简介：Transversemixingcharacteristicsofsoluteintheopenchannelflowcanprovideusefulinformationforriverenvironmentalmanagement.Thelateralmixingcoefficientisacrucialparameterforreproducingthetransversemixingeitherbynumericalsimulationorbyanalyticalprediction.Sincethesolutemixingcanbegreatlyaffectedbythelateralvariationsinwaterdepth,mixingcoefficientshouldbedeterminedineachsub-section(i.e.,themainchannel,sideslopeandfloodplain)separately.Inthisarticle,thetransversemixinginasymmetrictrapezoidalcompoundchannelwasstudiedbasedonlaboratorymeasurementoflongitudinalandtransversevelocitycomponentsandlateraldistributionofsoluteconcentration.ThelateralmixingcoefficientwasestimatedbyadoptingdifferentSchmidtnumbersindifferentsub-sectionsdividedaccordingtothedevelopingtrendoftheeddyviscosity,andfinallyapiecewiselinearprofileofmixingcoefficientwasadoptedtoanalyticallypredictthetransversesoluteconcentration.Thecomparisonbetweentheanalyticallypredicteddataandthemeasuringsoluteconcentrationprovedthatthisisaneffectivewaytoestimatethelateralmixingintheopenchannelflowwithlateralvariationsinwaterdepth.

简介：Inabiasedphotorefractivecrystal,theprocessoftwoone-dimensionalwavesmixing,i.e.,thedynamicalevolutionofbothpumpbeamandsignalbeam,istracedbynumericallysolvingthecoupled-waveequation.Directsimulationsshowthatthepropagationandstabilityofthetwobeamsarecompletelydeterminedbythesystemparameters,suchastheexternalbiasfield,theintensityandthebeamwaistofthepumpbeam.Byadjustingtheseparameters,onecancontrolthestateoftwoGaussianwavesmixing.Thenumericalresultsarehelpfulforperformingatwo-wavemixingexperiment.

简介：Asaresultofthenonlineareffect,acousticstreaminghasbeenwidelyusedforincreasingthetransportcoefficientordrivingarotor,forexample,inresonantcavitiesandnon-contactultrasonicmotors.IthasbeendemonstratedbyexperimentsthatatemperaturegradienttransversetothewavepropagatingdirectioncansignificantlyincreasethevelocityofthestreamingBowsinresonantcavities.Tocheckwhetherthetransversetemperaturegradientcanalsoincreasetheworkingvelocityofacousticstreaming-drivenmotors,weinvestigatethisissuebynumericallysolvingthehydrodynamicequations.Itisfoundthatthevelocityoftherotoronlyweaklydependsonthetransversetemperaturegradient,e.g.,evenwithatemperaturedifferenceof40℃betweentherotorandthestator,thevelocityincreasesonly~8.8%.

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简介：TheSutongBridgeinChinaopenedtotrafficin2008,andisanarterialconnectionbetweenthecitiesofNantongandSuzhou.Itisacable-stayedbridgewithamainspanof1,088m.Duetoatightconstructionscheduleandlackofsuitableseismicdevicesatthetime,fixedsupportswereinstalledbetweenthepiersandthegirderinthetransversedirection.Asaresult,significanttransverseseismicforcescouldoccurinthepiersandfoundations,especiallyduringareturnperiodofa2500-yearearthquake.Therefore,thepiers,foundationsandfixedbearingshadtobedesignedextraordinarilystrong.However,whenlargerearthquakesoccur,thebearings,piersandfoundationsarestillvulnerable.Therecentrapiddevelopmentsinseismictechnologyandtheperformance-baseddesignapproachofferabetteropportunitytooptimizethetransverseseismicdesignfortheSutongBridgepiers.TheoptimizeddesigncanbeappliedtotheSutongBridge(asaretrofit),aswellasotherbridges.Seismicdesignalternativesutilizingviscousfluiddampers(VFD),orfrictionpendulumslidingbearings(FPSB),ortransverseyieldingmetallicdampers(TYMD)arethoroughlystudiedinthiswork,andtheresultsarecomparedwiththosefromthecurrentconditionwithfixedtransversesupportsandahypotheticalconditioninwhichonlyslidingbearingsareprovidedontopofthepiers(thegirdercanmove"freely"inthetransversedirectionduringtheearthquake,exceptforfrictionalforcesoftheslidingbearings).Parametricanalyseswereperformedtooptimizethedesignoftheseproposedseismicdevices.Fromthecomparisonofthepeakbridgeresponsesintheseconfigurations,itwasfoundthatbothVFDandTYMDareveryeffectiveinthereductionoftransverseseismicforcesinpiers,whileatthesametimekeepingtherelativetransversedisplacementsbetweenpiersandtheboxgirderwithinacceptablelimits.However,comparedtoVFD,TYMDdonotinteractwiththelongitudinaldisplacementsofthegirder,andhavesimplerdetail

