简介：Intheprocessofperformanceofthesalescontract,thesubjectmatterisnotcausedbythecauseofbothpartiesandtheloss,andthatdamageshouldbebornebywhichpartyinthecontractisinvolvedinthesalescontractriskburden.Itisrelatedtothefundamentalinterestsofbothbuyersandsellers.Therefore,thisissuehasbecomeamatterofgreatconcerntobothbuyersandsellers.Itisalsooneofthemostimportantlegalissuesinthesalescontractandplaysaveryimportantroleinthecontractlaw.Thispaperisaimingattheissuesoftheburdenofriskinbusinesscontractandtheimprovementofthesystemofriskofbusinesscontractlegislationsuggestions,inordertomakecontractriskburdenhasacertainroleinpromoting.

简介：-Basedonthetheoryoflimitanalysis,theFiniteDifferenceMethod(FDM)isestablishedforevaluatingtheultimatebearingcapacityofsubsoilstobeartheunburiedpipelines.Theanalyticalresultsofbearingcapacityoftheidealclayisgiven.Theapproachtobearingcapacityevaluationofcohesionlesssubsoilswithoutsurchargeissuggested.Theresultsfromthismethodareconsistentwiththoseobtainedfrommodeltests.

简介：JointlydevelopedbyGeneralResearchInstituteofNonferrousMetalsinBeijing,NortheastUni-versityofTechnology,ZhuzhouHardAlloyFactoryandZigong-HardAlloyFactory,fournewmarksofRE-bearinghardalloy,YG6R,YG8R,YT5RandYT15R,havereachedcommercialproductionrecently.ThealloysresultfromthetechniquewherebyasmallamountofREmetalsisadded.Asteel

简介：为了与僵硬学习负担转移机制和混合堆积的适用的能力，核心(MPSC)被插入预制增强的具体堆积(PRCP)形成，在原处测试与不同长度，直径，水水泥比率和PRCP包含MPSC，水泥混合了堆积，并且钻洞堆积，被执行。限制适用的能力，负担解决曲线和MPSC的压力分发，混合堆积被获得。在水泥土壤和PRCP之间的负担转移被有限元素方法分析(女性)。测试结果和女性的分析证明MPSC充分从从外部顶装进转移内部水泥的PRCP的混合堆积和高压缩强度玷污的水泥利用了大磨擦，并且那插入进混合堆积的PRCP改变混合堆积的压力分发并且改进在混合堆积和土壤之间的摩擦抵抗。长度和MPSC的节区域onPRCP两个都有最佳价值。采用MPSC在改进软土壤地面的适用的能力是有效的。

简介：一系列调查被进行学习适用的能力和混合的使硬的深水泥(SDCM)的负担转移机制堆积。实验试验包括六个标本被进行调查在具体核心和thecement土壤之间的摩擦抵抗。二模型堆积和24照原尺寸的堆积被测试检验单个堆积的适用的行为。实验室和模型测试结果显示连贯的力量足够大保证在核心堆积和外部水泥土壤之间的相互作用。full-scaletest结果证明SDCM堆积展出类似的适用的行为到无聊并且cast-in-placeconcrete堆积。一般来说，与合理合成结构，SDCM堆积能有效地播送应用负担，并且由于更生硬的核心的增加，SDCM堆积拥有高适用的能力。基于这些试验性的调查和理论分析的调查结果，一个实际设计方法被开发预言SDCMpile的垂直适用能力。

简介：Wireraceballbearingshavebeenwidelyusedinhigh-techweapons.Thepreloadofawireraceballbearingiscrucialinengineeringapplications.Inthisstudy,amoreeffectiveapproachisproposedforexactdeterminationofthewireraceballbearingpreload.Anewmathematicalmodelofthepreloadandthestartingtorqueofthewireraceballbearingwasbuiltusingthetheoremofthe3Drollingfrictionresistanceandthenon-conformingcontacttheory.Employingawireraceballbearingwitha1000mmdiameterusedinaspecifictypeofaircraftsimulatingrotarytable,thenumericalanalysisinMATLAB～showedthatthepreloadmagnitudecanbecontrolledintherangeof130–140μm.Asverification,theexperimentalresultswereinagreementwiththetheoreticalresults,andconfirmthefeasibilityofthismethod.Thisnewapproachismoreexactinthepreloadrangeof10–158μmthanthatcomputedbythenumericalmethodreportedinourpreviouswork(Shanetal.,2007b).Thisimpliesthatthepresentmethodcontributestomoreeffectivelypreventingrollingnoise,overturningmomentsandwearofthewireraceballbearing.Thecurrentresearchprovidescriticaltechnicalsupportfortheengineeringapplicationofwireraceballbearingswithlargediameters.

