简介：UsingpureSwavefittingmethod,westudiedtheshearwavevelocitystructuresundertheOrdosblockanditseasternandsouthernmarginalareas.TheresultsshowthatthevelocitystructurebeneathYulinstationintheinteriorofOrdosblockisrelativelystable,wherenoapparentchangebetweenhighandlowvelocitylayersexistsandtheshearwavevelocityincreasessteadilywiththedepth.Thereisa12kmthicklayeratthedepthof25kmunderthisstation,withanSwavevelocity(Vs=3.90km/s)lowerthanthatatthesamedepthinitseasternandsouthernareas(Vs≥4.00km/s).ThecrustundertheeasternmarginofOrdosblockisthickerthanthatoftheYulinstation,andthevelocitystructuresalternatebetweenthehighandIowvelocitylayers,withmorelowvelocitylayers.Ithasthesamecharacteristicashavinga10km-thicklowvelocitylayer(Vs=3.80km/s)inthelowercrustbutburiedatadepthofabout35km.Moreover,westudiedtheVi/VsratioundereachstationincombinationwiththeresultofPwavevelocityinversion.Theresultsshowthat,theaveragevelocityratiooftheYulinstationattheinteriorofOrdosblockisonly1.68,withaverylowratio(about1.60)intheuppercrustandastableratioofabout1.73inthemidandlowercrust,whichindicatesthemediaunderthisstationishomogenousandstable,beinginastateofrigidity.ButatthestationsintheeasternandsouthernmarginsoftheOrdosblock,severallayersofhighvelocityratio(about1.80)havebeenfound,inwhichtheaveragevelocityratiounderKelanandLishistationsattheeasternmarginissystemicallyhigherthanthatofthegeneralelasticalbodywaves(1.732).Thisreflectsthatthecrustunderthemarginalareasismoreactiverelatively,andothermaterialsmayexistintheselayers.Finally,wediscussedtherelationshipamongearthquakes,velocitystructuresbeneathstationsandfaults.

简介：Weanalyzed360permanentandcampaignGPSdatafrom1999to2017inthesouthernSichuan-Yunanblock,andobtainedcrustalhorizontaldeformationinthisregion.Then,wederivedthestrainrateusingamulti-scalesphericalwaveletmethod.ResultsrevealacomplexpatternoftectonicmovementinthesouthernSichuan-Yunnanblock.ComparedtothestableEurasianplate,themaximumrateofthehorizontaldeformationinthesouthernSichuan-Yunnanblockisapproximately22mm/a.TheXiaojiangfaultshowsasignificantlylowerdeformation—aleft-lateralstrike-slipmovementof9.5mm/a.TheHonghefaultclearlyshowsacomplexsegmentaldeformationfromthenorthtosouth.ThenorthernHonghefaultshows4.3mm/arightstrike-slipwith6.7mm/aextension;thesouthernHonghefaultshows1.9mm/arightstrike-slipwith1.9mm/aextension;thejunctionzoneintheHongheandLijiang–Xiaojinhefaultsshowsanobviousclockwise-rotationdeformation.Thestraincalculationresultsrevealthatthemaximumshear-strainrateinthisregionreaches70nstrain/a,concentratedaroundtheXiaojiangfaultandatthejunctionoftheHongheandLijiang–Xiaojinhefaults.Wenotethatmostoftheearthquakeswithmagnitudesof4andabovethatoccurredinthisregionwerewithinthehighshearstrain-ratezonesandthestrainrategradientboundaryzone,whichindicatesthatthemagnitudeofstrainaccumulationiscloselyrelatedtotheseismicactivities.Comparisonofthefastshear-wavepolarizationdirectionoftheupper-crustwiththeupper-mantleanisotropyandthedirectionofthesurfaceprincipalcompressivestrainrateobtainedfromtheinversionoftheGPSdatarevealsthatthedirectionofthesurfaceprincipalcompressivestrainisbasicallyconsistentwiththefastshear-wavepolarizationdirectionoftheuppercrustanisotropy,butdifferentfromthepolarizationdirectionoftheuppermantle.OurresultssupportthehypothesisthattheprincipalelementsofthedeformationmechanisminthesouthernSichuan-Yunnanblockaredeco

