简介:Thispaperdealswithanimportantsubjectofrejectingtheabnormaldataintelligentlyinthedynamicdatasystem.Basedontheprincipleofnearestneighboroffuz-zymathematics,anapproachofmathematicallyabstractingthehumanthinkingandphys-icalpracticeknowledgeisdiscussed,anewmethodofautomaticrejectionofabnormalda-taisthenproposed.Theexperimentalresultsshowthatthemethodisavailabletothepractice.
简介:Thegrain-growthbehaviorofAl2O3powdercompactswithsmallcontents(<5wt%)ofvariousdopantswasstudied.Theexistenceoftabularsub-grainswereobservedwithallthefollowingdopants:V2O5,MgO+Y2O3andNa2B4O7+V2O3+Pr.Thetabularsubgrainsaredefinedastheabnormalgrainslongerthan30μmwithanaspectratio>50.Theycanbeobservedwhenthesinteringtemperaturearehigherthan1850℃。
简介:ByemployingtheimprovedT42L9spectralmodelintroducedbyNMC(Beijing)fromECMWFandutilizingtheFGGE-IIIbdatacoveringtheperiodof14—19June1979,theatmosphericresponsestotheabnormalsoilmoistureduringthemedium-rangeperiodhavebeenstudiednumerically.Accordingtotheinitialfieldat12GMT14June,afive-daynumericalexperimentunderdifferentconditionsofthesoilmoisturehasbeencarriedoutrespectively.ThemonthlymeanclimatologicalsoilmoistureforJunehasbeenusedinthecontrolexperimentintheinitialtimeanditchangeswithtimeaccordingtothemoisturebudgetequationatthelandsurface.Comparingwiththeexperimentswithdryorwetsoil.onecanconcludethat:1)Sourceofprecipitationovercontinentsinsummerconsistsoftheland-surfaceevaporationandthemoisturetransferfromoceans.Theirintensitiesarecomparableduringthemedium-rangetimescalewhenthesoilevaporatesitsmoisturesufficiently.Therefore,thesoilmoisturecaninfluencetheglobalprecipitationandthegeneralcirculationsignificantly;2)Byinfluencingthethermodynamicdifferencebetweenlandandsea,thesoilmoisturecanchangetheintensityofmonsoonandprecipitationdistribution;3)Theresponseoftheatmospheretotheabnormalsoilmoisturehasthecharacteristicsofgeographicaldistributionandnonlinearinteractions;4)Humanactivi-tiesontheworldcaninfluencetheenvironmentgreatly.
简介:Inthispaper,byvirtueofthecombinatorialoptimizationandgrouptestingmethodand,withascalewithoutweight,wedetectncoinscontainingatmostoneabnormal.Thencoinsareindistinguishableonlybytheirappearances.Wederiveanoptimalprocedureofdeterminingwhetherallthenballsarenormalornotandinthelattercase,ourprocedure(algorithm)alsotellswhethertheabnormalweighsmoreorweighslessthaneachofthenormals.Theoptimalalgorithmobtainedinthispaperisconstructive.
简介:ThesyntheticalelasticcharacteristicparametersofearthtideanditsabnormalprecursorevolutionYAN-BINZHANG(张雁滨)JUNJIANG(蒋骏)XU-DONGL...
简介:BACKGROUND:ResearchesindicatethatpatientswithWilsondisease(WD)haveabnormalskeletalmetabolism,whichisinducedbyvariousfactors.OBJECTIVE:ToprobeintothechangingcharacteristicsofabnormalskeletalmetabolisminWDpatientsandobservetheeffectofdecoppertherapy.DESIGN:Case-contrastandself-controlstudy.SETTING:DepartmentofNeurology,AffiliatedHospitalofNeurologicalInstitute,AnhuiCollegeofTraditionalChineseMedicine.PARTICIPANTS:Atotalof35patientswithWDincluding21malesand14femalesagedfrom10to42yearswiththemeanageof(20±8)yearswereselectedfromDepartmentofNeurology,AffiliatedHospitalofNeurologicalInstitute,AnhuiCollegeofTraditionalChineseMedicinefromSeptember2000toFebruary2001.Allthepatientswereincompliancewiththediagnosticcriteria:historyoffamilyheredity;conesymptomsinvitro,physicalsignorliversymptoms;positiveKayser-Fleischerring;serumcopperprotein<200mg/LorAcopperoxidase<0.2;urinecopper>1.6μmol/24hours;livercopper>250μg/g(dryweight).Thecontrolgroupwasselectedfrom25casesofhealthindividualsincluding13malesand12femalesagedfrom16to35yearswiththemeanageof(22±6)years.Allpatientswhoparticipatedinthestudywereinformedfirstandconsented.METHODS:Patientsintreatmentgroupweretreatedwithvenousinjectionof1.0gsodiumdimercaptosulfonate,onceadayfortotally6successivedays.Andthen,patientsrestedfor2days.Thisprocedurementionedabovewasregardedasacourse,andthetreatmentlastedfor4-8courses.Beforeandafterinjectionofsodiumdimercaptosulfonate,serumcalcitonin(CT),osteocalcin(BGP),parathyroidhormone(PTH)and1,25-(OH)2VitD3weremeasuredwithradio-immunitymethod:blood,urinecalcium,phosphorumandurinecreatinineweremeasuredwithbiochemicalanalyzer;urinedihydropyrimidinedehydrogenase(DPD)wasdetectedwithenzyme-immunitymethod;bonemineraldensity(BMD)wascheckedattheonethirdfromdistalendofulnaandradiuswithsingle
