简介：Toensureareliableoperationofthe2.5MWgasturbineengine(GTE-2.5)withtheinletgastemperatureTIT=1623K,studieswereperformedoverthethermalstateofthenozzleguidevanesandrotorbladeswiththetemperatures,ratesandflowsoftheworkingmediaandcoolingairsimulatingallthepotentialturbinestageoperatingduties.Thesteadystateandthermal-cyclictestshavingbeenaccomplished,therewasnovisibledefectontherotorbladesandthenozzlevanes.Afterwards,theysurvivedtheendurancetestsattheratedcooling.Therefore,thefunctionalityoftheshellthin-wallhybridnozzlevanesandrotorbladesunderthevariableoperatingdutiesofthegasturbineatthe'shock'and'cyclic'loadsoftheworkingmediatemperaturevariationshasbeendemonstrated.

简介：Cyclicsixmembereda-aminonitrilehaveprovedtobeveryversatilesyntheticintermediatesandhavebeenwidelyusedintheconstructionofalargenumberofindolealkaloids.Inordertoobtainsomeinformationaboutthemechanisnofelectrochemicalsynthesisofaaminonitrile.ElectrochemistrybehaviorsthatincludecyclicvoltammetryandlinearsweepvoltammetryofcyclictertiaryamineswhichincludingN-benzylpiperidine(NBP),1-(l-Methoxycarbonylethyl)piperidine(MCEP),N-methylcarbonylppiperidine(NMCP),Nethylpiperidine(NEP)wasstudied.

简介：Sofar,theacyclichypergraphhastwodifferentdefinitions.Oneisbasedonthecyclomaticnumberofthehypergraph,whereastheotherarisesfromtheacyclicschemaoftherelationaldatabaseinthecomputerscience.Inthispaper,itisfirstprovedthatthesetwodefinitionscoincidewitheachothercompletely.ThenweprovethatahypergraphHisnotacyclic,orcyclic,ifandonlyifitcontainsaspecialpartialhypergraphnamedhypercircuit.Inaddition,weshowthatHhasl(H)differenthypercircuits,wherel(H)isaparameterusedtodecidewhetherHisacyclicorcyclic.

简介：Abstract.LetGbeasimplegraph.ThecyclicbandwidthsumproblemistodeterminealabelingofgraphGinacyclesuchthatthetotallengthofedgesisassmallaspossible.Inthispaper,someupperandlowerboundsoncyclicbandwidthsumofgraphsarestudied.

简介：AsimplecyclicelastoplasticconstitutivemodelforsandisproposedbasedontheUHmodelforoverconsolidatedclay.Theproposedmodelhasthefollowingfeatures.First,inordertodescribethestress-inducedanisotropyinsand,arotationalhardeningruleisintroducedfortheevolutionoftheyieldsurfaceaxiswithdevelopmentofplasticdeviatoricstrainintheprincipalstressspace.Second,therelationshipbetweentherotationalaxisandstress-inducedanisotropyismodeledbyintroducingtheslopeofrotationalaxisintotheyieldfunction.Theflatnessoftheyieldsurfacecanbedeterminedbytheslopeofrotationalaxis.Finally,arevisedunifiedhardeningparameterisproposedtoincorporatethestress-inducedanisotropy.Themodelcapabilityindescribingthecyclicresponseofsandisverifiedbycomparingthesimulationswithavailabletestresults.

简介：

简介：Microcalorimetrywasdevelopedtodeterminethermalconductivities(λ)ofthermalinsulatorswithhollowcylindricalshapes,Aspecialdeviceofspecimentwithresistancethreadswrappedonitssurfaceandelectricheaterplacedinitsholewasdesignedtomeettheneedsofdeterminingλwithoutusingstandardsubstancestocalibratetheinstrument.Aformulaforcalculatingthevalueofλwasderived.Byheatingintheholeandonthesurfaceofthespecimenrespectively,thevaluesofλcanbeobtainedconvenientlybythistechnique.Themethodwastestedwithteflon,plexiglass,quartzglassandp[olyethylene.Theexperimentalvaluesofλforthefoursubstancesagreewellwiththeliteraturesones.Erroranalysiswasalsomadeontheexperimentaldata.Itwasfounrthatthemainfactorsaffectingvaluesofλare:(1)Theerroreofdeterminingthevaluesofheatcumulatedinspecimenandmaterialsinthespacearounditand(2)theerroreofdeterminingthevaluesofinnerandouterradiiofcylindricalspecimen.λ

简介：Theeffectivethermalconductivityofcompositeswithellipsoidalfillersisanalyzedbyusingahomogenizationmethodthatisabletorepresentthemicrostructureprecisely.Inthisstudy,variousparameterssuchasthevolumefraction,shape,anddistributionofthefillerarequantitativelyestimatedtounderstandthemechanismsofheattransferinthecomposite.First,thermalboundaryresistancebetweenresinandfillerisimportantforobtainingcompositeswithhigherthermalconductivity.Second,theanisotropyoftheeffectivethermalconductivityarisesfromcontactbetweenfillerinthecaseofellipsoidalfillerandproduceslowerthermalresistance.Finally,thefillernetworkandthermalresistanceareessentialfortheheattransferincompositesbecausethepathofthermalconductionisimprovedbycontactbetweenneighboringfillerparticles.

