简介：Electricalemission(EM)signals,whicharegeneratedfromtheconcretespecimensunderthree-pointbendingtests,wereconducted.Itisshownthatelectricalemissionphenomenaarerelatedtocrackingofthespecimens,cohesivefailure,contact-separationetc.Thesimultaneousappearanceofelectricemissionsignalsandvisiblecracksduringtheflexureloadingofbeamswasalsoobserved.

简介：ThispaperstudiesconformalinvarianceandgeneralizedHojmanconservedquantitiesofmechanico-electricalsystems.Thedefinitionandthedeterminingequationofconformalinvarianceformechanico-electricalsystemsareprovided.TheconformalfactorexpressionisdeducedfromconformalinvarianceandLiesymmetryundertheinfinitesimalsingleparametertransformationgroup.ThegeneralizedHojmanconservedquantitiesfromtheconformalinvarianceofthesystemaregiven.Anexampleisgiventoillustratetheapplicationoftheresult.

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简介：在这个工作，n类型非结晶的硅氧化物薄电影被RF-PECVD方法用SiH的煤气的混合物扔4,公司2,H2,和PH3。硅氧化物的免职率，折射索引，乐队差距，水晶的体积部分，和传导性变瘦电影坚定、分析。有1.99的折射索引的电影，2.6eV的乐队差距和10的电导率<啜class=“a-plus-plus”>7S/cm被获得，它对中间的反射镜层合适。

简介：Asanadvancedprocessdetectiontechnology,electricalimpedancetomography(EIT)haswideapplicationprospectsandadvantagesinmedicalimagingdiagnosis.However,aseriesofissuesneedtobeaddressedbeforeapplyingEITforbedsidemonitoring.Medicaldiagnosisandbedsidemonitoringaredynamicmeasuringprocess,wherethepositionsofmeasuringelectrodesandtheshapeofthedetectedfieldarechangingdynamical.Duetotheinabilitytocopewiththechangeableelectrodepositionsandvariousdynamicfields,existingEITsystemsaremainlyusedforindustrialdetectioninconditionofstaticmeasurementandvisualization.Inthispaper,weinvestigatethedynamicmeasurementandvisualizationofhumanbreastinEITfield,describethedesignofthemeasuringsensorsystem,andexpoundthemeasuringprinciple.Themaincomponentofthehardwaresystemisabuiltinservoelectricalresistancetomographysensorwithcapacitiveslidingrod,whichcanadapttothecrowdofdifferentchestcontourandthechangeofchestshapeinthedynamicprocessofbreathing.Thecorrespondingmeasuringprincipleisextractingallreal-timepositionsofmeasuringelectrodes,thenobtainingthedynamicboundary,finallydividingthedetectionfieldrapidly.Experimentalresultsconfirmedthattheproposedsystemcanobtainreal-timelocationofboundarysensoranddynamicallysolvetheproblemofarbitrary-shapeboundarymeasurement.Theimagingresultsvalidatetheavailabilityofdesignedsensorsystemandtheeffectivenessofthecorrespondingmeasuringprinciple.

简介：Overthepastdecades,cellsurfacecharge,althoughexperimentallyobserved,hasnotbeenwellunderstoodparticularlyfromtheviewpointofbiophysics.Ourrecentstudieshaveshownthatallcancercellsexhib让negativesurfacechargesthataredirectlyproportionaltothesecretedlacticacid,auniquecancermetaboliccharacteristic:highrateofglycolysis.Wehavethereforedesignedanddevelopedasetofelectrically-charged,fluorescent,andsuper-paramagneticnanoprobes,capableofsensitivedetectionofcancercellsbasedonthesurfacecharges.Theseprobesareutilizedtobindontocellsviaelectrostaticreactionforcaptureandmagneticseparation.Inthisfashion,weareabletocharacterizecellsurfacechargesthatareregulatedbydifferentmetabolicpatterns,thereforeeffectivelydistinguishingthecancercellsfromthenormalcells.All22cancercellsofdifferentorgansarefoundtobenegativelychargedthereforeboundstronglybythepositively-chargednanoprobes,whereasthenormalcellsshowinsignificantbindingtothenanoprobesofeitherchargesigns(positiveornegative).Thisfindingsuggeststhatalltestedcancercellsarenegatively-chargedandnormalcellsareeithercharge-neutralorslightlypositive.Fordiagnosis,cancercellscanbedetected,electrostaticallybound,andmagneticallyseparatedinbloodbychargedandsuper-paramagneticnanoprobes.Intherapeutics,circulatingcancercells(CTCs)canbefilteredandremovedinacontinuousfashiontoreducetheriskofcancermetastasis.Ifsuccessful,thisnewnanotechnologywillrevolutionizeearlycancerdiagnosisandpotentiallyenablenewtherapeuticsinclinicalsettings.

