简介：InthisarticlethespectrumofsupportsizesofacompletelydecomposableTS(ν,,4)foranypositiveintegerν≡1,3(mod6)isdetermined.

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简介：Anunderstandingofthetransportmechanismofgravel-bedriversisveryimportantfortherivermanagementandengineeringworks.Themainobjectiveofthisstudywastoconductaseriesoflaboratoryexperimentinasteepflumetoinvestigatetheparticlesegregationandthetransportrateofnonuniformgravel.Mediansizesof15mmand7.5mm,andgradationcoefficientsof1.5and2.0wereselectedfortheparticlesizedistributionsofnonuniformgravel.Inadditiontothe36setsofdatacollectedinthisstudy,635setsofexistingdataforgravelwithbothnonuniformandnearlyuniformsizeswereanalyzed.Accordingtotheresultsofthesieveanalysisandtherelatedtheory,hidingfunctionsforbothparticlesizedistributionsofthisstudywerederived.AnattemptwasmadetodevelopanEinstein-typetransportrelationshipfornonuniformgravelusingdimensionlessparameterswithmeansizeasarepresentativeparticlesize.AmodifiedSchoklitsch-typesedimenttransportequationwithacriticalunitflowdischargewasalsodevelopedtoreasonablypredictthetransportrateofgravels.Inaddition,anartificialneuralnetwork(ANN)modelwithaback-propagationnetwork(BPN)algorithmwasalsoappliedinthisstudy.

简介：让N是组G的正常亚群。假定积极整数m>n是N与的二种最长非中央的G-conjugacy班尺寸(m，n)=1。这份报纸的目的是决定N的结构并且在m是方形的那个假设下面在N给N-conjugacy元素的班尺寸免费。

简介：让G是有非中央的Sylowr亚群R的一个有限的组，Z(G)G的中心，和NG的正常亚群。这篇论文的目的是在N包含的假设下面决定N的结构R和N的每个元素的G-conjugacy班尺寸是任何一个1或m。特别地，如果，N是Abelian，这被显示出N∩Z(G)=1并且N的每个元素的G-conjugacy班尺寸是任何一个1或m。

简介：单个粒子的动态行为在在一张煤气的使流体化的床上的粒子混合物的混合/分离的过程期间被分析。分析基于从分离粒子模拟产生的结果，与轨道和对单个粒子起作用的力量的焦点。典型粒子被选择代表三种粒子运动：开始在床并且最后的底部部分的一个漂浮物粒子在床的最高的部分使流体化；开始在床并且最后的最高的部分的一个投弃货物粒子在底部呆在床的使流体化de的层；并且间歇地正在加入顶的一个投弃货物粒子使流体化并且底部使流体化de的层。一个粒子的运动在宏观或全球的规模是混乱的，但是能很好以它的相互作用在显微镜的规模被解释的结果表演与另外的粒子，particlefluid相互作用力量，和本地流动结构强迫，接触调节。他们也为建立一个合适的方法连接在不同时间和长度规模产生并且当模特儿的信息加亮需要。

简介：基于成核底层被激活由的假设在冷却下面宪政在起始的团结期间由邻近的谷物生长和溶质分发产生了，为有谷物精炼的铝合金的谷物尺寸的计算的一个模型被开发，在成核被二个参数统治的地方，i.e.growth限制因素Q并且在使参数P.The生长凉下来下面，限制因素Q与起始的率成正比在使开发和罐头凉下来下面宪政与强壮的潜在的成核粒子在合金直接被用作谷物精炼的一个标准。undercoolingparameterP能被认为是最大值在使三角洲T_c.For弱潜在的成核粒子凉下来下面宪政，RGS的使用将是更精确的。纯铝和AISi7合金的谷物精炼的试验性的数据是重合的与模型一起预言了结果。

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简介：Extendedx-ray-absorptionfine-structuremeasurements(EXAFS)wereperformedonnanocrystalline(nc)elementalSesampleswithgrainsizesrangingfrom13to60nm.Accompaniedwiththepreviousstudy,weconcludedthat,withtherefinementinnc.Se.theintrachainstructure(thebondlength,thecoordinationnumber)isunchangedwhiletheinterchainspacingisenlarged.ThegrainboundaryinthencSeisfoundtobeinalow-energyconfigurationthatisdifferentfromthedisorderedgaslikegrainboundarystructure.

