简介：ToimprovethewatertreeresistanceofPE,linearlow-densitypolyethylene(LLDPE)wascompoundedwithsodiumacrylate(NaAA)forinsitupolymerization,inwhichNaAAwasformedthroughtheneutralizationofacrylicacid(AA)withsodiumhydroxide(NaOH)beforeaddingdicumylperoxide(DCP)toinitiatetheinsitugraftpolymerizationandhomopolymerization.AseriesofLLDPE/NaAAcompoundswereinvestigatedfortheirwaterabsorptionratio(WAR)measurement,watertreeing,mechanicalanddielectricproperties.TheresultsstronglysuggestthatNaAAcanimprovethewatertreeresistanceofLLDPE.Inaddition,theLLDPE/NaAAcompoundspossesssatisfactorymechanicalpropertiesanddielectricproperties.CharacterizationofLLDPE/NaAAcompoundsbyusingFouriertransforminfraredspectrometry(FTIR)suggeststhattheneutralizationandpolymerizationreactioncouldbeachievedeffectively.UsingadequateDCPcontentisthekeyfactorforcontrollingthepolymerizationofNaAAwithpreciseconversionratio.

简介：客观：学习在胸方法的ductalcarcinomainsitu的作为一个预示的因素的组织学的分级的意义：根据凡·奈鈥檚分类，胸的ductalcarcinomainsitu(DCIS)的32个盒子被划分成三个组。结果：低等级(很好区分的、低等级DCIS)12个病人(37.5%)；中间的等级，9个病人(28.1%)；高等级(糟糕区分的DCIS)11个病人(34.4%)。在高等级DCIS之中，histologic子类型是粉刺(9个病人)，micropapillary(1个病人)和固体(1个病人)。在高等级DCIS的积极表示ofc-erbB-2，p53和MIB-1在中间、低的等级DCIS比那高。高等级和低等级DCIS之间的差别是重要的(P<0.05)。表示嗯在高等级，DCIS在中间、低的等级DCIS是比那低的。结论：胸ductalcarcinomainsitu的组织学的分级可以是一个好预示的因素。

简介：Theservicelifeofrefractoriesinladlewallsislimitedbycorrosion,abrasion,thermalshockandstructuralspallingmechanisms.Whentheladleislinedwithbrickstheytypicallyneedtobecompletelyremovedafteracertainnumberofheatstobereplacedbynewbricksofthesamesizeastheoriginalbricks.Notsoformonolithicladlelinings.Attheendoftheirservicelifetheremainsofthecastablecanalmostcompletelyberecycledastheycaninfactstayinplace.Onlytheworn-outpartofthelininghastobereplacedbyanewcastable.20%-50%oftheinitialladleliningcanberecycled"insitu".Theinstallationcanefficientlybedonebyshotcretingtechnics.Butitrequiresacastablethatresistsslagpenetrationverywell.Castablesbasedonacalciummagnesiumaluminatebondprovidetherequiredpenetrationresistance.Pumpingandshotcretingisverywelladaptedforrepairsofblastfurnaceshafts,torpedocars,hotmetalandsteelladlelinings[1].However,verylittleispublishedabouthowagoodpumpingandshotcretingperformancecanbeachievedwhentheinstallationhastobedoneunderextremeweatherconditions.Athighambienttemperaturethechallengeistoensureagoodpumpingresultwithoutearlycastablestiffening.Blockageofthepumpwouldbetheconsequence.Atlowambienttemperaturethedifficultyistode-activatethehighlyefficientdeflocculantfastenoughwithagellingagentaddedintothewetmixatthenozzletopreventthegunnedmaterialslippingoffthewall.Thispaperstudiesstrategieshowtoachievegoodinstalledpropertiesevenatextremeambienttemperatures.Theinteractionsbetweendeflocculants,retarders,gellingagents,andcalciummagnesiumaluminatebinderasafunctionoftemperaturearestudiedforanalumina-spinelladlecastable.Besideanewgellingagentforthiscastabletypealsoaspecialstabilizertoreducethetemperaturesensitivityhasbeeninvestigated.Itwillbehighlightedhowtheuseofthenewcalciummagnesiumaluminatebinderinlad

简介：ＩＮＳＩＴＵＬＡＢＥＬＩＮＧＡＰＯＰＴＯＳＩＳＩＮＢＲＥＡＳＴＣＡＮＣＥＲＡＳＲＥＬＡＴＥＤＴＯＰＲＯＧＮＯＳＩＳＷｕＪｉｏｎｇ吴炅ＳｈａｏＺｈｉｍｉｎ邵志敏ＪｉａｎｇＭｉｎｇ江明ＨａｎＱｉｘｉａ韩企夏ＺｈａｎｇＴｉｎｇｑｉｕ张廷ＳｈｅｎＺｈｅｎｚ...