简介：Toinvestigatetheelectricalremodelingandtheeffectsofamiodaroneandlosartanonelectricalremodelinginrapidatrialpacingonrabbitmodel.Methods40normalrabbitswererandomlydividedinto4groups:thesalinegroup(controlgroup),amiodaronegroup,losartangroup,ami+losgroup.Allrabbitswereraiseddrugsinaweek.Theatrialeffectiverefractoryperiod(AERP)wasmeasured.Then,takearapidatrialpacing(600bpm)andtheAERPwasmeasuredafter0.5,1,2,4,6and8hourspacingand30minutesaftertheterminationofrapidpacing.Results①Incontrolgroup,after8hoursrapidpacing,AERP200andAERP150weresignificantlyshortened16.11%±3.1%(P<0.01)and9.99%±4.2%(P<0.01).AndthedegreeofAERPshorteninginducedbyrapidpacingwasgreateratbasiccyclelengthsof200ms(BCL200)thanthatatBCL150.TheAERPofamiodarone,losartangroupandami+losgroupwerenotshortenedduringrapidpacing.②Inthecontrolgroup,aftertheterminationofrapidpacing,theAERPgraduallyincreased.TheAERPatalloftheBCLSexaminedrecoveredtoalmostthe95.78%and96.76%ofbaselinevalueswithinthefirst10minutesandrecoveredtoalmostthe99.07%and99.39%ofbaselinevalueswithinthefirst30minutes.ConclusionsShort-termatrialrapidpacingcaninducetheatrialelectricalremodeling.Amiodaroneandlosartancanpreventtheelectricalremodeling.

简介：Characteristicperiodisanimportantparameteroftheseismicdesignresponsespectrum.Thereisimportanttheoreticalsignificanceandengineeringapplicationvaluetothestudyofthecharacteristicperiodofseismicdesignresponsespectrumofultrahighvoltage(UHV)electricalequipment.Inthispaper,1448horizontalearthquakerecordswithintheworldscopeincludingtheUnitedStatesandJapanforSiteClassⅢwereanalyzed.Resultsshowthatbothmagnitudeandepicentraldistancehavegreatinfluenceonthecharacteristicperiod.About80%ofcharacteristicperiodsofstrongearthquakerecordsareabout0.9s.Statisticalanalysiswasconductedontheseismichazardassessmentresultsof312projectsofChinainrecentyears,anditisfoundthatabout70%ofcharacteristicperiodsareabout0.9s.Combinedwiththerelatedcodecomparisonandanalysis,itissuggestedthatthecharacteristicperiodoftheseismicdesignresponsespectrumofUHVelectricalequipmentshouldselect0.9sinordertoeffectivelyguaranteetheseismicsafetyofUHVelectricalequipment.

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简介：微观结构，机械性质和Cu-0.5wt%的电的电导率上的老化处理的影响为接头材料应用的合金被调查。机械力量和电的电导率的性质与增加老化温度和时间增加。低角度和高角度谷物边界的那种谷物尺寸和部分不是的揭示的年老的立方体合金的微观结构极大地变化了；然而，传播电子显微镜学(TEM)分析与50nm的一种尺寸展出了那beryllides猛冲(鸡冠和NiBe)在谷物被散布。它是，因此断定这些beryllide猛抛改进了机械力量并且另外它是在电的电导率的改进的宠爱。

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.

简介：ThetechnologyforseparatingtheMTOproductsindependentlydevelopedbytheWisonChemicalEngineeringLtd.willbeappliedintheseparationunitofthephaseI680kt/asecond-generationDMTOdemonstrationunitattheShaanxiPuchengCleanEnergyChemicalLimitedLiabilityCompany,

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简介：Threemajorthreatstooceansecurityandcoastalzonesustainability-globalwarming,thelossofoceanbiodiversity,andpollution-arecombiningtothreatentheecologicalintegrityofourmarineenvironmentandlifesupportsystems.Weputforwardageomatics-basedsystemsengineeringarchitecturetoidentifythelocationandextentofoilspills,therebyimprovingtheecologicalintegrityoftheworld'soceansandhelpingcontingencyplannerstodeterminerequiredassets,personnelandotherresources.Thisreal-time,event-basedandcosteffectiveemergencymanagementdecisionsupportsystemcanaidintheclassification,detection,andmonitoringofoilspillsinthemarineenvironment.ThedevelopedSynthetic-ApertureRadar(SAR)processingandcalibrationtechniquesefficientlymonitorenvironmentalchangesininaccessibleoceanregions,characterizeoilspillscenarios,andhelptoidentifyspillsources.ThesystemisusedtoimproveemergencymanagementintheGulfofMexico,withapplicationtooilspillsarisingfromHurricaneKatrina.

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简介：ThemaximuminternaltangentialstressisacriticalparameterforthedesignofthePDC(polycrystallinediamondcompact)diethathasbeenwidelyappliedtooffshoreoildrilling.Asimpleequationforthecalculationofthestressisproposed,andverifiedbythetestdatafromKingdreamCorp.ofChina,thelargestbitCompanyinChina.AnoptimummethodforthedesignofthePDCdieispresentedanddemonstratedindetail,andsoftwareforthedesignandFEManalysisofthedieisdevelopedonthebasisofthemethod.Thissoftwarehasbeenusedinoilindustryinrecentyears.