简介：<正>PresidentXiJinpingputforwardtheterm"SilkRoadEconomicBelt"onSeptember7th,2013inKazakhstanwhenheproposedinhisspeech"toforgeclosereconomicties,deepencooperationandexpanddevelopmentspaceintheEurasianregion,weshouldtakeaninnovativeapproachandjointly

简介：追溯历史，1890年，WilliamStewartHalsted成为约翰-霍普金斯医院的第一任外科主任，并创建了外科住院医师培训体系，改写了外科教育历史。此前，美国并无正式的临床医生培训体系，有志于外科的医科毕业生或自学，或拜师学艺。Halsted提出的“Seeone,Doone,Teachone”模式[1]的目的，是使住院医师在训练中逐步增加业务难度，锻炼能力，积累经验，最终独当一面。Halsted创建该系统时，不仅着眼于外科医生的训练，亦关注于他们日后成为老师的培训。一个正规的培训体系，是确保先进外科技术传承与传播的唯一方法。

简介：Inthispaper,wepresentanewlightweightblockciphernamedeight-sidedfortress(ESF),whichissuitableforresource-constrainedenvironmentssuchassensornetworksandlow-costradiorrequencyidentification(RFID)tags.Meanwhile,wepresentthespecification,designrationaleandevaluationresultsintermsofthehardwareimplementation.Forrealizingbothefficiencyandsecurityinembeddedsystems,similartotheotherlightweightblockciphers,ESFis64bitsblocklengthandkeysizeis80bits.Itisinspiredfrom

简介：Anewpreparationmethodhasbeendevelopedforthermallystableporouspolyimidemicrospheres.Porouspolyimidemicrosphereswerepreparedusingtriblockcopolymersthatconsistedofathermallystablepolyimidederivedfrompyromelliticdianhydride/4,4’-oxydianilineasthecontinuousphaseandathermallylabilepolyetherasthedispersedphase.Spheresofcopolymersweregeneratedinanonaqueousemulsionandthengraduallyheatedtocompletetheimidizationtoformamicrophase-separatedstructure.Subsequently,thermaltreatmentataslightlyreducedpressureremovedthelabileblocksandproducedpores.Undersuitabledecompositionconditions,theporesizeoftheporouspolyimidewasintherangeof200-400nm.

简介：Inthisstudy,apoly(etherblockamide)(Pebax1657)compositemembraneappliedforCO2capturewaspreparedbycoatingPebax1657solutiononpolyacrylonitrile(PAN)ultrafiltrationmembrane.Ethanol/watermixturewasusedasthesolventofPebaxandtheeffectsofethanol/watermassratiosandPebaxconcentrationonthepermeationpropertiesofcompositemembranewerestudied.Toenhancethecompositemembranepermeance,thegutterlayer,madefromreactiveaminosiliconecrosslinkingwithpolydimethylsiloxane(PDMS),wasdesigned.Theinfluenceofcrosslinkingdegreeofthegutterlayeronmembraneperformancewasinvestigated.Asaresult,aPebax/aminoPDMS/PANmultilayermembranewithhexaneresistancewasdeveloped,showingCO2permeanceof350GPUandCO2/N2selectivityover50.Theblendofpolyethyleneglycoldimethylether(PEG-DME)withPebaxascoatingmaterialwasstudiedtofurtherimprovethemembraneperformance.AfterbeingcombinedwithPEG-DMEadditive,CO2permeanceofthefinalPebax-PEG-DME/amino-PDMS/PANcompositemembranereached400GPUabovewithCO2/N2selectivityover65.

简介：源自陆地的siliciclastic的一个序列在Baxiandun外面摇庄稼，Qingdao，在在诺思中国之间的中生代collisional边界附近，块(网络控制块)和华南堵住(SCB)。这些低档变形了siliciclastic岩石被greywacke与页岩统治，manganiferous有细密纹理的沙岩，arkose和集团企业层。关于这些岩石的形成有二基本解释。一个人认为这个序列在网络控制块以内被形成，并且是白垩纪Laiyang组和Qingshan组的部分河的外形和暴烈的碎片外形出现在山东地区性的地质的地图上。另一条意见建议这些岩石表示在斜坡和盆外形的混浊depositional系统主要在奥陶纪被扔。重要地基于地观察，petrological分析，和大多数，在这的geochemical结果学习，在Baxiandun节的沉积阶层主要由siltstone，沙岩和mudstone岩性学组成。他们被深海的碎片和混浊存款在一个湖的斜坡和底统治。在Baxiandun节岩石标明日期的U-Pb由岩屑形成的锆石显示来源岩石是很复杂的，他们的年龄被改变从对早白垩纪太古代。源自陆地的岩屑的最年轻的年龄能代表沉积阶层的年龄。因此，我们推断沉积岩石属于早白垩纪深海的湖的沉积序列并且从SuluUHPorogen和华南块边缘的侵蚀有多重来源origined。