简介：Objective:Toexploretheroleofthetexturefeaturesofimagesinthediagnosisofsolitarypulmonarynodules(SPNs)indifferentsizes.Materialsandmethods:Atotalof379patientswithpathologicallyconfirmedSPNswereenrolledinthisstudy.TheyweredividedintothreegroupsbasedontheSPNsizes:≤10,11-20,and>20mm.Theirtexturefeaturesweresegmentedandextracted.ThedifferencesintheimagefeaturesbetweenbenignandmalignantSPNswerecompared.TheSPNsinthesethreegroupsweredeterminedandanalyzedwiththetexturefeaturesofimages.Results:These379SPNsweresuccessfullysegmentedusingthe2DOtsuthresholdmethodandtheself-adaptivethresholdsegmentationmethod.ThetexturefeaturesoftheseSPNswereobtainedusingthemethodofgreylevelco-occurrencematrix(GLCM).Ofthese379patients,120hadbenignSPNsand259hadmalignantSPNs.Theentropy,contrast,energy,homogeneity,andcorrelationwere3.5597±0.6470,0.5384±0.2561,0.1921±0.1256,0.8281±0.0604,and0.8748±0.0740inthebenignSPNsand3.8007±0.6235,0.6088±0.2961,0.1673±0.1070,0.7980±0.0555,and0.8550±0.0869inthemalignantSPNs(allP<0.05).Thesensitivity,specificity,andaccuracyofthetexturefeaturesofimageswere83.3%,90.0%,and86.8%,respectively,forSPNssized≤10mm,andwere86.6%,88.2%,and87.1%,respectively,forSPNssized11-20mmand94.7%,91.8%,and93.9%,respectively,forSPNssized>20mm.Conclusions:Theentropyandcontrastofmalignantpulmonarynoduleshavebeendemonstratedtobehigherincomparisontothoseofbenignpulmonarynodules,whiletheenergy,homogeneitycorrelationofmalignantpulmonarynodulesarelowerthanthoseofbenignpulmonarynodules.Thetexturefeaturesofimagescanreflectthetissuefeaturesandhavehighsensitivity,specificity,andaccuracyindifferentiatingSPNs.ThesensitivityandaccuracyincreaseforlargerSPNs.更多还原

简介：这份报纸为不一致的自然沉积混合物的运输以中部的谷物尺寸和有效沉积尺寸评估代表性的沉积尺寸的适用性。来自Krasak河的自然沉积，Yogjakarta被使用。床样品从三不同的河节被收集，即在上游的(U)，中流(M)和下游的(D)。中部的直径，d50和沉积几何标准差，为节U，M和D的g是1.63公里，0.91公里和0.69公里，并且4.8，2.3和1.5分别地。特别注意对在阀值沉积运动上改变代表性的沉积尺寸的效果被给予，在四个阀值方程被采用的地方。当时，阀值价值变化g=4.8g=4.8并且与g<2.4g<2.4。分析用有或没有沉积运动的阀值标准说明两个的八个选择公式被扩大到水流带来的碎石运输的预言。到为床材料的不一致的报道，当时，在用d50的计算水流带来的碎石分泌物之间的比较与水流带来的碎石预言被做代表性的沉积直径被使用。当有效沉积尺寸为不一致的沉积混合物被采用时，统计分析的改进仅仅为预言被观察的分析表演计算了使用Brownlie(1981)和Camenen和Larson(2005)表情。采用有效沉积缩放de或d计算水流带来的碎石分泌物的他们未必确实改进水流带来的碎石预言，d50的使用被看作足够。