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简介：SrMoO4nanoplatesweresynthesizedbyafacilereversemicroemulsionmethodatroomtemperature.Energyevolutionofthisinsitugrowthprocesswasmonitoredbymeansofamicrocalorimeter.Asharpexothermicpeakfortheinitialreactionandtwodiscontinuousrelativelyweakexothermicpeaksforthesubsequentcrystalgrowthemergedonthemicrocalorimetricheatflowcurve.Basedontheinsituthermokineticdata,therateconstantsofthenucleationprocessandcrystallizationprocessat298.15Kwerecalculatedtobe4.078×10-3and5.033×10-4s-1,respectively.Thegrowthmechanismandenergyevolutionwereinvestigated.

简介：沉积氧需求(草皮)是为水质量分析并且为在河，湖，河口和海湾里当模特儿的水质量的一个关键参数。草皮能在实验室并且在situ被测量。然而，在里面situ技术看起来是为测量草皮，，的更好的途径它可能提供更代表性、精确的结果。以便优化设计在situ草皮测量房间，在圆柱的草皮测量房间的三维的流动地，通常使用为在situ大小，被使用基于RNG的k-数字地模仿了两倍方程骚乱模型。有三种不同流入管子配置的草皮房间被调查。结果证明那房间III在另外的图案上介绍明显的优点为在situ草皮测量，因为好流动混合能被完成，底部沉积暂停能在房间被避免。数字模拟结果被比较验证，存在结果源于实验室实验。设计反映数字模拟的结果的草皮测量房间成功地被测试为在新鲜、盐的水里的situ草皮大小。

简介：ThebasestructureofinsituTiCP/Fecompositesfabricatedunderindustrialconditionwaschangedbydifferentheattreatments.Erosiveweartestswerecarriedoutandtheresultswerecomparedwiththatofwear-resistantwhitecastiron.TheresultssuggestthatthewearresistanceoftheinsituTiCp/Fecompositeishigherthanthatofwear-resistantwhitecastironunderthesanderosivewearcondition.Thewearmechanismofthewear-resistantwhitecastironwasacycleprocessthatbasesurfacewaswornandcarbideswereexposed,thencarbideswasbrokenandwearpitsappeared.WhilethewearmechanismofinsituTiCp/FecompositewasacycleprocessthatbasesurfacewaswornandTiCgrainswereexposedanddropped.ThewearresistanceofinsituTiCp/Fecompositewaslowerthanthatofwear-resistantwhitecastironundertheslurryerosivewearcondition.Undersuchcircumstance,thematerialwasnotonlyundergoneerosivewearbutalsoelectrochemistryerosionduetothecontactwithwaterinthemedium.Thewearbehaviourscanbeacombinationoftwokindsofwearandthesanderosivewearisworsethanslurryerosivewear.

简介：一个近似方法被建立了计算沿着一张化学契约的在僵绳点的在一个分子的在一个电子上的潜在的行动的深度，由Dpb表示了。是新指示物能被用于预言一张化学契约的力量。在这个工作，作为为表明这个方法的实际应用，我们用方法沿着所有CH和NH化学药品契约计算了deoxyribonucleosides和ribonucleosides的Dpb。结果在对那些结果的公平同意以前报导了试验性、理论的观察。

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简介：Theadvancedfabricationofin-situdendrite/metallicglassmatrix（MGM）compositesisreviewed.Herein,thesemisolidprocessingandBridgmansolidificationaretwomethods,whichcanmakethedendriteshomogeneouslydispersedwithinthemetallicglassmatrix.Uponquasi-staticcompressiveloadingatroomtemperature,almostallthein-situcompositesexhibitimprovedplasticity,duetotheeffectiveblocktothefastpropagationofshearbands.Uponquasi-statictensileloadingatroomtemperature,althoughthecompositespossesstensileductility,theinhomogeneousdeformationandassociatedsofteningdominates.Highvolume-fractioneddendritesandnetworkstructuresmakein-situcompositesdistinguishinglyplasticupondynamiccompression.In-situcompositeexhibitshightensilestrengthandsoftening（necking）inthesupercooledliquidregion,sincethepresenceofhighvolume-fractioneddendriteslowerstherheologyoftheviscousglassmatrixathightemperatures.Atcryogenictemperatures,adistinguishingly-increasedmaximumstrengthisavailable;however,aductile-to-brittletransitionseemstobepresentbyloweringthetemperature.Besides,improvedtension—tensionfatiguelimitof473MPaandfour-point-bendingfatiguelimitof567MPaaregainedforZr58.5Ti14.3Nb5.2Cu6.1Ni4.9Be11.0MGMcomposites.Highvolume-fractiondendriteswithintheglassmatrixinduceincreasedeffectivenessonthebluntingandpropagatingresistanceofthefatigue-cracktip.Thefracturetoughnessofin-situcompositesiscomparabletothoseofthetougheststeelsandcrystallineTialloys.Duringsteady-statecrack-growth,theconfinementofdamagebyin-situdendritesresultsinenhancementofthetoughness.