简介：Anovelcarbonmatrix/siliconnanowires(SiNWs)heterogeneousblockwassuccessfullyproducedbydispersingSiNWsintotemplatedcarbonmatrixviaamodifiedevaporationinducedself-assemblymethod.TheheterogeneousblockwasdeterminedbyX-raydiffraction,Ramanspectraandscanningelectronmicroscopy.Asananodematerialforlithiumbatteries,theblockwasinvestigatedbycyclicvoltammograms(CV),charge/dischargetests,galvanostaticcyclingperformanceandA.C.impedancespectroscopy.WeshowthattheSiNWsdisperseintotheframework,andarenicelywrappedbythecarbonmatrix.Theheterogeneousblockexhibitssuperiorelectrochemicalreversibilitywithahighspecificcapacityof529.3mAh/gincomparisonwithbareSiNWsanodewithmerelyabout52.6mAh/gcapacityretention.TheblockpresentsexcellentcyclestabilityandcapacityretentionwhichcanbeattributedtotheimprovementofconductivitybytheexistenceofcarbonmatrixandtheenhancementofabilitytorelievethelargevolumeexpansionofSiNWsduringthelithiuminsertion/extractioncycle.Theresultsindicatethattheas-preparedcarbonmatrix/SiNWsheterogeneousblockcanbeanattractiveandpotentialanodematerialforlithium-ionbatteryapplications.

简介：Theplasticdeformationsoftemperedmartensitesteelrepresentativevolumeelementswithdifferentmartensiteblockstructureshavebeeninvestigatedbyusinganonlocalcrystalplasticitymodelwhichconsidersisotropicandkinematichardeningproducedbyplasticstraingradients.Itwasfoundthatpronouncedstraingradientsoccurinthegrainboundaryregionevenunderhomogeneousloading.Theisotropichardeningofstraingradientsstronglyinfluencestheglobalstress–straindiagramwhilethekinematichardeningofstraingradientsinfluencesthelocaldeformationbehaviour.Itisfoundthattheadditionalstraingradienthardeningisnotonlydependentontheblockwidthbutalsoonthemisorientationsorthedeformationincompatibilitiesinadjacentblocks.

简介：经过八年的设计和缜密的检测程序，这座位于曼哈顿中心的one57高层住宅即将竣工。Christiandeporlzamparc事务所根据当地规范，将建筑设计成不规则的L形，成为纽约最高的住宅。

简介：<正>Potashisoneofthelong-termscaredepositsinChina,andpotashprospectinghaslongbeenlistedasakeybrainstormprojectforournationandgeologicalprospectingunits.TherehavebeenconsiderablestudiesinsearchforpotashdepositsintheKuqadepressionoftheTarimbasin(Jacksonetal.,1991;Gemmeretal.,2004;Vendeville,2005;VendevilleandJackson,1992a,1992b),

简介：Weproposeaphotonicstructurestackedsequentiallybyone-dimensionalphotoniccrystalsandcavities.Thewholestructureiscomposedofsingle-negativeanddouble-negativematerials.TheopticalWannier–Starkladder(WSL)canbeobtainedinalowfrequencyregionbymodulatingthewidthsofthecavitiesinorder.Wesimulatethedynamicalbehavioroftheelectromagneticwavepassingthroughtheproposedphotonicstructure.Duetothedispersivecharacteristicsofthemetamaterials,averynarrowWSLcanbeobtained.Thelong-periodelectromagneticBlochoscillationisdemonstratedtheoreticallytohaveaperiodonamicrosecondtimescale.

简介：Tworecentstudieshavediscoveredasurprisinglinkbetweenthreeseeminglydifferentclinicaldiseases:onethatdestroysbonemarrow,anotherthatpreventssundamagefrombeingrepaired,andathirdwhichcauseschildrentoshowsignsofagingextremelyearly.Ithasbeenfoundthatallthreediseasesarecausedbymutationsinthesamegene.Mutationscomeinanumberofdifferentflavors,

简介：Inthisstudy,aerodynamicbehaviorsofsweptandleanedbladeswereinvestigated.Axialandtangentialbladecurvaturesimpactsoncompressor'soperatingparameterswereanalyzedseparately.AcommercialCFDprogramwhichsolvestheReynolds-averagedNavier-Stokesequationswasusedtofindoutthementionedimpactandthecomplicatedflowfieldoftransoniccompressor-rotors.TheCFDmethodthatwasusedforsolvingflowfield'sequationwasvalidatedbyexperimentaldataofNASARotor67.Theresultsshowedthatthecompressorwithcurvedrotorshadhigherefficiency,rotorpressureratioandstableoperatingrangecomparedtothecompressorwithun-curvedrotors.Usingcurvedrotorsmostlyhadhigherimpactontheoverallstableoperatingrangecomparedtotheotheroperatingparameters.Operatingrangeinvolveschokingpointandstallpointthatwerechangedseparatelybyusingofbendedblade.Forfindingthedetailedimpactofsweepandleanangleontransonicblades,variousformsofleanandsweepangleswereexertedtobasicrotor.Itwasfoundthatsweepanglesincreasedoveralloperatingrangeupto30%,efficiencyupto2%andpressureratioupto1%.Leaningthebladesincreasedthesafeoperatingrange,thepressureratioandefficiencyby14%,4%and2%respectively.

