简介：这艘游艇叫“A”，名字听起来及其简单，但它却是一艘高科技的超级豪华游艇。它的外形酷似潜艇，上面有三个游泳池，还有迪斯科舞厅及酒吧，可以开大型派对呢!

简介：SOMEsayitwastheDoorgodsthatsavedLiFangfuandhisstudioinMianzhu,SichuanProvince,fromcompletedestructioninthe2008Wenchuanearthquake.LastrepresentativeinheritorofthevenerableMianzhuwoodblockprintingcraft,LiFangfu,now83,andhisworkershavehonoredfordecadesthiseverydaydeitythroughthewoodblockprintstheyproduceinLi’sstudio.ChenXingcai,LiFangfu’sfellowstate-levelinheritorofMianzhuwoodblockprints,havingpassedawaylastyear,Liisthelastexponentofthecraftandsolebearerofthistitle.

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

简介：'I'llneverforgetwhathappenedthatafternoon,'PengYansaid,withagravelook.'Awomancamewithherdaughterandtoldmethaiftheteenagegirldidn'twanttoliveanymore,neitherdidshe.'PengYanisaprocuratorattheChangpingDistrictProcuratorateundeBeijingMunicipality.Thegirl,then14yearsold,wasthevictiminacriminacasePengYanhandledin2005.'Shewasafraidofmeetingpeopleandgoingtoschoolasshewaspregnan

简介：ATtheheadofthefirstUNlistof19""OralandlntangibleHeritagesofHumanity""publishedin2001,wasChina'sKunquopera.ThePalaccofEternalYouthhassinccbeenhailedasthebestkunqueverprodueedandtheultimatetestofperformingexcellence.

简介：延期微分系统广泛地在许多不同的域里被使用。决定他们的equilibria的本地稳定性是重要的。为有延期依赖者参数的系统，equilibria的稳定性分析复杂、困难。在这篇论文，我们将与延期依赖者参数调查典型方程的一种类型的最终的稳定性。我们的结果证明有延期依赖者参数的典型方程可以是之一在之间最终稳定、最终不稳定、交替稳定、不稳定。Applyingour结果，最终的稳定性能经常直接被决定并且不必呼吁数学软件。二个例子在这篇论文被给。

简介：Inthiswork,wefocusonassessingthegroupeffectoflocalizedcorrosionontheultimatestrengthofthemarinestructuralplatesandstudytheload-deformationbehaviorsofplatesofvariousslendernessanduniaxialcompression.Meanwhile,weinvestigatedifferentcorrodedpatternsfromasinglecircularpitto25circularpitsdistributedovertheplateandcarryouthundredsofnonlinearfiniteelementsimulationsbycombiningthenumber,depth,distributionofpitswithimperfectionsandslendernessofplate.Thedistributionofmultiplepitscausesscatteringofstressconcentrationontheplate,thentheplasticsectionofplatechangeswithwiderdistributionofdamagesimultaneously.Theultimatestrengthariseswhenun-loadingzonecomprisedoftheyieldingstripsandholesextendsacrosstheplate.Itcanbeconcludedthatthecorrodedconditiondefinedasgroupeffectofpitsmanipulatesthedeformationstateandtheloadingcapacityofplateattheultimatestrengthmodethatcoincideswiththeproportionofeffectiveloadingareaandsectionintheprocessofpost-buckling.Tovalidatetheeffectofpitsgroup,weperformthenumericalexperimentsofthepost-bucklingofsteelplatescontainingpitsinarowwithdifferentorientation.

简介：ThecalculationofultimatebearingcapacityisasignificantissueinthedesignofConcreteFilledSteelTubular(CFST)archbridges.Basedonthespacebeamtheory,thispaperprovidesacalculationmethodfordeterminingtheultimatestrengthofCFSTstructures.Theaccuracyofthismethodandtheapplicabilityofthestress-strainrelationshipswerevalidatedbycomparingdifferentexistingconfinedconcreteuniaxialconstitutiverelationshipsandexperimentalresults.Comparisonoftheseresultsindicatedthatthismethodusingtheconfinedconcreteuniaxialstress-strainrelationshipscanbeusedtocalculatetheultimatestrengthandCFSTbehaviorwithsatisfactoryaccuracy.Thecalculationresultsarestableandseldomaffectedbyconcreteconstitutiverelationships.Themethodisthereforevaluableinthepracticeofengineeringdesign.Finally,theultimatestrengthofanarchbridgewithspanof330mwasinvestigatedbytheproposedmethodandthenonlinearbehaviorwasdiscussed.