简介：Liquefactiontestingatasaturatedloesssitewasperformedunderthesimulatedearthquakegroundmotioninducedbyartificialexplosionswithmicro-timeintervals.Thetimehistoriesofgroundacceleration,porewaterpressureandtheultimatevalueofresidualstrainwererecordedandmeasured.ThemodifiedFEQdraincomputationsoftwarewasusedtoanalyzetheliquefaction.Boththetestandtheanalysisconfumtheobjectiveoccurrenceofloessliquefaction.Furthermore,thereliabilityofthemethodoftheloessliquefactionanalysisbasedonFEQdrainandthemodelofporewaterpressuredevelopmentofsaturatedloessareexamined.

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简介：Inmarineengineering,thestrengthofasubmarinesedimentisanindispensableparameterforassessmentofconstruction.Inthisstudy,afree-fallconepenetratornamedIPenwasdevelopedtorealizearapidandefficientmeasurementofsedimentstrength.Theequipmentischaracterizedbymodulardesignandself-containeddataacquisition.Itisequippedwithanaccelerationsensor,awaterpressuresensor,andapiezoconepenetrationtest(CPTu)probe.Itisdesignedtobereleasedfromnearseabedsurfacewithareleaserandthenfallfreelytoprovideahigherpenetrationvelocity.Itsmaximumworkingdepthisapproximately2500mandmaximumpenetrationdepthisapproximately3m.Toderivethecorrelationbetweenpenetrationresistanceandsedimentstrength,acalibratorwasdevisedtodeterminethepenetration-ratefactor.Inaddition,thefactorapplicabletoinsitutestpointswasdeterminedinlaboratoryexperiments.InJune2016,theIPenwastestedinsituintheSouthYellowSea,China,duringasharedvoyagefundedbytheNationalScienceFoundation.Meanwhile,undisturbedcolumnsampleswerecollectedforlaboratorytests.Basedontheinsitutestresults,itwasdemonstratedthattheIPencouldaccuratelyrecordtheworkingstatesofvarioussensorsduringthefreelyfallingcourse.IPentestresultsreliablyreflectedthesedimentstrengthatallthetestingpointswhencomparedwithlaboratorycalibrationtests,insituvanetestsandpenetrationtests,laboratorypenetrationtests,andunconsolidatedandundrainedtriaxialcompressiontests.

简介：Thekineticstudyofin-situcopolymerizationofanilinewitho-andp-methylanilinebyammoniumpersulfate(APS)hasbeencardedout.UV-visspectroscopicmethodwasusedtoinvestigatethecourseofcopolymerization.StructuralcharacterizationwasstudiedbyFT-IRspectralanalysis.Theelectronicspectraofthecopolymerspoly(aniline-co-p-toluidine)andpoly(aniline-co-o-toluidine)showblueshift.Theshifthasbeenobservedinthebandscorrespondingtoπ→π~*transitionaswellasintheexcitontransition.Theincreaseinabsorbancerecordedduringthereactionfordifferentconcentrationofaniline,o-andp-toluidineatvariousintervalsoftimeofpolymerizationreactionindicatesagrowthinthepolymerformation.Theresultingfirst-orderrateconstantwasusedtocalculatetherateofcopolymerformationusingtherateequation-d[A]/dt=kc~n.

简介：Thepaperdiscussesthedifferenceintheformulationconceptsofalumina-spinel(spinelcontaining)andalumina-magnesia(spinelforming)castablesandtheinfluenceontheirphysicalproperties.Theindividualpropertyprofileisdiscussedwithrespecttotherequirementsofrefractoryliningmaterialsforthedifferentzonesofasteelladle.

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简介：Thereisawidespreadinterestinleadtelluride(PbTe)asagoodthermoelectricmaterial.WereportthetemperaturedependenceofthermopowerS(T)andresistanceR(T)forPbTeatthedifferentpressuresoffrom1.8GPato5GPaobtainedbyusingthecubicanvilhighpressureapparatus.Withincreasingpressure,R(T)andS(T)decrease.TheeffectofpressureonR(T)islargerthanthatonS(T).Thepowerfactorthatisdeterminedbythermopowerandresistivityincreaseswithincreasingpressure.Thismethodisanefficienttoolforsynthesizinggoodthermoelectricmaterialsathighpressureandhightemperature.