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简介：Onthebasisoftransformationkineticsandthermodynamics,theaustenite-ferritetransformationstarttemperatureduringdeformationwaspredictedforseveralgradesoflow-carbonsteelsunderdifferentprocessingconditions.ResultsindicatethatAr3dtemperaturemostlydependedonalloyingcompositionandprocessingparameters.Ar3dincreasedasstrainrateorstrainincreasedforthesamesteelgrade.Inviewofenhancementofdeformationontransformation,thebasickineticsmodelwasestablishedtosimulatedeformationinducedtransformationbehavior,usingwhichtheinfluenceofthedeformationstoredenergyandeffectivedeformationledgeonthenucleationandgrowthcanbeconsidered.Thesimulatedresultsareingoodagreementwithexperimentresults.

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简介：在现在的纸，有不同的磷内容的低碳钢脱衣用扔过程的成双的转动脱衣被生产。团结结构被学习，它的特征详细被分析。脱衣与模子铸钢相比拥有了好微观结构，这被发现。与增加磷内容，更多的铁酸盐与更好的谷物被形成了。

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简介：Theneedforcleanerfuelshasresultedinacontinuingworldwidetrendtoreducedieselsulfurandaromatics.Therearemanyapproachestoreducingsulfurandaromaticsindiesel.Mostofthemhaveacommondrawbackofhighcostbecauseofadoptingtwostagesofhydrotreatingandusingnoble-metalcatalyst,especiallyforreducingaromatics.TheattempttoresolvethisissuehasledtotherecentdevelopmentoftheSingleStageHydrotreating(SSHT)processbyResearchInstituteofPetroleumProcessing(RIPP),SINOPEC.TheSSHTprocessisasingle-stagehydrotreatingtechnologyforproducinglowsulfurandlowaromaticsdiesel.Theprocessusesoneortwonon-noble-metalcatalystssystemandoperatesatmoderatepressure.Whenrevampinganexistingunittomeetlowaromaticsdieselspecification,theonlythingtodoistoaddareactororreplacetheexistingreactor,Inpilotplanttests,theSSHTtechnologyhassuccessfullytreatedSRGO(StraightRunGasOil),LCO(LightCycleOil)ortheblendofthem.ItisshownthatbyusingtheSSHTprocessdieselwithsulfurof30ppmandaromaticsof15m%canbeproducedfromMiddle-EastSRGOanddieselwitharomaticscontentof25m%canbeproducedfromcrackedfeed,suchasFCC-LCO.Highdieselyieldandcetanenumbergain(fromcrackedfeedstocks)givetheSSHTtechnologyaperformanceadvantagecomparedtoconventionalhydrocrackingandhydrotreatingprocesses.Thelowerinvestmentandoperatingcostisanotheradvantage.ThefirstcommercialapplicationoftheSSHTtechnologyhasbeeninoperationsinceSeptember2001.

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简介：Carbonnanotubes(CNTs)canbefluidizedintheformoffluidlikeagglomeratesmadeofmanythree-dimensionalsub-agglomerates,havingamulti-stageagglomerate(MSA)structureandcontaininglargeamountsoftwistingCNTsofmicrometermagnitude.

简介：Activatedcarbonfiberisonekindofimportantadsorptionmaterials.Thesenovelfibrousadsorbentshavehighspecificsurfaceareasorabundantfunctionalgroups,whichmakethemhavegreateradsorption/desorptionratesandlargeradsorptioncapacitiesthanotheradsorbents.Theycanbepreparedasbundle,paper,clothandfelttomeetvarioustechnicalrequirement.Theyalsoshowreductionproperty.Inthispaperthelatestprogressonthestudiesofthepreparationandadsorptionpropertiesofactivatedcarbonfibersisreviewed.Theapplicationofthesematerialsindrinkingwaterpurification,environmentalcontrol,resourcerecovery,chemicalindustry,andinmedicineandhealthcareisalsopresented.

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简介：不同尺寸的喷雾器被一个安德森空气刺绣花样收集观察黑碳(BC)的详细形态学与另外的伴随的喷雾器化学上被分开的喷雾器，用与一个精力DispersiveX光线分光计(SEM-EDX)装备的一台扫描电子显微镜。结果显示大多数BC喷雾器是在直径并且与同类的表面的大约50nm的球形的粒子。结果也证明这些粒子与另外的喷雾器或与自己一起聚集形成更大在测微计范围聚结。这些50-nmBC球形的粒子的形状被发现很类似于免除石油动力的车辆的内燃机的BCparticles的。这些球形的BCparticles被显示与发现帮助usingMatrix的激光解吸附作用/电离蒂米夫莱特·马斯·斯佩克特罗梅特里(MALDI-TOF-MS)的以前报导的fullerenes不同。

简介：StructuresofaseriesofactivatedcarbonfibersweremodifiedbyimpregnatingthemwithorganicandinorganicmaterialssuchasMethyleneblue(Mb)、p-nitrophenol(PNP)、NaClorbyoxidizingwithKMnO4orHNO3.Theinfluenceofporefillingorchemicaltreatmentontheirxenonadsorptionpropertieswasstudied.TheexperimentalresultsshowthatMbandPNPfillingofactivatedcarbonfibersresultinthedecreaseofxenonadsorptioncapacitiesofthesetreatedACFs,whichisduetothedecreaseoftheirsurfaceareaandmicro-porevolume.However,theadsorptioncapacityincreasesgreatlywithoxidizingtreatmentofactivatedcarbonfibersby7mol/LHNO3.