简介：BackgroundLeftbundlebranchblock(LBBB)resultsinanalteredpatternofleftventricular(LV)activationandsubsequentcontraction.CardiacsynchronyandcardiacfunctionaredeterioratedbyLBBB.However,theeffectofLBBBhistoryonprogressiveheartdysfunctionandclinicalefficacyofcardiacresynchronizationtherapy(CRT)insuchpatientsarenotclear.InthisstudyweexploretheclinicalefficacyandpredictorofcardiacresynchronizationtherapyinLBBBheartdysfunction.MethodsTwenty-sevenLBBBpatientswithsevereheartfailureweretreatedwithCRT.Twenty-sixLBBBpatientswithoutCRTservedascontrol.During6monthsfollow-up,ECG,plasmaNT-proBNPandechocardiogramindexesweremeasured.ResultsComparedwithbaseline,NYHAfunctionalclassof23patients(85.2%)wasimprovedinCRTgroup.Comparedwithbaselineandcontrol,QRSduration(QRSd)wassignificantlymorenarrow(P=0.023,P=0.019),NT-proBNPwassignificantlylower(P=0.011,P=0.009),ventricularseptaltoleftventricularposteriorwalldelaytimeandleftventriculardyssynchronyindex(Ts-SD)weresignificantlyworse(P<0.05);leftventricularejectionfraction,leftventricularend-systolicvolume,mitralregurgitationareaweresignificantlyimprovedinCRTgroup(P<0.05).whentheLBBBhistorywas≥2yearsandQRSd≥155ms,thesensitivityandspecificityofCRTsuper-responsewere53.4%and85.6%respectively.ConclusionsCRTcanimprovethesynchronizationandhemodynamicofLBBBpatientswithheartdysfunction,theLBBBhistory≥2yearsandQRSd≥155msareoneoftheCRTsuper-responsepredictors.

简介：Theinsertionof1,1-bis(1′-naphthyl)ethylenemonomerunitintotheactivepolystyrenechainendgreatlydecreasedthereactivityoftheactivechainendtothecarbonylgroup,andallowedthepolymericchainendtoreactonlywiththedoublebondinN-methacryloylcaprolactam,resultinginN-acylcaprolactamfunctionalizedpolystyrenein100%conversion.Newdiblockcopolymerofpolystyrenewithpolycaprolactamwassynthesizedbydirectreactionofthefunctionalizedpolymerwithcaprolactamwithoutaddingadditionalalkalimetalortheircaprolactamsalts.

简介：Leftbundlebranchblock(LBBB),traditionallyviewedasanelectrophysiologicabnormality,isincreasinglyrecognizedforitseffectsonhemodynamicsandpatient’sprognosis[1].Exercisenuclearstudiesfrequentlyshowreversibleperfusiondefectsintheabsenceofobstructivecoronaryarterydisease[2]andsomepatientswithintermittentLBBBdevelopanginacoincidentwiththeonsetofLBBB[3].WereportacaseofintermittentLBBBwithabnormalstresstechnetium99mTcsingle-photonemissioncomputedtomography(SPECT)studyandnormalcoronaryarteryangiography.

简介：ＲＥＥＣｏｍｐｏｓｉｔｉｏｎｓｏｆＳｅｄｉｍｅｎｔａｒｙＳｔｒａｔａｏｆＧｕｉｃｈｉＳｔｒａｔｉｇｒａｐｈｉｃＲｅｇｉｏｎ，ＮｏｒｔｈｅｒｎＭａｒｇｉｎｏｆＹａｎｇｔｚｅＢｌｏｃｋ，ａｎｄＩｔｓＧｅｏｌｏｇｉｃＳｉｇｎｉｆｉｃａｎｃｅＺｈｏｕＴａｉｘ...

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简介：Hutubi()井块DX12的河水库是在构造背景下面的一座lithologic烃水库。在这个区域的主要的含有石油的沙身体是薄的并且有一个差的横向的连接。因为油水关系的复杂性，油水库介绍一个低抵抗力特征，它把大困难带到烃水库鉴定。这篇文章开发能满足很好记载评估的低抵抗力水库的要求的井木头解释的一个有效方法。作者联合油水库地质学特征，记载曲线特征的油井和为低抵抗力分析原因的化学分析数据，然后建立适当水库参数解释模型，它使用不同浸透计算方法根据不同的代。当泥土内容是超过5%时，我们选择W-S双水模型；当页岩内容是超过13%时，我们使用Schlumberger公式；当页岩内容不太当时是13%时，我们使用高射炮公式。低抵抗力水库的好记载评估方法被被渗透，孔，毛孔结构的系数和页岩建立的无法缩减的水浸透公式改进了记载方法的内容，烃水库识别图表，和非抵抗力(重复形成测试(RFT)；模块化的动态测试(MDT)，等等)。为记载综合解释的井的这安排的巧合率在井块DX12是82.6%。它是为低抵抗力井木头解释的一个强大的方向。