简介:Weusedmatchedfilter,spectrumanalysis,andcontinuationmethodsofpotentialfieldfordataprocessingandobtainedthegeomagneticfielddistributionaboutthecontinentandcontinentalmargininsoutheastChina.Onthebasisofgriddata,inversionwasconductedandmagneticfielddistributionandmagneticstructureonbeddingofdifferentdepthswereobtained.Thenewresultsshowthat:1.ThemagneticfieldcharacteristicsarelargelydifferentinhorizontalandverticaldirectionsandtheycanbedividedintozonesaccordingtothecontinentalblocksofYangtze,Cathaysia,Kangdian(Sichuan-Yunnan)andQinling-Dabie.2.TheTanlufaultextendssouthwardalongtheGanjiangfaultandtheWuchuan-SihuifaultafteritcrossedovertheYangtzeRiverandwasoffsetlocallyintheeast-westdirection.TheTanlufaultfinallyslipsintotheSouthChinaSeaatHainanIsland.3.TheboundarybetweenYangtzeandCathaysiablocksstartsfromHangzhouBayintheeast,extendsalongJiangshaofaultandpassesthroughNanchang,Changsha,andGuilin,andfinallyenterstheseaatQinzhou,Guangxi.4.Thedistributionofburiedstructurezoneislocatedat24.5°-26°N.
简介:Objective:Tostudythemechanismofelectroacupuncture(EA)ofscalp-pointsforregulatingabnormaldischargesofneuronsindifferentregionsaroundthecerebralhemorrhagefocusbyusingneuro-electrophysiologicalmethods.Methods:80Wistarrats(anesthetizedwith20%urethane1g/kg,I.p.)wererandomlydividedintonormal,saline,modelandEAgroups,with20casesineachgroup.Cerebralhemorrhagemodelwasestablishedbyintracerebralinjectionoftherat'sownarterialbloodsample(40uL).Inratsofsalinegroup,thesamevolumeofsalinewasgivenforintracerebralinjection.ExtracellularelectricalactivityofneuronsofthecaudatenucleusandparafascicularnucleusandTailfiliformneedlesandstimulatedelectricallywithstimulatingparametersofstrengthof1V,frequencyof15Hzanddurationof15min.Results:Comparedwithnormalgroup,TFLvaluesofmodelgroupandEAgroupincreasedsignificantly(P<0.01);andcomparedwithmodelgroup,thoseofEAgroupdecreasedsignificantly(P<0.01),suggestingthatthepainthresholdincreasedsignificantlyincerebralhemorrhageratswhileafteracupuncturestimulation,itloweredstrikingly.Comparedwithnormalandsalinegroups,thelatencyvaluesofthepainexcitementandinhibitoryresponsesofthecellulardischargesofthecaudateandparafascicularnucleiinmodelandEAgroupsincreasedsignificantly(P<0.05~0.01),whileafterEA,itrecoveredapparently(P<0.01),showinganapparentregulativeeffectofEAontheabnormalchangesofdischargesofneuronsaroundthecerebralhemorrhagefocus.Conclusion:Scalp-acupuncturepossessesanapparentregulatoryeffectontheabnormalelectricalactivityofneuronsaroundthecerebralhemorrhagefocuswhichmayfavortheearlyrecoveryoffunctionalactivityofneuronsnearthefocustissues.
简介:1.IntroductionWiththeincreasingofturbo-generator(TG)capacity,thelimi-tationontheabnormalfrequencyoperationisgrowingmorerestric-tive.InordertoensurethesafetyoperationofcertainTGunit,splitingdevicewhichisolatesthegeneratingunitfromthesystemisem-ployedwhenthesystemfrequencyisdeclinedtoacertainextent.However,duringthedegradationoffrequency,toisolatethelarge-sizedTGunitfromthepowersystemwillcausethesystemfre-quencytofurtherdecline.Hence,howtousethelowfrequencysplit-tingprotectionproperlyandhowtocoordinatetheoperationofunderfrequencyloadshedding(UFLS)withunderfrequencygeneratorsplitting(UFGS)aresignificantforsecuringthesafetyoperationof