简介：AdsorptionequilibriumexperimentsofphenolontheNKAIIresinareseparatelyconductedinthepresenceandabsenceofultrasoundatambienttemperature.Theisothermofphenolonthepolymeradsorbentinthepresenceofultrasonicfieldisfirstlyreported.Resultsindicatedthattheisothermofphenoldeterminedinthepresenceofultrasoundislowerthanthatintheabsenceofultrasound.Inaddition,experimentsalsoshowthattheuseofultrasoundtotheadsorptionsystemofthephenolaqueoussolutionandNKAⅡresincouldcausetherisingofthetemperatureofthesystemintheorderof6^-C.TheeffectofultrasoundontheisothermofthephenolontheNKAⅡresinmostlyascribestothethermaleffectandthenon-thermaleffectofultrasonicfield.andtheroleofthelaterisgreaterthanthatoftheformer.

简介：

简介：LetRbeafinitechainringwithmaximalidealγandresiduefieldF,andletγbeofnilpotencyindext.ToeverycodeCoflengthnoverR,atowerofcodesC=(C:γ0)(C:γ)(C:γi)(C:γt-1)canbeassociatedwithC,whereforanyr∈R,(C:r)={e∈Rn|re∈C}.UsinggeneratorelementsoftheprojectionofsuchatowerofcodestotheresiduefieldF,wecharacterizecycliccodesoverR.ThischaracterizationturnstheconditionforcodesoverRtobecyclicintooneforcodesovertheresiduefieldF.Furthermore,weobtainacharacterizationofcycliccodesovertheformalpowerseriesringofafinitechainring.

简介：这份报纸处理当模特儿，分析和优化真实工业问题的一种特定的类型。问题的这个班作为周期在文学被知道升起安排问题(CHSP)。在问题的如此的班上，几个工作不得不根据一个订的洗澡序列通过一根生产线流动。CHSP在生产设备出现完成大量生产并且在行动的一个重复序列找hoist。在这份报纸，我们开发P时间的Petri网模型代表行为并且验证基本生产线的某些质的性质。后来，生产线的复杂配置被建模并且他们的性质象工作需要的reachability(周期的操作)那样，没有僵局，资源分享和管理被检查并且验证。数学分析和所有建议Petri网络模型的模拟研究用Petri网络和一个视觉对象网络++工具的数学臀部被执行。纸的第二部分处理线性编程建模优化每种线配置处理的一个混合整数的发展。有周期的处理序列的学习系统的最佳的生产计划被定义，每种配置的最佳的周期的安排的可行性被证明。

简介：Residualstressevolutionregularityinthermalbarrierceramiccoatings(TBCs)underdifferentcyclesofthermalshockloadingof1100℃wasinvestigatedbythemicroscopicdigitalimagecorrelation(DIC)andmicro-Ramanspectroscopy,respectively.Theobtainedresultsshowedthat,asthecyclenumberofthethermalshockloadingincreases,theevolutionoftheresidualstressundergoesthreedistinctstages:asharpincrease,agradualchange,andareduction.TheextensionstressneartheTBCsurfaceisfasttransformedtocompressiveonethroughjustonethermalcycle.Afterdifferentthermalshockcycleswithpeaktemperatureof1100℃,phasetransformationinTBCdoesnothappen,whereasthegeneration,development,evolutionofthethermallygrownoxide(TGO)layerandmicro-cracksarethemainreasonscausingtheevolutionregularityoftheresidualstress.

简介：到进堆积的无弹性的行为的获得卓见，在干燥的沙嵌入并且使遭到了到周期的侧面的装载的垂直堆积的反应在在Laboratoire中央desPontsetChaussées进行的离心机测试试验性地被学习。周期的装载的三种类型被使用，二不对称并且关于卸掉的堆积对称的。有深度的土壤僵硬的一个近似方形根的变化从间接飞行中的密度大小，重新组成的样品上的实验室测试，和生长得很好的实验关联被获得。测试用一个周期的非线性的Winkler春天模型被模仿，它描述无弹性的现象的完整的范围，包括堆积从并且到土壤的分离和重新附件。模型由能够复制的三个数学表达式组成许多单音的补品和周期的试验性的p-y弯。参数图形地被解释的关键模型并且与土壤行为有关的物理意思。有离心机测试结果的比较表明捕获堆积土壤相互作用的几个特征的模型和它的能力的一般有效性，包括：在装载的一个早阶段玷污plastification，在堆积，和僵硬和力量的上面的部分附近由于一个松驰地区的形成“拧”行为由于周期的装载变化。从里斯等的古典曲线的曲线从测试结果和建议模型导出的p-y的比较，以及那些。(1974)为沙，也被介绍。