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简介：Inthispaper,thecorrespondingrelationoftheevolutionarycharacteristicsofgeodeticdeformationfieldswithseismicactivityformorethan20yearsintheNorth-SouthseismiczoneandEastofQinghai-XizangMesshasbeeninvestigated.Notonlyisgeodeticdeformationinnon-homogeneityforthespace-timedistributionbutalsodeformationfieldsareinmacroscopicsimilarityfortheidenticaltimeinterval.Theinheritedtectonicmovementisatotaltendencyofrecentcrustalmovement,andthemotionmodeisinundulations.Therearestagesofaccumulationandrelease-adjustingofstrainenergyincrustalmovementprocesses,whichmaybethedynamicmechanismofrelativelyquietandactiveseismicity.Theanalysisofthecrustalmovementtendencysince1991isofsomesignificanceforjudgingthestressstateandthelargeseismicsituationinthearea.

简介：ObjectiveTheEmeishanlargeigneousprovince(ELIP)inSWChinaistheonlyonelargeigneousprovinceinChinarecognizedbyinternationalgeologists.PreviousstudiesofELIPoverpasttwodecadesindicatethattheELIPage,duration,scaleandgenerationmechanismarestillcontroversial.Amongthosescientifictopics,some

简介：摘要：随着半导体技术的不断进步，5纳米（5nm）工艺已经成为当前最先进的制造技术之一。这种工艺的采用使得芯片的性能得到了显著提升，同时功耗也得到了有效控制。然而，5nm工艺的引入也给数字后端设计带来了前所未有的挑战。数字后端设计是指在芯片设计流程中，将前端设计好的逻辑电路转换为物理布局的过程，包括布局规划、时钟树综合、布线、功耗分析和物理验证等步骤。

简介：DuringtheEarly-MiddleProterozoicera,threemajorlithostratigraphicunitassociations,namelyHekou-Dahongshan,Dongchuan,andKunyang-HuiliGroups,wereestablishedforthemetamorphosedvolcanicsedimentaryrocksexposedinthesouthwesternYangtzeBlock(SWYB).Theintegrationofpetrology,geochemistryandgeochronologyconstrainstectonicframeworkandevolutionoftheSWYB,inwhichfoursetsofSHRIMPU-PbzirconageswereobtainedfromthevolcanicrocksinterbeddedwithintheMiddleProterozoicsuccessions:1800-1600Ma,1600-1300Ma,1300-1100Ma,and1100-1000Ma.Majorandtraceelementalanalysisindicatethatfourkeytectonicevolutionarystages,eachcoincidingwiththeaboveradiometricageset,oftheSWYBduringtheEarly-MiddleMesoproterozoic.TheSWYBwascharacterizedbyaneast-westerlytrendingriftintheHekou,Dongshan,andDongchuanareas,andseparatebasin-formingeventsduring1800-1600Maarid1600-1300Ma,respectively.IntheSWYB,anintracontinentalriftbasinandariftbasinoccurredintheCaiziyuan-MatangandLaowushanareas,respectivelyin1300-1100Maago.During1100-1000Ma,theSWYBwascharacterizedbytheclosureoftheCaiziyuan-Matangrift-oceanbasin,collisionbetweentheHuiliBlocksandKunyangBlocks,andpresenceofvolcanicaresintheTianbaoshanandFulingpenareas.Accordingly,theSWYBrepresentsanewbasinthatrecordstherelativelycompleteassemblyprocessoftheRodinaduringtheEarly-MiddleMesoproterozoicera.

简介：为了压制边带，multiband引起直角的频率部门multiplexing(MB-OFDM)的干扰基于认知收音机系统，边带信号的一个数学表达式被导出。基于这表情，在播送符号之中的限制，帮助压制干扰，被获得。与限制结合了，块涡轮代码调整计划的一种类型被建议。在调整计划，边带干扰快速被稀释。与另外的技术相比，在这个计划，干扰抑制更容易并且足够地被实现。同时，小点错误率(BER)表演能被改进。理论分析和模拟结果证明MB-OFDM-based认知收音机系统受不了瑞利褪色是高度适用的。

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简介：块共聚物平版印刷术为patterningnanoscale作为领先的技术之一正在出现稠密的特征。在这种技术的几乎所有潜在的应用程序，对圆柱、薄片状的域的取向的控制从块共聚物电影为模式转移被要求。这评论加亮刷子的state-of-art发展修改底层在电影控制块共聚物的集会行为。对自我装配的单层，聚合物刷子和地席的发展的选择重要贡献，和化学上有图案的刷子被讨论。