简介：<正>Lastyear,1998,wasanextraordinaryyear.Inthefaceoffinancialtur-moilinternationallyandrecord--breakingfloodsdomestically,wehavestoodseveretests.Themacroeconomiccontrolpolicyadoptedbythecen-tralauthoritiestoexpandinvestmentinordertoprovideincentivestodo-mesticdemandyieldedpositiveresultsandtheeconomicgrowthratereached7.8percent.Howevertheinvestmentexpansionwasonlythebe-

简介：Aslip-linefieldsolutionispresentedfortheultimatebearingcapacityofthepipelineonapurely-cohesiveclaysoil,takingintoaccountthecircularconfigurationofthepipe,thepipeembedment,andthepipe-soilinterfacialcohesion.Thederivedbearingcapacityfactorsforasmoothrigidpipelimittothosefortheconventionalrectangularstripfootingwhilethepipeembedmentapproacheszero.Parametricstudiesindicatethat,thepipe-soilinterfacialpropertieshavemuchinfluenceonthebearingcapacityforthepipefoundationonclayedysoils.

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简介：摘要目的评估血管内超声（IVUS）指导药物洗脱支架（DES）置入对慢性肾脏病（CKD）患者长期临床结局的影响。方法研究对象来源于ULTIMATE研究，该研究是一项前瞻性、多中心、随机对照研究，从2014年8月到2017年5月在国内8家中心入选1 448例置入DES的冠心病患者，按1∶1的比例随机分为两组（接受IVUS或冠状动脉造影指导支架置入）。本研究选取ULTIMATE研究中有基线血肌酐值的患者1 443例，分为CKD组和非CKD组。CKD的定义为Cockcroft-Gault（CG）公式得出的估算的肾小球滤过率（eGFR）<60 ml·min-1·1.73 m-2至少3个月。主要终点是术后3年靶血管失败（TVF），包含心原性死亡、靶血管心肌梗死和临床症状驱动的靶血管血运重建。采用Kaplan-Meier法进行生存分析，通过log-rank检验比较各组的终点事件发生情况，并采用Cox风险比例模型计算HR及其95%CI，同时检验交互作用。采用多因素Cox回归分析TVF的独立影响因素。结果本研究共入选1 443例置入DES的冠心病患者，其中CKD组349例（24.2%），非CKD组1 094例。CKD组中采用IVUS指导支架置入者180例，造影指导支架置入者169例；非CKD组中采用IVUS指导支架置入者543例，造影指导支架置入者551例。3年临床随访率为98.3%（1 418/1 443）。术后3年时，CKD组的TVF发生率为12.0%（42/349），高于非CKD组的7.4%（81/1 094）（P=0.01），其差异主要来源于CKD组更高的心原性死亡率［4.6%（16/349）比1.5%（16/1 094），P<0.001］。CKD组中IVUS指导下置入支架者的TVF发生率低于造影指导下置入支架者［8.3%（15/180）比16.0%（27/169），P=0.03］。而非CKD组共81例发生TVF，其中IVUS指导下置入支架者的TVF发生率与造影指导下置入支架者差异无统计学意义［5.9%（32/543）比8.9%（49/551），P=0.06］，不存在交互作用（P=0.47）。多因素Cox回归分析结果显示，IVUS指导（HR=0.56，95%CI 0.39~0.81，P=0.002）、CKD（HR=1.83，95%CI 1.17~2.87，P=0.010）和支架长度（每增加10 mm）（HR=1.11，95%CI 1.04~1.19，P=0.002）是置入DES术后3年发生TVF的独立影响因素。结论对于置入DES的冠心病患者，合并CKD者术后3年的TVF发生风险高于非CKD患者；相比于冠状动脉造影，IVUS指导DES置入可以降低CKD患者的TVF风险。