.Basedonthesensedinformation,acomputerprogramisutilizedtocontrolthecureprocess.Withthistechnology,thecureprocessbecomesmoreapparentandcontrollable,whichwillgreatlyimprovethecuredproductsandreducethecost.

简介：大多数商品化的冠的stents用316L做的由于它性质的好联合，并且当前，某新stents用由于它的更高机械的性质的基于钴的合金做的不锈钢。然而，在这些材料的镍或钴元素的高数量的存在，被知道触发有毒、过敏的回答，引起了许多担心。没有镍的奥氏体的不锈钢被开发了以便解决这些问题。在这份报纸，基于新Fe-Cr-Mn-Mo-N的开发打高氮没有镍的奥氏体的不锈钢，性质象机械性质那样，在汉克的解决方案，并且在包括运动clotting时间和血小板粘附的vitro血相容性的腐蚀电阻，与上述二常规材料，316L不锈钢和Co-28Cr-6Mo合金相比被调查。结果证明新高氮钢钢和Co-28Cr-6Mo合金，和罐头是的316L比那些拥有了机械性质，腐蚀抵抗和血相容性的更好的联合为冠的stents的制造的有希望的其他的材料。

简介：数字模拟基于计算液体动力学(CFD)是为在FSW期间调查内在的热机械的条件的份量上的一条有用途径，例如温度地和材料变丑地。在FSW的CFD模拟的关键问题之一是摩擦边界条件的使用，它在数字模型代表在焊接工具和细工品之间的磨擦。在这研究，三维的数字模拟被进行在AA2024的FSW期间分析热转移和塑料变丑行为。为比较目的，边界速度(BV)模型和边界砍压力(BSS)模特儿被雇用以便在在FSW预言温度和材料变丑估计他们的表演。注意不同边界条件在材料变丑上在温度，而是相当不同的预言上产出类似的预言有趣。数字预言与试验性的结果相比。当由BV模型和试验性的大小的预言之间有大差别时，由BSS模型的预言的变丑地区几何学与试验性的结果一致。BSS模型在变丑地区几何学上产出更合理的预言的事实被归因于它的能力自动地在工具/细工品接口调整接触状态。在温度地和材料变丑地上基于有利预言，BSS模型被建议比BV模型在FSW的数字模拟有更好的表演。

简介：三不同Ti-Si氧化物structuares，硅石支持了titania，硅石涂的titania和亲密地混合的silica-titania，包含10%-40%SiO2，被nanocrystalline(nc)的微观结构参数的sol-gelprocess.The变化在二进制氧化物的三kirds成为TiO2锐钛矿包括在里面飞机间距d，电池常数(a0，C0)，房间体积V，房间轴比c0/a0和水晶谷物缩放，被高决定传播电子显微镜学(HRTEM)和X光检查衍射(XRD)比较地调查。微观结构参数与增加SiO2内容显著地变化，这被发现，annealingtemperature.Different组织了Ti-Si二进制氧化物导致微观结构参数的不同变化趋势。二进制氧化物包含越多SiO2，ncTiO2锐钛矿的缺点越格子出现；Si阳离子的散开或移植能是在微观结构的变化的一个重要有影响的因素。在三种二进制氧化物的ncTiO2的谷物尺寸不仅取决于SiO2内容和退火的温度而且在ncTiO2-anatase.Both谷物尺寸和nc的阶段转变的格子microstrainand失真的度上，TiO2锐钛矿是有效地与增加SiO2内容禁止了。

简介：Theimplantedionrange,thedepthprofileandthefilmsttuctureoftheimplantedlayerwerestudied;thecarrierconcentrationandthemobilityweremeasured;theconductivitymechanismofthefilmimplantedFeintoAl2O3ceramicwasdiscussed.TheconclusionisthattheimplantedFe2+ionsmoveintoAl2O3latticeandreplaceAl3+toformsubs-titutionimpuritiessothattheionimplantedlat-tice,ascomparedwiththeoriginalone,presentsaneffectivenegativechargewhichformsanegativechargecenter.Avacancyisboundarroundit,andanacceptorisintroducedintheforbiddenband.

简介：在液体铁的Al2O3包括的形成在加热的一个电阻被调查了获得deoxidation和氧化的试管炉子联系了数据。包括的形成被与包含不同的溶解的氧层次的液体Fe在一短时间在接触带给一艾尔在deoxidation的早阶段期间模仿。氧化被暴露包含Fe的艾尔学习融化到CO/CO2气氛。通过当模特儿，为包括的本地人和时间依赖者生长条件的估计能被做并且连接到包括特征。