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简介：Theglidingarccanofferhighenergyefficiencyandselectivityforchemicalreactionsandhasbeenwidelyappliedinmaterialprocessing,environmentalprotectionandotherindustrialareas.Butthedischargeproperties,measurementofplasmaparametersandrelatedphysicalpro-cessesoftheglidingarcdischargestillneedtofurtherstudied.Inthisstudy,theglidingarcwasdrivenbythetransversemagneticfieldtoproducethenon-equilibriumplasmaathighpressure.Theparametersoftheplasmaatourobservedpointweremeasuredbyopticalmethods.Theexperimentalresultshowsthattheelectrontemperatureisabout0.6eVandtheheavyparticletemperatureisapproximately2987±250K.

简介：Objective:Toobservetheeffectofoctyl-a-cyanoacrylateuponbonehealinganditsdegradationinvitroaftermiddletibialtransversefractureinrabbits,andtoestablishtreatmentofhigherefficacywiththeapplicationofoctyl-a-cyanoacrylate.Methods:MiddletibialtransversefracturemodelofNewZealandrabbitswasestablished.Intheexperimentalgroup,internalfixationwith2mmKirschnerwireswasperformedandthebrokenendswerefixedwithoctyl-a-cyanoacrylate.Inthecontrolgroup,onlyinternalfixationwith2mmKirschnerwireswasconducted.Animalswerekilledatpresettimeintervalsof2,4,6,8,10and12weekspostoperativelyandsampleswereharvested.Results:Twoweeksafteroperation,clearfracturelineswereobservedinboththeexperimentalandthecontrolgroups.Fibroussofttissueconnectionwasnotedbetweenthebrokenendsandtherewassofttissueadhesionaroundthefracturesite.Therewasnocallusformationandthebrokenendsweresurroundedbyadhesivesofttissues.Obviousexternalcallusformationwasconfirmedat8weeksafteroperationinbothgroupswithpartialdisappearanceoffracturelines.Tenandtwelveweeksaftertheoperation,fracturelinesdisappearedcompletelyandtherewasobviousexternalcallusformationandboneunion.Inthefourthweek,fibrouscellsandchondrocyteswerefoundtogrowintothecolloidandsurrounditatthe6thweek.Theadhesivematerialwasdegradedandgraduallyabsorbedatthe8thweek.Chondrificationwasobserved.Conclusions:Twoweeksafterfixationfortibialfractureinrabbits,octyl-a-cyanoacrylatebeginsinvivodegradation.Chondrocytesandfibrocytesgraduallygrowintothedegradationareaandsurroundtheadhesivematerial,whichbrokeintopiecesat8weeks.Completedegradationanddisappearanceoftheadhesivematerialispresentbetween10and12weeks.Nobarriereffecthamperingfracturehealingisnoted.

简介：这份报纸在在矩形的板结构的横向的颤动上制止僵硬的边的影响上论述分析研究。一个改进Fourier系列方法被采用与一般有弹性地制止的边界条件分析板结构的横向的颤动。一个双Fourier系列和八项辅助条款的线性联合作为板的曲折排水量的可被考虑的功能被寻求，是的每项条款多项式功能的联合和单个余弦系列扩大。辅助条款被介绍在边界保证并且改善原来的排水量功能和它的衍生物的光滑。几个数字例子被给表明当前的答案的有效性和精确性。自然频率和板的模式形状上的翻译、旋转的僵硬的影响被数字结果分析。结果证明翻译僵硬比旋转僵硬在自然频率上有更大的影响。旋转僵硬的小变化几乎没在板的模式形状上有小影响，通常是众所周知的。然而，当前的工作证明旋转僵硬价值的一个很小的变化可以导致方形的板结构的模式形状的一个大变化。

简介：Becauseofitsgoodconditionwithmechanics,logarithmicspiraldoublecurvearchbamhasbeenwidelyusedinthepracticalengineering.Theintroductionofanewmethodinhowtodividetransversejointinarchdamwillbegivenandthefurtherresearchofitscalculationhasbeendone.TheC++isusedinelectronicprocedureandthe3DsimulationhasbeenfinishedwithAutoCAD,whichwillprovidetheobjectmodelforcomputersimulationofthearchdamandthedivisionoffiniteelementmesh.Meanwhile,thismethodindividingthetransversejointinarchdamalsocanbetakenasthecalculatedbasisforthedesignandcalculationofarchdam,constructionloftingandthecalculationoftheworkamount.