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简介：以传统的产品出售企业的一个不同方法提供产品和服务的一个新企业概念特别在生产工业正在得到更多的注意。这篇论文调查借助于产品和服务的集成的这家新企业怎么在德国和意大利被完成。另外，它根据公司尺寸分析差别。结果包括那这类企业在他们顾客的焦点激发的许多情况中并且经常由物理产品和他们的维护组成。与德国的对比，意大利的公司经常为这类提议明确地设计他们的物理产品。从分析基于尺寸差别，当拥有物理产品时，小公司被发现为这类提议完成特定的设计。在那里别似乎是开发支持如此的提议的发展的任何确定的方法或工具，在如此的方法/工具以内，将为更多的改编处于良好的竟技状态有空间物理产品设计。

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简介：有bimodal粒子尺寸的钻石/铜composites的热传导性被学习。composites与40和100颗m尺寸钻石的混合物通过液体铜的压力渗入被准备进钻石预先形成。有钻石的不同coarse-to-fine体积比率的预先形成的渗透被调查。有bimodal尺寸分发的钻石/铜composites的热传导性与从Chu开发的一个分析模型导出的理论价值相比。钻石/铜composites能到达更高热的传导性，他们的表面粗糙能被使用bimodal钻石粒子尺寸改进，这被预言。

简介：Nano-sizedzincoxide(nZnO)particlesareonekindofthemostcommonlyusedmetaloxidenanoparticles(NPs).ThisstudycomparedthecytotoxicandembryotoxiceffectsofthreeincreasingsizedZnOparticles(30nm,80?150nmand2μm)inthefloundergill(FG)cellsandzebrafishembryos,andanalyzedthecontributionofsize,agglomerationandreleasedZn2+tothetoxiceffects.AllthetestedZnOparticleswerefoundtobehighlytoxictobothFGcellsandzebrafishembryos.Theyinducedgrowthinhibition,LDHrelease,morphologicalchangesandapoptosisinFGcellsinaconcentration-,size-andtime-dependentmanner.Moreover,thereleaseofLDHfromtheexposedFGcellsintothemediumoccurredbeforetheobservablemorphologicalchangeshappened.TheultrasonicationtreatmentandadditionofserumfavoredthedispersionofZnOparticlesandalleviatedtheagglomeration,thussignificantlyincreasedthecorrespondingcytotoxicity.ThereleasedZn2+ionsfromZnOparticlesintotheextracellularmediumonlypartiallycontributedtothecytotoxicity.AllthethreesizesofZnOparticlestestedinduceddevelopmentalmalformations,decreaseofhatchingratesandlethalityinzebrafishembryos,butsize-andconcentration-dependenttoxiceffectswerenotsoobviousasinFGcellspossiblyduetotheeasyaggregationofZnOparticlesinfreshwater.Inconclusion,bothFGcellsandzebrafishembryosaresensitivebioassaysystemsforsafetyassessmentofZnOparticlesandtheenvironmentalreleaseofZnOparticlesshouldbecloselymonitoredasfarasthesafetyofaquaticorganismsisconcerned.

简介：Adimpleappearsonafreesurfacewhilerotatingacylindertankfilledwithliquid.Thedimplestartstoconcentricallydeepertoadrainportatthebottomcenterofthetank.Overtime,thedimplepenetratesthedrainport,afreesurfaceformsalongandslenderstringshapeinthetank,andaso-calledvortexing(aircore)phenomenonoccurs.Thegenerationofavortexcoredependsonthesizeofthetankanddrainport,andonthepropertiesoftheliquidinthetank.Inthisstudy,theliquidlevelandthetimeatwhichthevortexcoreisinitiallygeneratedarenumericallyinvestigatedusingdifferentvaluesoftankdiameter,drainportdiameter,andinitialtankrotationalspeeds.Insteadofafullthree-dimensionalanalysis,atwo-dimensionalaxisymmetricsimulationisconducted.Themomentumconservationequationinthecircumferentialdirectionisadditionallysolvedinthetwo-dimensionalmeshsystem.Severalnon-dimensionalvariablesarecreated:theratiooftheaircoregenerationdistanceandtankdiameter,thediameterratioofthetankanddrainport,therotationalReynoldsnumber,therotationalFroudenumber,andtherotationalWebernumber.Finally,thenon-dimensionalaircoregenerationdistanceiscorrelatedwiththeothernon-dimensionalparameters.

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