简介：AbstractBackground:Super-responders (SRs) to cardiac resynchronization therapy (CRT) regain near-normal or normal cardiac function. The extent of cardiac synchrony of SRs and whether continuous biventricular (BIV) pacing is needed remain unknown. The aim of this study was to evaluate the cardiac electrical and mechanical synchrony of SRs.Methods:We retrospectively analyzed CRT recipients between 2008 and 2016 in 2 centers to identify SRs, whose left ventricular (LV) ejection fraction was increased to ≥50% at follow-up. Cardiac synchrony was evaluated in intrinsic and BIV-paced rhythms. Electrical synchrony was estimated by QRS duration and LV mechanical synchrony by single-photon emission computed tomography myocardial perfusion imaging.Results:Seventeen SRs were included with LV ejection fraction increased from 33.0 ± 4.6% to 59.3 ± 6.3%. The intrinsic QRS duration after super-response was 148.8 ± 30.0 ms, significantly shorter than baseline (174.8 ± 11.9 ms, P = 0.004, t = -3.379) but longer than BIV-paced level (135.5 ± 16.7 ms, P = 0.042, t = 2.211). Intrinsic LV mechanical synchrony significantly improved after super-response (phase standard deviation [PSD], 51.1 ± 16.5° vs. 19.8 ± 8.1°, P < 0.001, t= 5.726; phase histogram bandwidth (PHB), 171.7 ± 64.2° vs. 60.5 ± 22.9°, P < 0.001, t= 5.376) but was inferior to BIV-paced synchrony (PSD, 19.8 ± 8.1° vs. 15.2 ± 6.4°, P = 0.005, t = 3.414; PHB, 60.5 ± 22.9° vs. 46.0 ± 16.3°, P = 0.009, t = 3.136).Conclusions:SRs had significant improvements in cardiac electrical and LV mechanical synchrony. Since intrinsic synchrony of SRs was still inferior to BIV-paced rhythm, continued BIV pacing is needed to maintain longstanding and synchronized contraction.

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简介：他的纸在过程的任意的数字t能垮掉的异步的传递消息的系统考虑最终的领导人选举问题(t

简介：ＭｅａｓｕｒｅｍｅｎｔｆｏｒＥｌｅｃｔｒｉｃａｌＬｅｎｇｔｈｏｆＣａｂｌｅｓ￥ＬｉＪｉ；ＺｈｅｎｇＪｉａｎｈｕａ；ＹｅＦｅｎｇａｎｄＣｈｕＺｈｅｎｇｓｈｅｎｇＩｔｉｓｉｍｐｏｒｔａｎｔｔｏｍａｔｃｈｃａｂｌｅｅｌｅｃｔｒｉｃａｌｌｅｎｇｔｈｉｎｔｈｅ...

简介：Recentprogressintheelectricalcontrolofmagnetisminoxides,withprofoundphysicsandenormouspotentialapplications,isreviewedandillustrated.Inthefirstpart,weprovideacomprehensivesummaryoftheelectricalcontrolofmagnetismintheclassicmultiferroicheterostructuresandclarifythevariousmechanismslyingbehindthem.Thesecondpartfocusesonthenoveltechniqueofelectricdoublelayergatingfordrivingasignificantelectronicphasetransitioninmagneticoxidesbyasmallvoltage.Inthethirdpart,electricfieldappliedonordinarydielectricoxideisusedtocontrolthemagneticphenomenonoriginatingfromchargetransferandorbitalreconstructionattheinterfacebetweendissimilarcorrelatedoxides.Attheend,weanalyzethechallengesinelectricalcontrolofmagnetisminoxides,boththemechanismsandpracticalapplications,whichwillinspiremorein-depthresearchandadvancethedevelopmentinthisfield.

简介：ANewTechniqueThatStimulatesKeyNerveCellsintheSpinalCordOffersHopeforPatients,ScientistsSayInapotentialbreakthroughforthetreatmentofspinal-cordinjuries,amanparalyzedbelowthechesthasregained

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简介：ChinaisdeterminedtoentertheWTObeforetheendoftheyeaLandtothisendhasmadegreatconcessions,includingopeningthetelecommunications,banking,insuranceandagricultUresectors.InAPril,PremierZhuRongjivisitedtheUnitedStates,andduringthevisit,theBilateralAgricultu...

简介：IntroductionInrecent10years,duetofastdevelopingofeconomyinChina,seriouspowershortageoccurs.Thesystemfrequencyoftenfelltoabnormalvaluesinmostnetworks.Forthesecurityofpowersystems,forcedswitchoffoffeedersfromthedistributionsubstationoftenhappendtorecovernormalfrequency.Infact,thespeedofdevelopmentofChinesepowerindustryisveryhighinthisperiod.Theyearlyaverageincreasingrateofgeneratingcapacitywasabout8%.Theyearlynewlyinstalledca-pacitywasmorethan9000MWinrecent4years.Buttheannual

简介：让N=(G，c)一个随机的电的网络被在随机的图G\mathbbG\mathbb为每个边分配某个抵抗获得{G}(n，p)并且边界顶点上的潜力。在这份报纸，我们证明与高概率，G的所有顶点的潜在的分发离一个常数很靠近。

