生物医学工程中英文对照外文翻译文献文档格式.docx
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tchange.
I.INTRODUTION
Alllifeformshavemagnetism.Allkindsofmagneticfieldwouldhavesomeeffectsontheconfigurationandactivitiesoflifeformsthatwhicheverenvironmentalmagnetic,additionalmagneticorinsidemagneticoforganism.Thebiologiceffectsarerelatedtothecharacteristicsand
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附录Ⅳ英文文献及翻译
theintensionofthemagneticfield,aswellasthespeciesandthetissuesofthelifeforms.
Theexperimentationshowedthatmagnetismstimulationinsomerangewouldcontrolthegrowthofrattumour,whatevertheyareinoroutthe.bMoudcyhmoretheycaninducethecancercellsdead.30mTmagneticstimulationwouldincreasethecontentofNOintheliverandthekidney.Magneticalsocanimprovetheactivityofsomeenzymeandpromotetheregenerationofnervetissue.Cellwouldincrease,theboneswouldbeconcrescence,thescarwouldberehabilitate.Thebloodrheologyandbloodcellnumberbothofhumanandratwouldchangeobviously,DIthebloodmucositywouldbelow.
Heartisthemostimportantapparatusoflife.Itpulsatesdayandnight.Heartoncestop
pulsating,thelifefordanger.Numerousscholarpaysattentiontotheroleofmagneticfield.Buttheyjuststudiedtheeffectsofmagneticstimulationoftheheartpacemaker.Theexperimentsaboutdirecteffectsofstimulateheartbymagneticisveryfew.
Thetoadsareourexperimentanimalse.Wstimulatedandnotedbythemagneticstimulationequipmentandthenotedequipmentofpulsatilecurvemadebyourselves.Analyzetheresults.
II.STUFF
A.Experimentequipments①:
magneticstimulationequipment;
(magneticintension8-10T,impulsewidth150ms,maximalstimulationfrequency②5Hsozf)t;
wareofnotedpulsatilecurve(madebyourselves③);
cardiomusculartransduc④er;
Ringer.Sol⑤;
Batrachiainstruments⑥;
clipoffrogheart;
⑦cottonthread;
®
burette.
B.Experimentanimals:
toads.
III.METHOD
A.Destroythebrainandthespinalcordofthetoadbystylet:
Penetrateintotheoccipital
apertureuprightwithstylet,destroyedthebrainupwards,takebackthestyletanddestroythespinaldownwards.Ifthelimboftoadwererelaxed,itshowedthatthebrainandspinalweredestroyedcompletel.y
B.Exposethetoadheart:
Makethetoadlyingonitsbackonthewindingcenter.Themagneticaspectisuprightthroughthetoadheart.Cuttheventralskinoftoad,snipthebreastbone,exposetheratheart.Nipthehearttipbyclipcare.fMulalykethecottonthreadtiedwiththeclipoffroghearthelinkedwiththecardiomusculartransducer.Donotmakethetoadheartleavethorax,oritwoulddisturbtheexperimentresults.
C.Notedtheresult:
Connectthecardiomusculartransducerwiththecomputer.Takenotesthecurveoftoadheartwithoutgivingthestimulateofmagneticfield
D.Afterthreeminutes,notedtheweakpulsatilecurve.
E.Makethemagneticintension1,0eTlectricize10s.Stimulatethetoadheartandrecordthepulsatilecurve.
IV.RESULTS
Theabscissaofcardiacrhythmicpulsatilecurveistime,theordinateisconstrictionpower.
Takenotesforthepulsatilecurveoftoadheartthatexposedjust.Wecanknowtherhythmic
pulsatilecycleofthetoadheartis1.5sfromfig1whichshowthecardiacrhythmicpulsatilecurveofthetoadwhichwasexposedtheheartjustnow.Therearetwowavesineachcycle,oneisatriawave,theotherisventriclewave.Theatriawaveis0.5sandtheventriclewaveis1.0s.Theconstrictionpowerofatriaislessthanthatofventricle.Theamplitudeofconstrictionpowerofventricleisthe2timesoftheatria.
Fig.4.1.Itisrhythmicpulsatilecurveofthetoadwithoutmagneticstimulation.
Theconstrictionpoweroftoadheartwouldbecomeweakerafterthetoadheartwasexposedforawhile.Atthesametime,atriumwaveandventriclewavecannotbealreadydistinguished.Heartcontractingamplitudewerereducedobvi,oduoslnyotgotothehalfoforiginalatriumwave.
Therhythmicpulsatilecycleofthetoadheartisstill1.5s.
Fig.4.2.Itistheweakpulsatilecurveoftoadwithoutmagneticstimulation.
Butwecandistinguishtheatriawaveandtheventriclewaveagainaftergivingthetoadheartamagneticstimulationonfollowingpicture.Andtheamplitudeofventriclewavesismorethanthatofthesinglewave.Therhythmicpulsatilecycleofthetoadheartisstill1.5s.
Thereweresixtoadsas