简介：借助Mathematics4.0软件、改进的广义幂指函数法研究了ModifiedImprovedBoussinesq方程,得到了方程的精确解,这种方法也适合研究其它的非线性发展方程.

简介：利用EXP-函数展开法及一个变换技巧,再次研究了ModifiedKdV方程,获得了一些与现有文献中的解的结构不相同的新类型的精确解,从而丰富了相关文献中关于ModifiedKdV方程的精确解的类型.

简介：Inordertoavoidtheinfluenceofnoisevarianceonthefilteringperformances,amodifiedadaptiveweightedaveraging(MAWA)filteringalgorithmisproposedfornoisyimagesequences.Baseduponadaptiveweightedaveragingpixelvaluesinconsecutiveframes,thisalgorithmachievesthefilteringgoalbyassigningsmallerweightstothepixelswithinappropriateestimatedmotiontrajectoryfornoise.Itonlyutilizestheintensityofpixelstosuppressnoiseandaccordinglyisindependentofnoisevariance.Toevaluatetheperformanceoftheproposedfilteringalgorithm,itsmeansquareerrorandpercentageofpreservededgepointswerecomparedwiththoseoftraditionaladaptiveweightedaveragingandnon-adaptivemeanfilteringalgorithmsunderdifferentnoisevariances.RelevantresultsshowthattheMAWAfilteringalgorithmcanpreserveimagestructuresandedgesundermotionafterattenuatingnoise,andthusmaybeusedinimagesequencefiltering.

简介：Amodifiedsuctioncaisson(MSC),whichwasreportedbytheauthorsofthispaperpreviously,comprisesanexternalshort-skirtedstructurethatisaddedtoaregularsuctioncaisson(RSC).IthasbeenprovedthatMSCscanimprovethelateralbearingcapacityandlimitthedeflectionofthecaissoncomparedwithRSCs.AseriesofmodeltestswereconductedtoinvestigateresponsesofMSCssubjecttoupliftloadinginsaturatedsand.TheeffectsofexternalskirtdimensionsontheupliftbearingcapacityofMSCswereconsidered.Inaddition,theinfluencesofthesealedtoplidoftheskirtedstructureontheupliftbearingcapacityandtheresultingpassivesuctionofMSCswerealsostudied.ItwasfoundthattheupliftbearingcapacitiesofMSCsare1.4-1.7timesthatofRSCs.Moreover,testresultsinserviceableconditionsshowthatthesealedexternalskirtedstructureofperspex-madesuctioncaissonssignificantlycontributedtotheupliftbearingcapacityasaresultofpassivesuction.

简介：Biocharisapotentialcarrierfornutrientsduetoitsporousnatureandabundantfunctionalgroups.However,rawbiocharhasalimitedorevennegativecapacitytoadsorbphosphate.Toenhancephosphateremovalandreducephosphatereleases,acidic,alkaline,andsurfactantpretreatments,followedbygranulationandferricoxideloading,wereappliedtorawbiocharpowder(Bp).Thealkalinepretreatmentprovedtobethemosteffectivemethodandexhibitedsignificantporeexpansionandsurfaceoxidation.Bg-OH-FOshowedthehighestphosphateremovalefficiencyat99.2%(initialphosphateconcentrationof20mg/L)aftergranulationandferricoxideloading.StaticadsorptionresultsindicatedthatapHvalueof4wasthemostsuitableforphosphateadsorptionbecauseofthesurfacepropertiesofBg-OH-FOandthedistributionofP(V)inwater.Highertemperaturesandalargerinitialphosphateconcentrationledtobetteradsorption;theadsorptioncapacityofBg-OH-FOwas1.91mg/gat313Kwithaninitialphosphateconcentrationof50mg/L.TheBg-OH-FOadsorptionprocesswasendothermicinnature.TheFreundlichmodelseemedtobetheoptimumisothermmodelforBg-OH-FO.Undercontinuousadsorption,theflowrateandbeddepthwerechangedtooptimizetheoperationconditions.Theresultsindicatethataslowflowrateandhighbeddepthhelpedincreasetheremovalefficiency(g)ofthefixedbed.ThebreakthroughcurvesfittedwellwiththeYoonNelsonmodel.

简介：为有高温度和湿度抵抗的电阻器的一种衬裙被修改环氧树脂，合适的nano-SiO_2在80degC增加了获得。修改环氧树脂衬裙的Thestructure，热稳定性，湿度抵抗，和词法特征被电的测试学习，红外线的系列(红外)分析，ands装电子显微镜学(SEM)。更紧缩、稳定的inter-crosslinkednetwork结构在修改环氧树脂衬裙被形成的结果表演与nano-SiO_2增加了，它极大地改进修改环氧树脂衬裙的表演。有大约2.71%的nano-SiO_2的衬裙，没有絮凝并且聚集，在房间温度为六保留了月，具有油漆电阻器的好稳定性，和表面是一致的，紧密并且在它上的空气洞外面。有油漆的如此的衬裙的抵抗的变化比率在高温度和湿度抵抗测试以后是在1000的不到一个。

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简介：AmodifiedLindstedt-Poincaré(LP)methodforobtainingtheresonanceperiodicsolutionsofnonlinearnon-autonomousvibrationsystemsisproposedinthispaper.Inthemodifiedmethod,nonlinearnon-autonomousequationsareconvertedintoagroupoflinearordinarydifferentialequationsbyintroducingasetofsimpletransformations.Anapproximateresonancesolutionfortheoriginalequationcanthenbeobtained.Theperiodicsolutionsofprimary,super-harmonic,sub-harmonic,zero-frequencyandcombinationresonancescanbesolvedeffectivelyusingthemodifiedmethod.Someexamples,suchasdampedcubicnonlinearsystemsundersingleanddoublefrequencyexcitation,anddampedquadraticnonlinearsystemsunderdoublefrequencyexcitation,aregiventoillustrateitsconvenienceandeffectiveness.UsingthemodifiedLPmethod,thefirst-orderapproximatesolutionsforeachequationareobtained.Bycomparison,themodifiedmethodproposedinthispaperproducesthesameresultsasthemethodofmultiplescales.