简介：Inthispaper,afastalgorithmforthediscretesinetransform(DST)ofaToeplitzmatrixoforderNisderived.OnlyO(NlogN)+O(M)timeisneededforthecomputationofMelements.TheauxiliarystoragerequirementisO(N).Anapplicationofthenewfastalgorithmisalsodiscussed.

简介：HL-2Aisadivertortokamakwithnoncircularplasmacross-section,itcanoperateinsingle-nullordouble-nullplasmadischarges.Thetoroidalandpoloidalcoils,vacuumvesselandsupportingstructureofHL-2AcomefromtheformerASDEX,Germany.

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简介：AmmoniumcanchangethetypeofnaturalclinoptilolitefromJinyunofZhejiangProvinceofChina.Thecharacterofexchangeandselectivityofammoniumtypeclinoptilolitetothealkaliandalkaline-earthmetalwereinvestigated,theheatresistanceandnitricacid-resistanceofnaturalclinoptilolitewerediscussed.AlltypesofclinoptilolitewereresearchedbymeansofX-ray,IRspectroscopy,DTAanalyses.Theionexchangewasexperimentedbycolumnoperation,indicatingthatthevalidamountofexchangecapacityofNH4^+typeclinoptilotiesismorethan25mg/g.

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简介：BycombiningChapman-EnskogexpansionwiththeBGKapproximationtoBaltzmannequationandNavier-Stokesequationwasobtained.AndanexpressionofDarcy'slawwasobtainedthroughtakingvariableaverageoverNavier-Stokesequationonsomerepresentativespaceinporousmedia,andfinallyanexamplewastakentoproveitsreliability.

简介：Theformationoffreeradicals（?）OHand（?）Hinanaturallyair-saturatedaqueoussolutionexposedtotherapeuticCWultrasoundatafrequencyof820kHzhasbeenconfirmedbyusingspintrapping5,5-dimethyl-1-pyrroline-1-oxide（DMPO）andelectronspinresonance（ESR）technique.Itissuggestedthattheseradicalsareformedduetothehightemperatureandpressureproducedbytheultrasonictransientcavitation.Thetransientcavitationthresholdisfoundat0.537-0.632W/cm2underasonicationtimeof3minutes.Withincreasingsoundintensitytheyieldoffreeradicals（?）OHraisesrapidlyattheintensityrangingfrom1—2W/cm2,andnolongerincreaseisobservedatabove3W/cm2.Thesoundintensity（I）dependenceoftheyieldof（?）OH（D）canbeapproximatelydescribedbyaregressionequation:D=8.1(I1/2-（Ic）1/2)1/2,whereIc=0.667W/cm2.UnderafixingsoundintensitytheyieldofOHincreasesmonotonouslywiththesonicationtime.

简介：TryptophanresiduesofIgGRFfromrheumatoidarthritispatientweremodifiedwithN-Bromosuccinimide(NBS)andtheproductofmodificationwascharacterizedbyUV-spectrum,FluorescenceemissionspectrumandCD-spectrum.ThecorrespondingadsorptioncapacityofimmobilizedssDNAimmunoadsorbentforIgGRFwasenhancedfrom46%to86%,ThisresultindicatesthetryptophanresidueisessentialfortheinteractionbetweenssDN,AandIgGRF.andionic-bondingplaysanimportantroleinadsorption.

简介：Anewmacrocycliccompoundhasbeensynthesizedbycondensationofpyridine-1-oxide-2,6-dialdehydewithdiethylenetria-mine.Theself-assemlybehaviourswerestudiedbyX-raydiffraction.Theresultsshowthattheself-assemblywerecontrolledbyintermolecularhydrogenbondsandπ-πstackingeffects.

简介：Inthispaper,exponentialtyperegressionmodeisareconsideredfromgeometricpointofview.Thestochasticexpansionsrelstingtotheestimatearederivedandareusedtostudyseveralasymptoticinferenceproblems.Thebiasesandthecovariancesrelatingtotheestimatemaybecalculatedbasedontheexpansions.TheinformationlossoftheestimateandalimittheoremconnectedwiththeobservedandexpectedFisherinformationsareobtainedintermsofthecurvatures.