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简介：XPS(X光检查光电子光谱学)分光计EscA-750被用来分析激活的碳，磁性的试剂和磁性的激活的碳的表面特性。他们的C原子价的分发和变化是坚定的。结论是磁性的试剂能化学上在激活的碳的表面上被吸附。在微观结构的磁性的试剂的吸附的机制的解释被讨论。

简介：Theadsorptionbehaviorofdyesonavarietyofsisalbasedactivatedcarbonfibers(SACF)hasbeenstudiedinthispaper.TheresultsshowthatthiskindofACFhasexcellentadsorptioncapacitiesforsomeorganic(dye)molecules.SACFcanremovenearlyallmethyleneblue,crystalviolet,bromophenolblueandEriochromeblueblackRfromwaterafterstaticadsorptionfor24h.at30℃.Theadsorptionamountscanreachmorethan400mg/gwhenadding50mgSACFinto50mldyesolution.Underthesameconditions,theadsorptionamountsofxylenolorangefluoresceinandEriochromeblackTwreelower.Ontheotherhand,theadsorptionamountschangealongwiththecharacteristicsofadsorbents.TheSACFsactivatedabove840℃,whichhavehigherspecificsurfaceareasandwiderporeradii,havehigheradsorptionamountsforthedyes.TheresearchingresultsalsoshowthattheadsorptionratesofdyesontoSACFsdecreasebytheorderofmethyleneblue,EriochromeblueblackRandcrystalviolet.

简介：Pitchbasedactivatedcarbonfiber(PACF)wasprepared,andinfluencesofpreparingconditionsuchasactivatedtemperatureandtimeontheyield.specificsurfaceareaofPACFanditsadsorptionbehaviortowardsn-butanethiolwerestudied.TheresultsshowedthatsimplePACFcouldnotremoven-butanethiolfromn-hexanesolution.Therefore,dispersionofsuitablecatalystsuchascobaltsaltonPACFisneeded,CobaltsolatdispersedPACFcanremoven-butanethiolquickly.

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简介：InviewofthelimitationsofaRn-GnmodelinthelowfrequencyrangeandthedefectsofanEn-Inmodelincommonusenow,thispaperbuildsacompleteEn-Inmodelaccordingtothetheoryofrandomharmonic.Theparametersforthelow-noisedesignsuchastheequivalentinputnoisyvoltageEns,theoptimumsourceimpedanceZsoptandtheminimumnoisefigureFmincanbecalculatedaccuratelybyusingthisEn-Inmodelbecauseitconsidersthecoherencebetweenthenoisesourcesfully.Moreover,thispaperpointsoutthatitwillcausethemaximum30%miscalculationwhenneglectingtheeffectsofthecorrelationcoefficient7.Usingtheseries-seriescircuitsasanexample,thispaperdiscussesthemethodsfortheEn-InnoiseanalysisofelectroniccircuitspreliminarilyanddemonstratesitscorrectnessthroughthecomparisonbetweenthesimulatedandmeasuredresultsoftheminimumnoisefigureFminofasinglecurrentseriesnegativefeedbackcircuit.

简介：TheauthorshavedetailedlyandsystematicallystudiedthecarbonisotopiccompositionofEarlyProterozoiccarbonaterocks.SampleswhicharealldolomicriteweretakenfromtheJianancun,DaguandongandHuaiyincunFormationsoftheHutuoGroupinWutaiCountyShanxiProvince,NorthChina.Atotalof209sampleswereanalysedfortheircarbonisotopecompositions,andthemeansamplingintervalwas6.9m.Carbonisotopeanalysisclearlyshowsδ13CshiftsattheboundarybetweentheJian’ancunFormationandDaguandongFormationandneartheboundarybetweentheDaguandongFormationandHuaiyincunFormation.LikecarbonisotopeshiftsattheCretaceous-Tertiary,Permian-TriassicandPrecambrian-Cambrianboundaries,thediscoveryofδ13CshiftsintheEarlyProterozoichasimportantsignificanceinfurtherstudiesonEarlyProterozoicbioticevolution,regionalandglobalstratigraphiccorrelation,andcarbongeochemicalcycles.