简介：Thispaperaimstodesignpunchingdieofthestatorandrotor.Byanalyzingandcomparing,wedeterminethebetterprocessingprogram.Notonlytoensuretheprecisionanddimensionalrequirements,butalsotoimproveefficiency.Throughdetailedanalysisoftheprocess,thispaperdeterminesthestructureoftwocompositemolds.Thedimensionsofitsconvexandconcavedieedgesizeandotherpartsarecalculatedandchecked.Finallythispapercompletesthedesignoftwomolds.

简介：Theeffectsofexerciseondecision-makingperformancehavebeenstudiedusingawidevarietyofcognitivetasksandexerciseinterventions.Althoughthecurrentliteraturesupportsabeneficialinfluenceofacuteexerciseoncognitiveperformance,themechanismsunderlyingthisphenomenonhavenotyetbeenelucidated.Wereviewstudiesthatusedsingle-pulsetranscranialmagneticstimulation(TMS)toprobetheexcitabilityofmotorstructuresduringwhole-bodyexerciseandpresentaframeworktoaccountforthefacilitatingeffectsofacuteexerciseonmotorprocesses.Recentresultssuggestthat,evenintheabsenceoffatigue,theincreaseincorticospinalexcitabilityclassicallyreportedduringsubmaximalandexhaustingexercisesmaybeaccompaniedbyareductioninintracorticalinhibition.Weproposethatreducedintracorticalinhibitionelicitsanadaptivecentralmechanismthatcounteractstheprogressivereductioninmuscleresponsivenesscausedbyperipheralfatigue.Suchareductionwouldrenderthemotorcortexmoresensitivetoupstreaminfluences,thuscausingincreasedcorticospinalexcitability.Furthermore,reductionofintracorticalinhibitionmayaccountforthemoreefficientdescendingdriveandfortheimprovementofreactiontimeperformanceduringexercise.Theadaptivemodulationinintracorticalinhibitioncouldbeimplementedthroughageneralincreaseinreticularactivationthatwouldfurtheraccountforenhancedsensorysensitivity.

简介：Transcranialmagneticstimulation(TMS)representsausefulnon-invasiveapproachtostudyingcorticalphysiology,inadditiontothedescendingmotorpathways(Hallett,2000),andmayalsobeusedtoinvestigatetheintracorticalfacilitatoryandinhibitorymechanisms.

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简介：Purpose:Thepurposeofthisstudywastodeterminetheeffectsofacuteexerciseonmotorresponseinhibitionusingbothbehavioralandelectrophysiologicalapproaches.Methods:TheP3andN1event-relatedpotential(ERP)componentswererecordedwhileperformingastop-signaltaskin21collegestudentsfollowingamoderatelyintenseacuteexerciseboutfor30minandasedentarycontrolsessionthatinvolvedreading.Results:Acuteexerciseinducedashorterstopsignalresponsetime(SSRT)ascomparedtocontrol;however,thegoresponsetime(GoRT)remainedunchanged.InexaminingtheERPdata,acuteexerciseincreasedbothP3amplitudeandlatencybutdidnotaffecttheN1component.Conclusion:Acuteexercisehasaselectiveandbeneficialeffectoncognitivefunction,specificallyaffectingthemotorresponseinhibitionaspectofexecutivefunction.Furthermore,acuteexercisepredominatelyimpactslaterstagesofinformationprocessingduringmotorresponseinhibition,whichmayleadtoanincreaseinattentionalresourceallocationandconfertheabilitytosuccessfullywithholdaresponsetoachievemotorresponseinhibition.