简介：Byusingthecoupledclustermethodandthenumericaldensitymatrixrenormalizationgroupmethod,weinvestigatethepropertiesofthequantumplateaustateinanalternatingHeisenbergspinchain.Intheabsenceofamagneticfield,theresultsobtainedfromthecoupledclustermethodanddensitymatrixrenormalizationgroupmethodbothshowthatthegroundstateofthealternatingchainisagappeddimerizedstatewhentheparameterαexceedsacriticalpointαc.Thevalueofthecriticalpointscanbedeterminedpreciselybyadetailedinvestigationofthebehaviorofthespingap.Thesystemthereforepossessesanm=0plateaustateinthepresenceofamagneticfieldwhenα>αc.Inadditiontothem=0plateaustate,theresultsofdensitymatrixrenormalizationgroupindicatethatthereisanm=1/4plateaustatethatoccursbetweentwocriticalfieldsinthealternatingchainifα>1.Themechanismforthem=1/4plateaustateandthecriticalbehaviorofthemagnetizationasoneapproachesthisplateaustatearealsodiscussed.

简介：这篇论文集中于与一个帮助DP的绳索系统装备的一个半能沉入水中的平台的研究。基于帮助DP的绳索系统的工作原则和平台运动的模型，一个时间域模拟程序被使用分析影响在一线失败的情况中，在平台运动上，驱动推进器和系在的线的紧张的消费。结果显示出那，在10年的风下面主导，一线失败几乎没在系在的线的紧张上有很少影响。当失败线是上风的时，电源消费将与精确性的一个削弱的位置极大地增加。然而失败线是什么时候下风，电源消费将与精确性的一个部分加强的位置被减少。

简介：在经过了14年的游戏机禁令之后，微软Xbox0ne终于得以在中国市场正式销售，而索尼国行PS4也正在布局之中。并预计年底或明年初与中国玩家见面．但一系列问题也随之而来：锁区7价格7中文游戏7捆绑服务7从用户、市场和内容三个层面来看，XboxOne、PS4入华的破冰之旅并不容易，要想在中国市场茁壮成长更是难上加难．

简介：Thispaperintroducesdecimatedfilterbanksfortheone-dimensionalempiricalmodedecomposition(1D-EMD).Thesefilterbankscanprovideperfectreconstructionandallowforanarbitrarytreestructure.SincetheEMDisadatadrivendecomposition,itisaveryusefulanalysisinstrumentfornon-stationaryandnon-linearsignals.However,thetraditional1D-EMDhasthedisadvantageofexpandingthedata.Largedatasetscanbegeneratedastheamountofdatatobestoredincreaseswitheverydecompositionlevel.The1D-EMDcanbethoughtashavingthestructureofasingledyadicfilter.However,amethodologytoincorporatethedecompositionintoanyarbitrarytreestructurehasnotbeenreportedyetintheliterature.Thispapershowshowtoextendthe1D-EMDintoanyarbitrarytreestructurewhilemaintainingtheperfectreconstructionproperty.Furthermore,thetechniqueallowsfordownsamplingthedecomposedsignals.Thispaper,thus,presentsamethodtominimizethedata-expansiondrawbackofthe1D-EMDbyusingdecimationandmergingtheEMDcoefficients.Theproposedalgorithmisapplicableforanyarbitrarytreestructureincludingafullbinarytreestructure.

简介：Theemergingperfect-absorbermetamaterials(PAMs)provideanalternativematerialapproachforthenextgenerationofelectromagneticdetectionatanyfrequencybandofinterest.Onetypeofdualcross-shapedPAMsisdevelopedtoobtainmultiplex-bandspectrumabsorptionatmid-infraredregion.Threedistinctabsorptionpeaksareattributedtothepolarizationsensitivityexcitationoftheplasmonicresonance.Thechargedensitydistributions,whichareexcitedbyresonantelectromagneticwavespassingthroughthePAMsmedium,provideinsightsintotheobservedabsorptionbehavior.WefindthattheretrievedopticalpropertiesofthePAMsincludingpermittivityandpermeabilityarestillconsistentwiththesumoftheDrudeandLorentztypemodelsatwavelengthsrangingfrom2.0to10.0mm.Suchmultiplex-bandabsorptionpropertiesenabletheproposedPAMsapowerfultoolforthedirectdetectionofmultiplemolecularvibrationalstructures,andformultiplespectrainfrareddetection.

简介：这研究表明一出新奇一步舞在与搏动的DC电压包含苯胺单体和苯乙烯丙烯酸的乳剂(SAE)的酸磷酸盐电解质在镁合金上制作厚bilayer涂层的电气化学的方法。形态学，XRD和bilayer涂层由内部氧化物层和外部polyaniline(PANI)组成的FTIR结果表演/SAE合成的层。bilayered结构从联合苯胺，SAE的electrophoretic免职(EPD)和镁合金底层的血浆电解质氧化(PEO)的electropolymerization(EPM)的一个混合过程完成了结果，这被相信。电气化学的腐蚀测试显示bilayer涂层能在3.5wt.%NaCl答案提供优异腐蚀保护给镁合金底层。

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