简介：Inthispaperasimulatedannealing(SA)algorithmispresentedforthe0/1mul-tidimensionalknapsackproblem.Problem-specificknowledgeisincorporatedinthealgorithmdescriptionandevaluationofparametersinordertolookintotheperfor-manceoffinite-timeimplementationsofSA.ComputationalresultsshowthatSAper-formsmuchbetterthanageneticalgorithmintermsofsolutiontime,whilsthavingamodestlossofsolutionquality.

简介：Chromatogramsoftocopherolhomologueswereobtainedbyacolumnofanalyticalsize(innerdiameter(ID)0.46cmcm×10cm)packedwithsilicagel.Adsorptionisothermsandfilmmass-transfercoefficientwereestimatedfromthechroma-togramsbyusingageneralratemodel,whichconsidersaxialdispersion,externalmass-transferandintraparticlediffusion.Basedontheobtainedisothermsandmass-transfercoefficient,theseparationprocessoftocopherolhomologuesonsimulatedmovingbed(SMB)wassimulatedusingthesamemodel.Accordingtothesimulatedresults,amixtureofα-,γ-,δ-tocopherolsandotherimpuritieswasseparatedonanSMBequipment.TheSMBequipmentwascomposedof8columnsofID2cm×10cm,with2columnsineachsection.Thesolidphasewassilicagel,andthemobilephasewasn-hexane/2-propanol(99/1byvolume).γ-andδ-tocopherolsofpuritygreaterthan98%wereobtainedwithrecoverygreaterthan98%.Theeffectsofoperatingconditions(flowratesandswitchingtime)ontheperformanceofSMBwerestudiedbybothsimulationandexperiments.Itwasfoundthatallthesimulationresultswerequiteclosetotheexperimentalresults.WeconcludethatprocessdevelopmentandoptimizationofoperatingconditionsofSMBbysimulationarefeasible.

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简介：许多尝试被做了为学习微粒媒介的行为为不同参数和某些组成的模型发现各种各样的关系。所有这些模型基于连续媒介的概念。用象分离元素方法那样的一个数字方法，一个人能弄明白什么正在发生通过一玷污粒子的不连续的媒介在介绍shear力量和变丑特征起主要作用。有易碎的粒子的媒介的行为与非易碎的粒子在这份报纸并且与集会的相比被学习。在这份报纸，夸张有弹性的模型被调查因为多角形的集会在二个不同测试系列塑造了粒子。另外，象卷紧张，磨擦的角度，膨胀性的角度和有弹性的模量那样的汇编的不同的宏参数的进化为非易碎、易碎的土壤粒子两个都在模拟测试期间被学习。在结束，参量的研究在集会行为上在粒子破裂的力量的效果上被执行。

简介：Aunifieddamageandfracturemodel,thecombinatoryworkdensitymodel,whichissuitableforei-thernon-crackedbodyorcrackedbodyhasbeensuggested.Inthepresentpaper,thedeformationandfractureofthetwokindsoftensilespceimenandTPBspecimenmadeof40Crsteelhavebeensimulatedbyusingthenewmod-eltogetherwiththelargeèlastic-plasticdeformationfiniteelementmethod.Theresultsgiveagoodpictureofthewholedeformationandfractureprocessesofthespecimensinexperiments;especially,theresultsontheTPBspecimencanbeusedtoobtaintherelationshipbetweenloadanddisplacementattheloadingpointP-Δ,andbetweencrackex-tensionanddisplacementattheloadingpointΔα-Δ,theresistancecurveJR-ΔaandthefracturetoughnessJIC.Alltheresultsareinremarkableagreementwiththoseobtainedbyexperiments.Thereforethemodelsuggestedherecanbeusedtosimulatecrackinitiationandpropagationinnon-crackedbodyandfractureinitiationandcrackstablepropa-gationincrackedbody.

简介：在在一个模仿的喝的水分发系统的简历电影开发的氯和氯胺消毒的效率被使用不是自养的细菌的传播板技术调查。实验与不锈钢(SS)与四个环形的反应堆(艺术)被执行或铜(Cu)材料滑动。结果证明有没有，细菌纳入了Cu幻灯片的少数一与纳入SS幻灯片的那些相比消毒。当水与氯胺被消毒时，简历电影上的不是自养的板计数(HPC)属于Cu幻灯片显著地更低(由3.46木头CFU/cm，2)比那些属于SS幻灯片。同样，Cu幻灯片上的简历电影HPC数字稍微更低(由1.19木头CFU/cm2)，比那些，在SS上，幻灯片与氯消毒了。处于一个伪稳定的状态，Cu幻灯片上的HPC层次能与氯胺与氯并且到大约0.9木头CFU/cm2被归结为3.0木头CFU/cm2。氯胺的增加导致了简历电影的更有效的减小不是自养的细菌比氯。我们断定通常在水分发系统采用的氯和氯胺层次不是足够的阻止微生物引起的简历电影的生长和开发。是的铜管子幻灯片和氯胺的联合消毒引起的最有效的联合被减少细菌的层次。

简介：拉制金属表被合拢与11%变硬工作。这些随后被使用，抵抗焊接构造X类型格子捆绑有0.17的核心亲戚密度的三明治面板。三明治面板在单轴的压缩被测试，为比较，有限元素的方法被采用模仿测量压缩压力紧张曲线。山峰压缩力量比金字塔形的核心三明治的高是32%。变硬工作的X类型格子结构的提高的机械性质主要与弯曲并且工作变硬的低度从直神气的贡献发源，而非二维的蹒跚的节点。

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简介：Theinfluencesofmagnesiumandferricionsintheirdifferentratiosontherateofgypsumcrystallizationwerestudiedundertheconditionssimilartothoseofwetflue-gasdesulfurization(WFGD).TheresultsshowthatadditionofbothMg2+andFe3+increasedinductiontimeanddecreasedthegrowthefficiencyupto50%comparedwiththebaseline(withoutimpurities)dependingontheconcentrationandthetypeofimpurity.TheeffectsofMg2+andFe3+onthesurfaceenergyandtherateofnucleationwereestimatedbyemployingtheclassicalnucleationtheory.Thesurfaceenergydecreasedby8%and14%withtheadditionof0.02mol/Lmagnesiumorferricions,respectively,comparedtothebaseline.Mg2+andFe3+madethegrowthrateofthe(020),(021)and(040)facesofgypsumcrystalamuchgreaterreduction,whichleadstotheformationofneedlecrystalscomparedtothebaselinewhichfavorstheformationofplateorflakes.Furthermore,anedgedetectionprogramwasdevelopedtoquantifytheeffectsofimpuritiesonthefiltrationrateofgypsumproduct.Theresultsshowthattheinhibitionefficiencyofthepresenceof0.02mol/LMg2+andFe3+onthefiltrationrateofgypsumcrystalrangesfrom22%to39%.

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