简介：Afinitedifferencemethodispresentedtosimulatetransversevibrationsofanaxiallymovingstring.Bydiscretizingthegoverningequationandtheequationofstress-strainrelationatdifferentfrictionalknots,twolinearsparsefinitedifferenceequationsystemsareobtained.Thetwoexplicitdifferenceschemescanbecalculatedalternatively,whichmakethecomputationmuchmoreefficient.Thenumericalmethodmakesthenonlinearmodeleasiertodealwithandoftruncationerrors,O(Δt~2+Δx~2).Italsoshowsquitegoodstabilityforsmallinitialvalues.Numericalexamplesarepresentedtodemonstratetheefficiencyandthestabilityofthealgorithm,anddynamicanalysisofaviscoelasticstringisgivenbyusingthenumericalresults.

简介：AbstractPurpose:This study was designed to compare the clinical efficacy of "8" and "0" wire fixation systems combined with double-head cannulated compression screws or Kirschner wires for the treatment of transverse patellar fractures.Methods:From September 2011 to September 2018, patients with closed transverse patellar fractures treated with a double-head compression screw or Kirschner wire were included and analyzed retrospectively. Patients with patellar fractures combined with distal femoral fractures, tibial plateau fracture or preoperative lower limb dysfunction were excluded. The patients treated with the "8" tension band wire fixation system and Kirschner wire were taken as Group A; those treated with the "0" fixation system and Kirschner wire were taken as Group B; those treated with the "8" fixation system and double-head cannulated compression screw were taken as group C; and those treated with the "0" fixation system and double-head cannulated compression screw were taken as group D. Six weeks and one year after the operation and every month from the third month after the operation until the fractures healed, an X-ray examination was performed to identify fracture healing. The time of fracture healing and postoperative complications of the four groups were compared. One year after the operation, knee function was evaluated by Bostman’s score.Results:During the study period, 168 patients with patellar fractures were treated by operations, and 88 patients were excluded because the fracture type did not meet the requirements or because there were combined fractures of the distal femur or tibial plateau. As a result, 80 patients were included in this study, 20 in each group. All the patients were followed up for an average period of 12.2 months. Compared with Group A, patients in Group D presented less postoperative discomfort in the prepatellar region, quicker fracture healing, less fixation failure and better postoperative knee function scores (all p < 0.05). The incidence of internal fixation failure in Group (B+D) was lower than that in Group (A+C) (p > 0.05).Conclusion:The "0" wire fixation system combined with a double-head cannulated compression screw seems to be more beneficial than the other three fixation systems for the treatment of transverse patellar fractures.

简介：Anewmethodforconstructingthesymmetricformforthehyperbolicsystemsisintroduced.ThenanewsymmetricformoftheequationsofMHDtransverseflowisconstructedbyaddinganadditionalequation.Withthisnewform,weobtainthelocalexistenceofsmoothsolutionincludingthecasethattheinitialdensitymaytendtothevacuumstateatinfinity.Furthermore,theuniformlyaprioriestimationfortheclassicalsolutionsisestablishedandtheglobalsmoothsolutionsforakindofinitialdataareobtained.

简介：BasedontheSchaperythree-dimensionalviscoelasticconstitutiverelationshipwithgrowingdamage,adamagemodelwithtransversematrixcracksfortheunidirectionalfibrereinforcedviscoelasticcompositeplatesisdeveloped.ByusingKarmantheory,thenonlineardynamicgoverningequationsoftheviscoelasticcompositeplatesundertransverseperiodicloadingareestablished.ByapplyingthefinitedifferencemethodinspatialdomainandtheNewton-Newmarkmethodintimedomain,andusingtheiterativeprocedure,theintegral-partialdifferentialgoverningequationsaresolved.Someexamplesaregivenandtheresultsarecomparedwithavailabledata.