简介：三件kaolinite样品申请了纸涂层从美洲(KA)被收集，巴西(KB)，和中国(KC)分别地。参数象Si-O和Al-O的平均契约长度那样(l(Si-O)和l(Al-O)),有四面的旋转角度()，有四面的变平的角度变化()并且八面的变平角度()对理想的角度比较，粒子层厚度(T)和基础z折皱(z)被XRD和Rietveld方法分析。试验性的结果显示了那zKA>zKC>zKB。KB有常规结构，KA有混乱结构，KA>KC>KB,KA>KC>KB,和KA>KB>KC。KA有不稳定的四面体和八面体。KB和KC分别地有稳定的四面体和八面体。在制造的过程，kaolinite结构可以与不稳定的四面体和八面体从地方被打破。l(Si-O)KA>l(Si-O)KB>l(Si-O)KC和l(Al-O)KA>l(Al-O)KC>l(Al-O)KB。仅仅考虑了的，是契约长度的效果，KA可以最容易在制造被打破。与KA和KB的契约长度相比，KB和KC的Si-O，和Al-O可以是容易分别地碎。TKA

简介：Tostudytheosteogenicabilityoftissue-engineeredboneconstructedbycompoundingzinc-sin-teredbovinecancellousbonewithrabbitmarrowstromalcells(MSCs)invivo,thezinc-sinteredbovinecancellousboneofbeta-tricalciumphosphate(TCP)typewaspreparedbysinteringthefreshcalfcancellousbonetwiceandthenloadingitwithzinc-ion.TherabbitMSCswerecultured,inducedandseededontothezinc-sinteredbovinecan-cellousbones.Thetissue-engineeredboneswerethenimplantedintotherabbits'bockmuscles.Thenewlyformedbonetissueswereobservedbyhistologicalmethodsandtheareasofnewosseoustissuesweremeasuredattheendofthe4thand8thweek.Thezinc-sinteredbovinecancellousbonesalonewereimplantedontheothersideascontrol.TheosteogenicactivityofMSCswasidentifiedbyalkalinephosphatase(ALP)stainingandcalcificationnodchi-nalizarinstaining.Attheendof4thweek,asmallamountofnewbonetissueswasobserved.Attheendof8thweek,thereweremanynewlyformedbonematuretissues.Moreover,theareaofthelatterwassignificantlylargerthanthatoftheformer(P＜0.01),whileinthecontrolgrouptherewasnonewboneformation.Thetissue-engi-neeredbone,whichwasconstructedbycombiningzinc-sinteredbovinecancellousbonewithMSCs,hassatisfactoryosteogeniccapabilitiesinvivo.

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简介：Anovelsolubleπ-conjugatedpolymer,poly[(3-acetylpyrrole-2,5-diyl)p-(N,N-dimethylamino)azobenzylidene](PAPDMAABE),wassynthesizedbycondensationof3-acetylpyrrolewith4-aldehyde-4'-dimethylaminoazobenzene(ADMAA).ThechemicalstructureofPAPDMAABEwascharacterizedbyFouriertransforminfraredspectroscopy(FTIR),1H-NMR,andUV-Vis-NIRspectra.Transmissionelectronmicroscope(TEM)analysisforPAPDMAABEindicatesthatpartofPAPDMAABEisincrystalstate,duetotheshort-rangeorderofthepolymer.Thermogravimetricanalysis(TGA)curveshowsthatthepolymerhasgoodthermalstabilityanditsdecompositiontemperatureis248℃.TheopticalbandgapofPAPDMAABEobtainedfromtheopticalabsorptionspectrumisabout1.73eV.Theresonantthird-ordernonlinearopticalpropertyofPAPDMAABEat532nmwasstudiedusingdegeneratefour-wavemixing(DFWM)technique.Theresonantthird-ordernonlinearopticalsusceptibilityofthepolymerisabout7.48×10-8esu.

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简介：在原处，由结冰蚀刻传播电子显微镜(FETEM)的非水的nano分散系统(反及)的描述被报导。改进just-for-once连续标本准备评价并且得到好描述结果，结冰蚀刻的一个改善标本准备方法被开发。反及的尺寸，分发和形态学直接被设想。粒子分散特征和粒子密度的一些信息能也被获得。FETEM描述的生产率是优秀的。与散布方法的激光作比较，它是容易的特别为小尺寸粒子抛锚给积极错误disperser，FETEM描述能给粒子尺寸的更精确的测量。而且，FETEM能在非水的媒介给nanoparticle的分散特征。

简介：Withpositronannihilationradiationonedimensionangular-correlationdevice,itismeasuredthatpositronannihilationradiationonedimensionangular-correlationcurvesofpolycrystalsodiumionconductorNa5Y1-xCrxSi4O12（NYCS）system.Afterelectronmomentumdistributioncurvesarenormalized,linearparametersarecalculated.TheparametersH,WandSshowthechangeofNa+ionvacancyconcentrationinNYCSseriessamples.TheresultsshowthatparametersH,WandSofonedimensionangular-correlationcurvesofthosesamplesvarygreatlywithCr2O3contents.WithCr2O3contentincreasing,HandSparametersincrease,butWdecreases,andreachesextremesatx=0.05;thenwithCr203addingcontinually,parametersHandSdecreasegradually,parameterWincreasesgradually.Thisshowsthat,inaddtiontoCr2O3,theconductivityhascloserelation