简介：Objective:Tosummarizethereconstructionexperienceoftheelectricalinjuriesinemergency.Methods:All309woundsin105patientswhosufferedfromelectricalinjurieswerereviewedduringa10yearperiodfromJan.1st1986toDec.31st,1996.Treatmentmethod,patientdataandresultswerecomparedandanalyzed.Acomprehensiveurgentreconstructionalternativeusedinallcasesincludedthefollowings,1)debridingthewoundinemergency,2)preservingthevitaltissuesasmuchaspossible,evendevitalizedtissuesorlocalnecrosis,3)transplantingthesevitaltissuesduringthefirstsurgeryifthefunctionalreconstructionrequired,4)nourishingthewoundbedbytissueflapscoveringwithrichbloodsupply,5)improvingflapsurvivalbycontinuousirrigationfor24-720hoursbeneaththeflapswithacompoundmedicineaftersurgery.Results:Satisfactoryresultswereobtainedwiththeextremitylossratiooflessthan7%inthisgroupcomparedwith42.5%whichwas10yearsbefore1984inthesamehospital.Conclusions:Thisurgentcomprehensivereconstructionalternativeisaneffectiveandworkablemethodforreducingextremitylossofelectricalinjuries.

简介：Ｆｏｕｎｄｅｄｉｎ１９８６，ｔｈｅＳｕｚｈｏｕＸｉａｎｇｘｕｅｈａｉＥｌｅｃｔｒｉｃａｌＡｐｐｌｉａｎｃｅＣｏｍｐａｎｙｉｓａｎａｔｉｏｎａｌｌａｒｇｅｐｉｌｌａｒｇｒｏｕｐｃｏｍｐａｎｙｐｒｏｄｕｃｉｎｇｈｏｍｅｅｌｅｃｔｒｉｃａｌａｐｐｌｉ...

简介：Thepurposeofthisstudyistoinvestigatedifferentfactorsoftheartifactinsurfaceelectromyography(EMG)signalcausedbyfunctionalelectricalstimulation(FES).Thefactorsinvestigatedincludethesizeofstimulationelectrodepads,theamplitude,frequency,andpulsewidthofthestimulationwaveformandthedetectingelectrodepoints.Wecalculatetherootmeansquare(RMS)ofEMGsignaltoanalyzetheeffectofthesefactorsontheM-waveproperties.TheresultsindicatethattheM-wavemainlydependsonthestimulationamplitudeandthedistributionofdetectingelectrodes,butnotontheotherfactors.Thisstudycanassistthereductionofartifactandtheselectionofdetectingelectrodepoints.

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简介：Duetotheindividualelectricalandmechanicalcharacteristicsofresistanceweldingmachines,choiceoftherightmachineandweldingparametersforanoptimizedproductionisoftendifficult.Thisisespeciallythecaseinprojectionweldingofcomplexjoints.Inthispaper,anewapproachofcharacterizingtheelectricalpropertiesofACresistanceweldingmachinesispresented,involvingtestingandmathematicalmodellingoftheweldcurrent,thefiringangleandtheconductionangleofsiliconcontrolledrectifierswiththeaidofaseriesofproofresistances.Themodelpredictstheweldcurrentandtheconductionangle(orheatsetting)ateachsetcurrent,whentheworkpieceresistanceisgiven.

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简介：Aimingatthedifficultyintheelectricalresistancemeasurement,wedevelopasimplestatisticalmodelforthecarbonnanotubesadequatelydispersedinavailableinsulatedliquidandintroducetheconceptof“themostprobability”.Basedonthismodel,weobtainthefunctionbetweenmacroscopicresistanceRandresistanceofanindividualnanotube,Ro,fromwhichonecancalculatetheresistanceofanindividualnanotubebymeasuringthemacroscopicresistance.Bycomputationalsimulation,weprovethereliabilityofthemodel.Then,weanalysethefeasibilityofthemodelwhenappliedtoexperiment.

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简介：Electricalconductionbehaviorofpristineandiodinedopedpolyetherimides(PEI)hasbeeninvestigatedunderbothtransientandsteadystateconditionsintheoperatingtemperaturerange50-200℃atvariouselectricfieldsof12-60kV/cm.Thetransientcurrentsshowthehyperbolicdecaycharacter,andthedecayexponentp(ameasureofcurrentdecayrate)decreaseswithtemperature(7)anddopingconcentration.Theoriginoftransientcurrentshasbeenattributedtothedipolarnatureofcarbonyl((?)C=O)groupsandtheetherlinkagespresentinthemainchainofPEI.Thelowfieldsteadystateconductionisohmicinnature.Themagnitudesofionicjumpdistance(a)valuesdonotfavoranionictypeofconductionasapossibleconductionmechanisminpristineaswellasiodinedopedPEI.TheSchottkycoefficientsestimationsdonotshowthepossibilityofSchottkytypeorPoole-Frenkeltypeconductionmechanismsinthelowtemperatureregion(<120℃),however,inthehightemperatureregion(>120℃)thereisacertainpossibilityofPoole-Frenkeltypeconductionmechanisminbothpristineandiodinedopedsamples.Thedualslopeinthe1gIversus1/Tcurvesforiodinedopedsamplesindicatesthepresenceofmorethanonetypeoftrappinglevels.

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