简介:TheDebyeequationwithslit-smearedsmallanglex-rayscattering(SAXS)dataisextendedformanidealtwo-phasesystemtoapseudotwo-phasesystemwiththepresenceoftheinterfacelayer,andasimpleaccuratesolutionisproposedtodeterminetheaveragethicknessoftheinterfacelayerinporousmaterials.ThismethodistestedbyexperimentalSAXSdata,whichweremeasuredat25℃,oforgano-modifiedmesoporoussilicapreparedbycondensationoftetraethoxysiland(TEOS)andmethyltriethoxysilane(MTES)usingnon-ionicneutralsurfactantastemplateunderneutralcondition.
简介:Inthispaper,wepresentthesimplificationofSachsformulasforthemeasurementandcalculationoftheresidualstressesoftheeylinderonlywiththeplanestresses.Furthermore,wepresentthemethodforthemeaurementandcalculationoftheresidualstressesofthecylindernotonlywiththefinitelengthbutwiththelongitudinalstress.Thesecanbeappliedtotheinvestigationontheresidualstressesoftheautofrettedguntube.
简介:Weestablishtheconceptofshapesoffunctionsbyusingpartialdifferentialinequalites.Ourdefinitionaboutshapesincludessomeusualshapessuchasconvex,subharmonic,etc.,andgivesmanynewshapesoffunctions.Themainresultsshowthattheshapepreservingapproxi-mationhascloserelationtotheshapepreservingextension.Oneofourmainresultsshowsthatiff∈C(Ω)hassomeshapedefinedbyourdefinition,thenfcanbeuniformlyapproximatedbypolynomialsPn∈pn(n∈N)whichhavethesameshapeinΩ,andthedegreeoftheap-proximationisCω(f,n-β)withconstantsC,β>0.
简介:Thegeodesicindifferentialgeometryiseornmonlyusedincomputer-aidedfilamentwinding(CAFW)toavoidslippageinmanufacturingprocess.Theuniquenessofthegeodesicbyitsinitialvaluesseverelyrestrictsthechoiceofthefiberpathandisanobstacletotheproductionofoptimizedstructures.Thispaperpresentsanewclassofmoreflexiblenon-sliptrajectoriesonrevolutionalsurfacesasanextensionofthewell-knownClariautequationandgivesitsapplicationinCAFW.
简介:Themultifractalformalismforsinglemeasureisreviewed.Next,amixedgeneralizedmultifractalformalismisintroducedwhichextendsthemultifractalformalismofasinglemeasurebasedongeneralizationsoftheHausdorffandpackingmeasurestoavectorofsimultaneouslymanymeasures.Borel-CantelliandLargedeviationsTheoremsareextendedtohigherordersandthusappliedforthevalidityofthenewvariantofthemultifractalformalismforsomespecialcasesofmulti-doublingtypemeasures.
简介:Extenicsisanewlydevelopedinterdisciplinarysubjectcombiningmathematics,philosophyandengineering.Itprovidesusefulformalizedqualitativetoolsandquantitativetoolsforsolvingcontradictoryproblems.Inthispaper,extensiontheoryisintroducedbrieflyandtheprimaryapplicationsofthistheoryandmethodsinbionicengineeringresearcharediscussed.Theextensionmodelofbiologicalcouplingfunctionalsystemisestablished.Inordertoidentifytheprimaryandsecondarysequencingofcouplingelements,theExtensionAnalyticHierarchyProcess(EAHP)wasadoptedtoanalyzethecontributionofeachcouplingelementtothecouplingfunctionalsystem.Thus,theinfluenceweightfactorofeachcouplingelementcanbedetermined,soastoprovideanewapproachforsolvingprimaryandsecondarysequencingproblemofcouplingelementsinaquantitativeway,andfacilitatethesubsequentbioniccouplingstudy.
简介:Traditionalmagneto-electricvibrationsensorsandservoaccelerometershavesevereshortcomingswhenusedtomeasurevibrationwherelowfrequencycomponentspredominate.Alowfrequencycharacteristicextensionforvelocityvibrationsensorsispresentedinthispaper.Thepassivecircuittechnology,activecompensationtechnologyandtheclosedcyclepolecompensationtechnologyareusedtoextendthemeasurablerangeandtoimprovelowfrequencycharacteristicsofsensors.ThsesthreetypesoflowfrequencyvelocityvibrationsensorshavebeendevelopedandwidelyadoptedinChina.
简介:这研究寻求了在病理学的ENE阴茎癌估计extranodal扩展(ENE)和几个另外的风险因素的度的预示的意义。我们分析了有希望地与证明ENE在31个化疗天真的病人的一个连续系列上收集了数据经历了治疗学的地区性的lymphadenectomy。手术后的外部放射疗法然后被执行。我们学习了一个新奇分级系统和相关病人与他们的结果措施分级的利用的ENE的程度。ENE作为1被分级-如果淋巴节点(行)的囊被破裂不到三分之一个它的圆周或2-如果囊被破坏,超过三分之一个它的圆周或全部行被破坏。我们用Kaplan-Meier方法估计了全面幸存(OS)。Multivariate分析根据比例的危险用在univariate分析作为统计上重要被识别的因素建模的考克斯的意见被执行。ENE的发生率在有阴茎的病理学的节点积极的癌的病人是51.8%。中部的OS和5年的幸存是18个月(95%信心间隔(CI),14.4-21.6)并且23%分别地。univariate分析上的预示的变量是ENE等级2,≥;有ENE的3行,最大的行≥;35公里,≥;5积极的行和骨盆的行参与。在multivariate分析上,仅仅ENE等级2仍然保持与减少的OS联系了(危险比率(HR):6.50)。在结论,有ENE的病人有等级2是的差的结果,和ENE在有病理学的ENE的病人的差的OS的一个独立预兆的因素阴茎癌。