简介：Theq-Wienerindexofunicyclicgraphsaredeterminedinthiswork.Asanexampleofitsapplications,anexplicitexpressionofq-Wienerindexofcaterpillarcyclesispresented.

简介：Bydrawingonstudiesofdomesticandinternationalforestlandscapeassessmentandvisualevaluationofurbansoundscape,wesummarizedthemainfactorsaffectingtheforestsoundscape.Onthisbasis,weestablishedanevaluationsystemforlevel2class3forestsoundscape.Elevenindicatorsoftheforestsoundlandscapeaestheticevaluationsystemandtheweightoftheproductwerescored,andthentheaccumulatedscoredvaluesweredefinedasthesoundlandscapeaestheticindex.Theacousticlandscapeindexwasusedtomeasurethesizeoftheforestlandscapebeautifuldegree.

简介：~~

简介：~~

简介：

简介：0.General;1.PhysicalAcoustics;2.UnderwaterSound;3.MechanicalVibrationandShock;4.NoiseandFourgroupsofguineapigswereexposedtobudsound(3h,1kHz.125dBSPL).Onegroupinhaledairascontrol(C-group),andtheothergroupsingaled2ATAhyperbaricoxygen(HBO)for30minuteseachtime.Thesethreegroupswerecalled,respectively,preventiongroup(P-group)inhalingHBOoncebeforeexposure,treatmentgroup(T-group)inhalingHBOdailyfor14daysafterexposure,andprevention-treatmentgroup(PT-group)inhalingHBOoncebeforeexposureandonceadayfor14daysaf-terexposure.Afterexposure.thethresholdofthecorticalauditorypotentialevokedbyclickroseinallani-mals.HearinglossofC-groupwastheseverest,upto70dB,whilethoseofP-groupandPT-groupwhere53dBand51dB,respectively(p<0.01,comparedwiththatofC-group).HearinglossofT-groupwas68.5dB.Smilarphenomenawerefoundinthemeasurementbytone-burst.Theaboveaspectslasted21daysuntiltheseanimalswerekilled.Theaveragetraumalengthof

简介：SpecimensofPbTesinglefilmaredepositedonGesubstratesbyvacuumthermalevaporation.Duringthetemperaturerangeof80–300K,thetransmittanceofaPbTefilmwithin2–15μmismeasuredevery20KbythePerkinElmerFouriertransforminfraredspectroscopycryogenictestingsystem.Then,therelationshipbetweentherefractiveindexandwavelengthwithin7–12μmatdifferenttemperaturesisreceivedbythefullspectruminversionmethodfitting.ItcanbeseenthattherelationshipconformstotheCauchyformula,whichcanbefitted.Then,therelationshipbetweentherefractiveindexofthePbTefilmandthetemperature/wavelengthcanbeexpressedasn(λ,T)=5.82840-0.00304T+4.61458×10~(-6)T~2+8.00280∕λ~2+0.21544∕λ~4,whichisobtainedbythefittingmethodbasedontheCauchyformula.Finally,thedesignedvalueobtainedbytheformulaandthemeasuredspectrumarecomparedtoverifytheaccuracyoftheformula.

简介：

简介：

简介：Objective:Toevaluatetheassociationbetweenobesityandtheriskofcolorectalcancer.Methods:331patientswithrectalcancerand175withcoloncancerwhoacceptedsurgicaloperationatBeijingCancerHospitalduring1995and2002wereenrolled.Datawerecollectedbyreviewingthepathologymaterialsandhospitalrecords.258healthypeoplewhoacceptedhealthexaminationatBeijingCancerHospitalduring2000and2002werealsoenrolledascontrol.Dataofheight,weightandgenderatthetimeofexaminationwerealsocollected.Obesitywasestimatedbybodymassindex(BMI),computedasweightinkilogramsdividedbyheightinmeterssquared(kg/m2).ThedegreeofobesitywascomparedbetweenthetwogroupsusingBMI(18.5,24-27.9and(28(kg/m2)asthecut-offpointsforunderweight,overweightandobesity.Associationswithobesitywereestimatedbyoddsratios(ORs)and95%confidenceintervals(CIs).AllORswereadjustedforageandsex.Results:Obesitywassignificantlyprevalentinfemalepatientswithrectalcancer.AllthepatientswithcoloncancershowedlowerlevelofBMIthancontrolsubjects.TheORsforrectalcancerrosewithincreasingBMIinwomen.Meanwhile,theORsforcoloncancerdroppedwithincreasingBMIinbothmenandwomen.Obesitywasanindependentriskfactorforrectalcancer,butnotanindependentriskfactorforcoloncancer.Conclusion:Rectalcancerandcoloncancermayhavedifferentbiologicalbehavior.Obesewomenhaverelativelyhighriskforrectalcancer.

简介：~~

简介：

简介：0.General;1.PhysicalAcoustics;2.UnderwaterSound;3.MechanicalVibrationandShock;4.NoiseandNoiseControl;5.Ultrasonics;6.SpeechAsousticsandSpeechCommunication;7.Physio-logicalAcoustics;8.ArchitecturalAsoustics;9.Electroacoustics;10.AcousticalMeasurementandInstrumentation;11.AmosphericAcoustics;12.Geoacoustics;13.Bioacoustics;14.MusicalAcous-tics;15.SignalProcessing

简介：~~

简介：~~

简介：Inthecontextofglobalwarming,Chinaisfacingwithincreasingclimaterisks.Itisimperativetodevelopquantitativeindicestoreflecttheclimateriskscausedbyextremeweather/climateeventsandadverseclimaticconditionsinassociationwithdifferentindustries.Basedontheobservationsat2288meteorologicalstationsinChinaandthemeteorologicaldisastersdata,asetofindicesaredevelopedtomeasureclimaterisksduetowater-logging,drought,hightemperature,cryogenicfreezing,andtyphoon.Astatisticalmethodisthenusedtoconstructanoverallclimateriskindex(CRI)forChinafromtheseindividualindices.Thereisagoodcorrespondencebetweentheseindicesandhistoricalclimaticconditions.TheCRI,theindexofwater-loggingbyrain,andthehightemperatureindexincreaseatarateof0.28,0.37,and0.65perdecade,respectively,from1961to2016.Thecryogenicfreezingindexiscloselyrelatedtochangesintheconsumerpriceindexforfood.Thehightemperatureindexiscorrelatedwiththeconsumptionofenergyandelectricity.Thecorrelationbetweentheyearlygrowthinclaimsonhouseholdpropertyinsuranceandthesumofthewater-loggingindexandthetyphoonindexinthesameyearisashighas0.70.BoththegrowthrateofclaimsonagriculturalinsuranceandtheannualgrowthrateofhospitalinpatientsarepositivelycorrelatedwiththeCRI.Theyear-on-yeargrowthinthenumberofdomestictouristsissignificantlynegativelycorrelatedwiththeCRIinthesameyear.MoreeffortsareneededtodevelopregionalCRIs.

简介：~~

简介：

简介：Number1GlobalSeaLevelChangeandThermalContributionZUOJuncheng,ZHANGJianli,DULing,LIPeiliang,andLILei

简介：