简介：Thisresearchaimstoimprovetheforecastingprecisionofelectricquantity.ItisdiscoveredthatthetotalelectricityconsumptionconsiderablyincreasedduringtheSpringFestivalbytheanalysisoftheelectricquantitytimeseriesfrom2002to2007inShandongprovince.Thefestivalfactorisascertainedtobeoneoftheimportantseasonalfactorsaffectingtheelectricquantityfluctuations,andthemultiplicationmodelforforecastingisimprovedbyintroducingcorrespondingvariablesandparameters...

简介：与连续、慢的氧版本特征，过氧化钙(CaO_2)是在污染地下水的简历补习为氧气的微生物供应氧的新来源。批实验被进行评估在包含CaO_2的媒介与水，高酸碱值的规定，以及混合氧气的微生物的生长反应的氧版本率ofCaO_2。结果证明氧版本CaO_2comprises处理三个阶段。当CaO_2的增加的重量增加了，在第一个阶段，严厉地增加的水的溶解的氧层次，和一般水准，氧版本率增加了。然而，率几乎在后者阶段保持不变并且是约0.48和0.084mgO_2?h~(-1),分别地。作为媒介，钾dihydrogen磷酸盐(KH_2PO_4)和硫酸铵的必要部件((NH_4)_2SO_4)能在某个比率调整CaO_2from12.1引起到6.5的范围的酸碱值-8.5，它对微生物引起的生长有用。另外，在包含CaO_2的媒介观察的diauxicgrowth曲线建议混合氧气的微生物的生长能被CaO_2的增加刺激。

简介：Inpastterroristattacks,vehicleborneimprovisedexplosivedevices(VBIED)havebeentheprimarymannerofattackingbuildingsandinfrastructures.Preventingunauthorizedvehiclesfromapproachingaprotectedareawithanti-ramsystemswouldmaintainanestablishedstandoffdistanceagainstmovingandstationaryvehiclesandconsequentlyreduceblastanddebristhreats.Thisstrategyhasbeenconsideredthefirstlineofdefenceagainstterrorists.Severaltypesofanti-ramdeviceshavebeendevelopedinaccordancewithU.S.DepartmentofStateK-ratingcriteria,forexample,wedgebarriers,risingbeams,sliding/swinggates,anddroparms.However,thesedevicestypicallyneedadeepfoundationforinstallationandcan'tbeimplementedintomanylocationswhereadepthofexcavationislimitedinordertoprotectutilitylinesofbuildingsandinfrastructures.Thispaperpresentsarecentdevelopmentofaseriesofshallowfootinganti-rambollardsystems(SFABS)thatcansatisfyK-12ratingwithonlyfive-inchthickfooting.Ahigh-fidelityphysicsbasedfiniteelementtechniquewithavehiclecrashmodelisusedforpredictinganti-ramcapacityanddeterminingdesignparametersoftheSFABS.Full-scalevehiclecrashtestsofthedevelopedSFABSsystemshavebeencarriedouttovalidatethedesignandanalysis.

简介：Asecond-ordermixingdifferenceschemewithalimitingfactorisdeducedwiththereconstructiongradientmethodandappliedtodiscretizingtheNavier-Stokesequationinanunstructuredgrid.Thetransformofnonorthogonaldiffusionitemsgeneratedbytheschemeindiscreteequationsisprovided.TheDelaunaytriangulationmethodisimprovedtogeneratetheunstructuredgrid.ThecomputingprogrambasedontheSIMPLEalgorithminanunstructuredgridiscompiledandusedtosolvethediscreteequationsoftwotypesofincompressibleviscousflow.Thenumericalsimulationresultsofthelaminarflowdrivenbylidincavityandflowbehindacylinderarecomparedwiththetheoreticalsolutionandexperimentaldatarespectively.Intheformercase,agoodagreementisachievedinthemainvelocityanddragcoefficientcurve.Inthelattercase,thenumericalstructureanddevelopmentofvortexunderseveralReynoldsnumbersmatchwellwiththatoftheexperiment.Itisindicatedthatthefactordifferenceschemeisofhigheraccuracy,andfeasibletobeappliedtoNavier-Stokesequation.

简介：Thestressintensityfactor(SIF)isacriticalparameterassociatedwiththefracturebehaviourofmaterials.Inthispaper,weselectthedisplacementfunctionaroundacracktipastheshapefunctionofthedigitalimagecorrelation(DIC),whichmakesitpossibletodirectlycalculatetheSIFbythecorrelationscheme.Moreover,weuseanon-rectangularsubset,whichcanreducetheinfluenceofplasticdeformationandcrackwidthontheDICmeasurementaccuracy.WemeasuredtheSIFofamodeIcrackinasuper-hardaluminiumalloyspecimentoverifytheperformanceoftheproposedmethod.OurexperimentalresultsshowthataDICwithaspecificshapefunctioncanbeusedtoaccuratelyandefficientlycalculatetheSIF.Furthermore,wealsopresentapracticalapplicationofourproposedmethodfordeterminingtheSIF,crackpropagationangleandcracktipdisplacement.

简介：MicrocystisaeruginosaFACHB905被用作一个模型有机体在生长和microcystin(MC)上学习小水簇(SWC)的效果有毒的cyanobacteria的生产。结果证明SWC能刺激Microcystisaeruginosa的生长，它在一个30-d处理以后导致了增加的房间数字和更高特定的生长率。细胞形态学显示Microcystisaeruginosa处于生长的一个更好的状态，并且在SWC划分比在正常水聚类的是容易的更多。在在Microcystisaeruginosa的10d的起来调整的MC合成和渗出，和细胞内MC满足的SWC处理随后在第20天以后减少了。而且，细胞的光合的颜料内容被SWC暂时刺激。一个可能的原因是SWC由支持光合作用刺激了生长，而增加的MC生产与颜料内容相关。

简介：在墙附近的制作反强风墙和分发法律上的大量冲击波效果被在表面爆炸测试方法附近使用调查并且女性。反强风墙的前部和背后上的压力时间历史和变化法律在不同爆炸距离和炸毁的变化的测试，以及在在测试和数字计算之间的比较被采用。当爆炸距离超过2m时，反强风墙上的大量冲击波效果与计算实质上一致的测试结果表演在表面爆炸下面用标准结果，在墙后面的过压的分发基于small-large-small根据变化法律被获得。在墙后面的山峰过压通常由1.52.5multiples，和在墙后面的保护的造的山峰过压出现在墙高度，这也被表明能被使用制作反强风墙有效地减少。

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