简介：ThecompositionandstructureofcyclicsulfoxidederivativePd(Ⅱ)complexwereinvestigated.Thecoordinatednumberwasstudiedwithslopemethod.Thecoordinationnumberis2inloweracidity,butitis3inhigheracidity.Fourmethods,UV(ultraviolet)spectra,FrIR(Fouriertransforminfrared)spectra,1H-NMR(nuclearmagneticresonance)spectra,and13C-NMRspectra,wereusedtodeterminethecoordinatedatomincomplex.PdiscoordinatedwithOandSatominS=Ogroupinloweraciditymedia.Theconversionofcoordinationbondappearswithanincreasingtime.PdiscoordinatedwithSatominS=Ogroupinhigheraciditymedia,andinter-ligand-transferreactionoccurs.

简介：Thereactionofcrosseddiperoxidationbetweenthecyclicketonesandthealkylketoneswasinvestigated.Thereactionisacompetingindifferentketones.Itisslightlyfavorabletoresultingincrossedketonediperoxideandtoresultingincrossedcycloketonediperoxidewhenthecycloketonereactswiththealiphaticketone.

简介：Microwaveradiationwasappliedtothedetectionofmetamizoiesodiumbycyclicvoltammetry.TheelectrochemicalcharacteristicsofmetamizoiesodiumwerestudiedbycyclicvoltammetryatGCelectrodeundermicrowaveradiationandaconsiderablecurrentenhancementwasobservedformetamizoiesodiuminaqueous0.05mol/LH_2SO_4.Undertheoptionalconditions,metamizoiesodiumwasdeterminedintheabsenceandpresenceofmicrowaveactivation.Intheabsenceofmicrowaveactivationcyclicvoltammogramofmetamizoiesodiumshowsgoodlinearrelationshipinaconcentrationrangeof8.0×10~(-5)—1.0×10~(-3)mol/Linaqueous0.05mol/LH_2SO_4withadetectionlimitof6.75×10~(-6)mol/L(S/N=3)andtheequationoflinearregressionisI_p=12.973c-0.1905(R~2=0.9996,n=6);inthepresenceof80Wmicrowaveactivationcyclicvoltammogramofmetamizoiesodiuminshowsgoodlinearrelationshipinaconcentrationrangeof4.0×10~(-5)—1.0×10~(-3)mol/Linaqueous0.05mol/LH_2SO_4withadetectionlimitof4.41×10~(-6)mol/L(S/N=3)andtheequationoflinearregressionisI_p=25.107c-0.1193(R~2=0.9973,n=7).Thecurrentinthepresenceof80Wmicrowaveactivationincreasestoabout2ordersofmagnitudecomparedwiththatintheabsenceofmicrowaveactivation.Theproposedmethodinthepresenceofmicrowaveactivationshowedhighselectivityandsensitivity,andthesamplingofthedisposalmethodissimple.ThemethodwasverifiedbythedeterminationofMetamizoieSodiumtabletwithsatisfactoryresults.

简介：UsingFX-4000strainunit,theprolierationinhumanlungadenocarcinomaA549cellsthatunderwentmechanicalstrainofdifferentwaveform、frequencyanddurationwerestudied.Imageanalysisrevealedthatcellularproliferationrate(PR)reducedsignificantlyaftercellsweresubjectedtosquarewavewith0～20%elongationatfrequency30,40,50and60cycles/minfor2h.ThePRhadnodistinctdifferenceatheartwave,trianglewaveandsinewavegroupcomparedwithcontrol.ItisconcludedthatsquarewaveandhigherfrequencyplayanimportantroleininhibitingA549cellsproliferation.

简介：在这份报纸，我们建立周期的减小(CR)的集中结果为一个班的算法弱没有第n个最大的特征值的部分复合都是的假设的二次的矩阵多项式等于到2的overdamped。我们的结果能被郭，Higham和Tisseur认为是那的补充[暹罗J。矩阵肛门。Appl，30(2009)，pp。1593-1613]。数字例子显示CR算法的集中行为被我们的理论大部分支配。

简介：TheelastoplasticmodelinthedeviatoricstressspaceisconstructedtodescribethecyclicundrainedcreepingbehaviourofsoftclaysundercyclicstressbyusingMisesyieldcriterionandtheconceptofafieldofhardeningmoduli.Furthermore,theeffectofmodelparametersonthedeformationisstudied,andamethodisgiventodeterminequantitativelymodelparametersfromresultsofcyclictriaxialtestsofthesaturatedsoftclay.