简介：Tostudytheroom-temperaturestabledefectsinducedbyelectronirradiation,commercialborosilicateglasseswereirradiatedby1.2MeVelectronsandthenultraviolet(UV)opticalabsorption(OA)spectraweremeasured.Twocharacteristicbandswererevealedbeforeirradiation,andtheywereattributedtosilicondanglingbond(E’-center)andFe3+species,respectively.TheexistenceofFe3+wasconfirmedbyelectronparamagneticresonance(EPR)measurements.Afterirradiation,theabsorptionspectrarevealedirradiation-inducedchanges,whilethecontentofE’-centerdidnotchangeinthedeepultraviolet(DUV)region.TheslightlyreducedOAspectraat4.9eVwassupposedtotransformFe3+speciestoFe2+speciesandthistransformationleadstotheappearanceof4.3eVOAband.Bycalculatingintensityvariation,thetransformationofFewasestimatedtobeabout5%andtheopticalabsorptioncrosssectionofFe2+speciesiscalculatedtobe2.2timeslargerthanthatofFe3+species.Peroxylinkage(POL,≡Si–O–O–Si≡),whichresultsina3.7eVOAband,isspeculatednottobefromSi–ObondbreakbutfromSi–O–Bbond,Si–O–Albond,orSi–O–Nabondbreak.Theco-presencedefectwithPOLisprobablyresponsiblefor2.9-eVOAband.

简介：Itisimportanttoquantitativelyunderstandthemethaneadsorptionandtransportmechanismincoalforanevaluationofthereservesandforitsproductionforecast.Inthiswork,ablockcoalsamplewaschosentoperformtheCH4adsorptionexperimentsusingthegravimetricmethodattemperaturesof293.60K,311.26K,332.98Kand352.55Kandpressuresupto19MPa.TheexcessadsorptioncapacityofCH4indryblockanthraciteincreased,followedbyasequencedecreasewiththeincreasingpressure.Hightemperaturerestrainedthegrowthoftheexcessadsorptionduetothattheadsorptionisanintrinsicallyphysicalandexothermicprocess.Theexcessadsorptionpeakdecreasedslowlywiththeincreaseoftemperatureandintersectedatapressureofmorethan18MPa;meanwhile,thepressureattheexcessadsorptionpeakincreased.Theexistingcorrelationswereexaminedintermsofdensityratherthanpressure.TheDR+kcorrelation,withanaveragerelativedeviationof±0.51%,fittedourdatabetterthantheothers,withanaveragerelativedeviationofupto2.29%.ThetransportationcharacteristicsofCH4adsorptionwasalsoinvestigatedinthisstudy,includingtheadsorptionrateanddiffusioninblockcoal.Thekineticdatacouldbedescribedbyamodifieduniporemodel.Theadsorptionrateswerefoundtoexhibitdependenceonpressureandtemperatureatlowpressures,whilethecalculateddiffusivitiesexhibitedlittletemperaturedependence.Inaddition,thekineticcharacteristicswerecomparedbetweenCH4andCO2adsorptionontheblockcoal.TheexcessadsorptionratiosofCO2toCH4obtainedfromtheDR+kmodeldecreasedwiththeincreasingpressure.

简介：当branes的二栈是到对方的没放的平行时，我们概括在branes的二平行的栈之间的远程的相互作用的计算到各种各样的案例。我们分类相互作用的性质(排斥或吸引人)为每个专辑，大小写和这个分类能被用来认为在象brane界限状态那样的二个复杂brane系统之间的远程的相互作用的性质正当。我们将在这份报纸提供明确的例子表明这。

简介：结晶化行为(丁烯succinate)(PBS)poly，有泥土的大量内容的nanocomposites被揭示。它感兴趣发现PBS的结晶化率在泥土的相对低的内容显然被加速；当延迟的结晶化动力学和PBS的减少的crystallinity与更高的泥土内容在nanocomposites被发现时。二interplaying效果在nanocomposites存在，即，成核上的泥土的抑制效果和水晶生长上的泥土的templating效果，被澄清贡献这吸引人的结晶化行为。

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