简介：为有一个横向的裂缝的一条半长带的飞机橡皮问题被调查。起始的问题被一个不可分的转变方法的使用与一个概括计划归结为一个一个维的连续问题。一个维的问题首先作为一个向量边界问题被提出，然后归结为三个单个不可分的方程(SIE)的一个系统。系统被一个直角的多项式方法和一个特殊概括方法的使用解决。这个工作的贡献是核的考虑在解决系统的固定奇特。相对半长带的裂缝长度和它的地点侧面的方面被调查简化问题陈述。这简化把起始的问题归结为二SIE的一个系统。

简介：Inageneralplane-parallelelectrodesystem,theedgeoftheelectrodewillunderminetheuniformityofthedielectricbarrierdischarge(DBD)becauseoftheinfluenceofthedistortedelectricalfield.Inthispaper,theinfluenceofthenon-uniformelectricalfieldontheedgeefectofDBDsinashort-gapisinvestigated.WepresentsomeoftheexperimentalresultsofDBDsproducedbythreekindsofconvex-sphericalelectrodes.Theresultsshowthatthereisadarkarea(thehomogeneousdischarge)inthecentralregionoftheelectrodeandabrighthalo(thefilamentarydischarge)intheouterperipheralregion,andtheradiusofthedarkregionisdeterminedbytheelectrodegeometry.Thecalculatedresultsofthetransverse(radial)fieldcomponentdistributiononthesurfaceoftheelectrodesshowthattheedgeefectdoesnotcomefromtheelectrodeedge,butthetransversefield.Thedischargehasenoughspacetobefullydevelopedandthenformatthefilamentarydischargeintheouterperipheralregionbecausethestreamerofthefilamentarydischargeisdriventomovealongthedirectionofthelongerpathbythetransversefield.Thus,thehomogeneousdischarge(theTownsendDBDoraglowDBD)couldnotbeproducedinthisarea.

简介：Theprincipleand1:3internalresonanceofarectangularthinplateinatransversemagneticfieldisinvestigated.Basedonthemagneto-elasticvibrationequationandelectromagneticforceexpressionsofthethinplates,thenonlinearmagneto-elasticvibrationdifferentialequationsofrectangularplatesunderexternalexcitationinatransversemagneticfieldarederived.Forarectangularplatewithonesidefixedandthreeothersidessimplysupported,thetwo-degree-offreedomnonlinearDuffingvibrationdifferen-tialequationsareproposedbythemethodofGalerkin.Themethodofmultiplescalesisadoptedtosolvethemodelequationsandobtainfourfirst-orderordinarydifferentialequationsgoverningmodulationoftheamplitudesandphaseanglesinvolvedviathefirst-orderorthesecond-orderprimary-internalreso-nances.Withanumericalexample,theamplitudefrequencyresponsecurves,timehistoryresponses,phaseportraitsandPoincaremapsofthefirsttwoordervibrationmodesviaprinciple-internalresonancearerespectivelycaptured.Andtheeffectsofexternalexcitationamplitudes,magneticfieldintensitiesandthicknessesonthevibrationofsystemarediscussed.Theresultsshowthattheresponseisdominatedbythelowmodewhenprinciple-internalresonanceoccurs.Theinternalresonanceprovidesamechanismfortransferringenergyfromahighmodetoalowmode.

简介：目的将为第三腰部的横向的过程症候群观察不同频率的electroacupuncture(EA)的临床的效果。有第三腰部的横向的过程症候群的80个盒子全部的方法A被使随机化进二个组，40在每个组。Ashi点在中等频率的electroacupuncture(EA)与K8832-T处理设备被连接组织，而Ashi点在传统的EA组与G6805-2电的激发器被连接。药品效果在10个处理会议以后被评估。结果在中等频率的EA组的治疗学的功效比传统的EA组的显著地好(P<0.05)。另外，在中等频率的EA组的管分数的改进比传统的EA组的更著名(P<0.05)。中等频率的EA是为第三腰部的横向的过程症候群并且因此值得推广有益于病人的容易、有效的治疗的结论。

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简介：ByemployingthereductiveperturbationtechniquewederivedaKadomtsev-Petviashviliequationforunmagnetizeddustyplasmas.Itsuggeststhatthenonlineardustacousticsolitarywaveswithadiabaticvariationofdustchargearestableeventherearesomehigherordertransverseperturbatoins.Thereareonlyrarefactivesolitarywavesforthissystemwhichhasbeenverifiedanalyticallyinthispaper.