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简介：PLAispresentlyconsideredasthemostattractivecompoundfortemporarytherapeuticapplicationinthebiomedicalfield.Inthispaperwegiveanoverviewofthepresentknowledgeonthedegradationbehavior,processingtechnologyofPLAanditsapplicationinthefixationofbonefracture.

简介：最近，产生在的许多重要非线性的部分微分方程使用了物理、数学的科学被一条流行途径处理了，所谓的终止功能方法。在这份报纸，我们由分析最近的结果的这个方法的现在的一些缺点出版了报纸。我们也讨论方法的有效性的可能的改进。

简介：Polymersupportedalkyldimethylbenzylammoniumchlorideresindisinfectantusedforthedisinfectionofdrinkingwaterhasbeensynthesized,anditsantibacterialactivitieshavebeendetermined,comparedwiththecommerciallyusedtriiodinedisinfectantresin.Theresindisinfectantwasgeneratedsuccessfullywhenusethecombinationofsurfaceactiveagentsandultrosonic.

简介：Firstly,thispaperreviewsHall'stheoryofbootstrapcriticalpoints(Hall,1988)andtheEdgeworthexpansionforthemetrodirectionσ=μ(Fn)ofdirectionaldata(Wu&Deng,1996),andthenappliesHall'sresultstostudysixbootstrapconfidenceintervalsforcircularmeandirectionμ=μ(F).OurresultsshowthatSTUD-intervalandABC-intervalarebothsecond-ordercorrect.ForyonMisespopudationM(μ,k),wefindthatsixbootstrapconfidenceintervalsaxeseeond-ordercorrectliketheapproximatenormalconfidenceinterval,andSTUD-intervalisthird-ordercorrect.

简介：Ellipticequationistakenasanansatzandappliedtosolvenonlinearwaveequationsdirectly.Morekindsofsolutionsaredirectlyobtained,suchasrationalsolutions,solitarywavesolutions,periodicwavesolutionsandsoon.Itisshownthatthismethodismorepowerfulingivingmorekindsofsolutions,soitcanbetakenasageneralizedmethod.

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简介：Becauseofthesuccessofthediscretevortexmethodforthesimulationoflarge-scalevortexstructure.manyresearchersextendthismethodtotwo-phaseflowsimulations,especially,tothesimulationofparticledispersioninmixinglayer,whichischaracterizedbylarge-scalevortexstructure,Butthepreviousworkislimitedtoone-waycouplin,whichneglectstheeffectofparticlesonfluidflow.Inthispaperadiscretevortexmethodinvolvingtwo-waycouplingfortwo-phaseflowsisfristproposedandthenusedinnumericalsimulationoftwo-dimensionalgas-particlemixinlayersThenumericalresultsshowthattheintroductionofparticlesintothemixinglayerhassignificanteffectsonthecreation,developmentandmergingprocessoflarge-scalevortexstructures.Itmakesthemeansizeoflarge-scalevortexstucturelargeandthedistanceneededfordevelopmentoflarge-scalevortexsturctureshorter.

简介：Therearethreemainproblemsintheweaklynonlineartheoryofhydrodynamicstability:(1)Thera-diusofconvergencewithrespecttotheperturbationparameteristoosmallandthereisnoconcreteestimationforit.(2)Thesolutionhasaspecialstructure,thusingeneral,itcannotsatisfytheinitialconditionposedbymanypracticalproblems.(3)Whenthelinearpartofitssolutiondoesnotcorrespondtoaneutralcase.therearemorethanonewayindeterminingtheLandauconstants,andpracticallynooneknowswhichisthebestway.Inthispaper,problems(1)and(2)aresolvedtheoretically,andwaysforitsimprovementhavebeenproposed.Bycomparingthetheoreticalresultswiththoseobtainedbynumericalsimulations,problem(3)hasalsobeenclari-fied.