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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.

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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