简介：Thechaindynamicsofapairofdiblockpoly(styrene-b-butadiene)(PS210-b-PB960)andtriblockpoly(styrene-b-butadiene-b-styrene)(PS200-b-PB1815-b-PS200)copolymersinbothdiluteandsemidilutetoluenesolutionshasbeencomparativelystudiedbydynamiclaserlightscattering.Asexpected,themutualdiffusionofindividualchainchangesintoafastcooperativediffusionofthechainsegments('blobs')betweentwoneighboringentanglementpointsforboththecopolymersasthesolutionchangesfromdilutetosemidilute.Furtherincreasesoftheconcentrationleadtoasecondslowrelaxationmode.Forthetriblockchains,thereexistsanadditionalmiddlerelaxationbetweenthefastandtheslowmodes.with0.33＜α＜0.44,muchsmallerthan0.75predictedor0.72observedforlinearhomopolymerchainsingoodsolvent.ItimpliesthatthesolventqualityoftolueneforPBmightnotbeasgoodasthatforPS.Duetosuchadifferenceinsolubility,itisreasonabletospeculatethatthePBandPSblocksaretransientlysegregatedinsemidilutesolution.TherelaxationofthesetransientPBandPSricherdomainsleadstotheobservedslowrelaxation.Suchaspeculationissupportedbytheappearanceofanadditionalslowrelaxationmodeinthestudyofpolyisoprene-b-polystyrene-b-polyisopreneinsemidilutesolutionincyclohexane,anon-selectivesolvent,inwhichwealternatedthesolubilitydifferencebyavariationofthesolutiontemperature.

简介：Lamellarcrystalsofdiblock,triblockandfour-armpoly(ethyleneglycol)-b-poly(ε-caprolactone)(PEG-b-PCL)crystalline-crystallinecopolymersweresuccessfullyobtainedfromtheirsolution.Morphologyandstructureoflamellarcrystalsofcrystalline-crystallinecopolymerswereinvestigatedusingtapping-modeatomicforcemicroscopy(AFM)andselectedareaelectrondiffraction(SAED).Allofthesesamplesshowedthetruncated-lozengemultilayerbasalshapeswithcentralscrewdislocationorcentralstack,whichwereallobtainedsimultaneouslyfromtheoilbath.ThediffractionpatternofPEGblocklamellarcrystalisattributedtothe(120)diffractingplanesandthepatternofPCLblocklamellarcrystalisattributedtothe(110)diffractingplanesand(200)diffractingplanesaccordingtotheSAEDresults.Four(110)crystalgrowthplanesandtwo(200)crystalgrowthplanesarediscoveredforthePCLblocks,butthe(120)crystalgrowthplanesofPEGblocksarehidedinthefigureofAFM.Thecrystallinestructureofthefour-armcopolymers(FA)ismoredisorderandconfusedthanthatofthediblock(DI)copolymerandthestriatedfoldsurfacestructuresoflamellarcrystalsoffour-armcopolymers(FA)aresmootherthantheseoflinearanalogues,owingtotheconfusedcrystallizationofblockscausedbythemutualrestrictionofblocksandthehindranceofthedendriticcores.Inaddition,theaspectratioofFAisgreaterthanthatoftheothers.Itishypothesizedthattherearetworeasonsforthechangeofaspectratios.First,the(200)diffractingplanesofPCLcrystalsgrewslowlycomparedtotheir(110)diffractingplanesbecauseofdifferenceintheenergybarrier.Secondly,edgedislocationsonthe(200)diffractingplanesarealsoresponsibleforthevariationoftheaspectratio.Consequently,thecrystallinedefectsareaugmentedbythecompetingblockscrystallizedsimultaneouslyandthehindranceofthedendriticcores.

简介：BymeansoftheintensitytheoryofX-rayscatteringandthetwo-phaseconceptofhighpolymer,thebasicformulaofthecrystaUinityinblockcopolymershasbeenproposedafterthecorrectionsofatomic,temperature,absorption,Lorentzandpolarizationfactor.Applicationofthismethodtodifferenttypepoly(oxyethylene-styrene)blockcopolymersandthesametypeblockcopolymerswithdifferentEOcontentsindicatesthatthecrystallinityinpoly(oxyethylene-styrene)blockcopolymersincreaseswiththeincreaseoftheEOcontentanddecreasesintheorder:PEO-PS-PEO>PEO-PS>PS-PEO-PS.