简介：Theunifiedgas-kineticscheme(UGKS)ispresentedandusedinthislettertostudythesliderairbearingproblem.TheUGKSsolutionsarefirstvalidatedbycomparisonwithdirectsimulationMonteCarloresults.Aftervalidation,theUGKSisusedtostudytheair-bearingproblemunderdifferentnonequilibriumconditions.Onthesurfaceoftheslider,thedependencyofthegaspressureandnormalforceontheMachandKnudsennumbersarefullyevaluated.Thenon-equilibriumeffectontheforceloadinginthewholetransitionregimeuptothefreemolecularlimitisalsostudied.

简介：Rollingbearingiswidelyusedinmechanicalsupport,itsgeneralcomponentsaretheinnerring,outerring,theball,retaineretc..Nowmanycompaniesindevelopedcountriesanduniversityintherollingbearingastheresearchobject,andhasmadegreatprogressindesigntheory,theexperimentmethodandproductiontechnologyetc.WewillusethefiniteelementANSYStoestablishthemodelofdeepgrooveballbearing.Throughthecontactanalysis,wecangetthecontactstressbetweentheringsandballs,strain,contactstate,penetration,slidingdistanceandthefrictionstressdistribution.ThesevaluesarecomparedtothetheoreticalvalueswithHertztheory,andtheyhavebetterconsistency,providethegoodtheoreticalbasisfortheoptimizationdesignofrollingbearings.

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简介：这研究在不同PBMP招募下面在忍受钾的矿物质粉末(PBMP)在K上分析蚯蚓的biotransformation。PBMP(10%～60%集体部分)和腐烂的奶牛粪的混合物是被使用为引起蚯蚓在土壤在PBMP上学习蚯蚓的释放钾的能力喂。包含20%和30%PBMP的混合导致了蚯蚓的好生长以及钾的更高的变换率。因此，矿物质粉末的最佳招募是20%和30%。奶牛粪和PBMP的混合与奶牛粪的混合和石英粉末的相应比例相比在不同联合在PBMP上分析蚯蚓的变换率。在蚯蚓与奶牛粪和PBMP的混合被提起以后(8：2和7：3)为30，d，很快可得到的K的内容和有效K是10824.3??????？？

简介：Accordingtoelasticcontacttheory,contactmodelbetweenrollerandraceisestablished.ComparedwiththeHertzresults,theresultsareproved,basedonwhichcontactstressdistributionofdifferentcrowningandinitialcontactlengthisgiven,thentheappropriatevalueisderived.Onthebasis,inertiaforceanddifferentradialforceisgivenintoconsideration.Viaanalysis,itconcludesthatunderbalancedpureradialloadconditionthelargestcontactstressbetweenrollerandraceincreasesalongwithcrowningvalueincreasing.Withthesamecrowningvalue,thelargestcontactstressbetweenrollerandracedecreasesinthefirstandincreasesattheendalongwithinitialcontactlengthincreasing.Contactstressbetweenrollerandouterraceincreasesalongwithrevolutionspeedincreasing.

简介：ApreliminarystudywasmadeontheantibacterialbehaviorofanewlydesignedCu-bearingtype200stainlesssteelbydifferentmethodsincludingVickershardnessmeasurement,electrochemicaltestandantibacterialtest.TheresultsshowedthatCu-richprecipitationscausedbythesaturatedCuinthesteelmatrixwasnotonlyacrucialfactorforitsexcellentantibacterialcapability,butalsoforitsequivalentcorrosionresistanceasgoodasthecommercialtype200stainlesssteel.

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简介：与时间的转子磁性的适用推迟的Jeffcott在这份报纸被调查。第一，系统的典型方程满足奇特的条件，这被发现。第二，中心歧管减小和正常形式被采用学习分叉从简单零并且零完全想象的奇特。这份报纸的结果将帮助在反馈理解时间延期的影响在转子磁性的适用的系统的动力学上循环。

简介：Thedegradationstrengthofsoilsundercyclicloadingisstudiedandamethodfordeter-miningthecyclicdegradationstrengthwithcyclictriaxialtestsisgiveninthepaper.Furthermore,adum-mystaticmethodforestimatingtheundrainedbearingcapacityforoffshoresoftfoundationunderwaveloadsisdeveloped.Itcanconsidertheeffectofthedifferenceofcyclicstressfordifferentpartsofthefoun-dationonboththedegradationstrengthofthefoundationsoilandthebearingcapacitysothattheesti-matedresultcanbetterreflecttherealconditionoffoundationundercyclicloading.Themethodcanbeap-pliedtoplaneandspaceproblem.

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