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  • 简介:Thesteady-stateelectricalconductivity,aswellasthedielectricpropertiesbetween2×10-4Hzand100kHz,andat1GHz,arereportedforureasecompressedpowdersamplesoflowhydration.Theresultsshowthatthelarge,lowfrequencydielectricdispersion,knownasα-dispersion,isduetothebuild-upofaspacechargeofprotonsatthesample-electrodeinterfaces.Asmallerdispersion,appearingathigherfrequencies,isconcludedtobeassociatedwithhinderedmotionsofthepeptideresiduesinthemolecularstructureofurease.Theextentofthesepolypeptidebackbonemotionsisshowntobestronglydependedontheextentofenzymehydration.Thisworkiscontributedtothede-velopmentofconductimetricbiosensors.

  • 标签: UREASE HYDRATION molecular ELECTRONICS BIOSENSOR DIELECTRIC
  • 简介:ThepurposeofthispaperistoverifytheSmulyanlemmaforthesupportfunction,andalsotheGateauxdifferentiabilityofthesupportfunctionisstudiedonitsdomain.Moreover,weprovideacharacterizationofFrechetdifferentiabilityofthesupportfunctionontheextremalpoints.

  • 标签: Frechet and Gateaux DIFFERENTIABILITY SUPPORT function strict
  • 简介:Researchonjumpregressionfunc(?)onshasnotbeenadequateyetAccordingtotheinformationaboutthenumberofjumps,theirpositionsandjumpmagnitudes,jumpregressionfunctionscanbeclassifiedintoeighttypes.Thispaperdealsespeciallywiththesecondjumpregressionfunction.Firstofall,aconceptoftrimmedsplineestimateisproposedandwithitanL~2-consistentestimateofthesmoothingpartofthejumpregressionfunctionisobtained.ThisalongwiththeL~2-consistentestimateofjumpmagnitudeconstitutesanestimateofthesecondjumpregressionfunction.Thispaperdiscussesalsothecasethatthejumppositionshavesomeindeterminacy.Anewcriterionissuggestedanditsuniquesolutionderived.Intheend,afewnumericalresultsaregiven.

  • 标签: JUMP regression function trimmed SPLINE ESTIMATE
  • 简介:Thewater-conductingnetworkofcapillariesinvascularplantshasevolvedoverhundredsofmillionsofyearsinordertobeabletocopewithbubbleclogging,aproblemwhichalsoaffectsmodernmicrofluidicdevices.Decadesofanatomicalstudieshaverevealedthatplantsgrowinginhabitatsinwhichtheformationofbubbles,oremboli,islikelytobeafrequentoccurrenceoftenhavevariousformsofgeometricalsculpturingontheinternalsurfacesofthexylemconduits.Thepossiblefunctionofsuchwallsculpturinghaslongbeenthesubjectofspeculation.Wehaveinvestigatedthehypothesisthatwallsculpturingisafunctionaladaptationdesignedtoincreasethewettabilityofthewallsofxylemconduits,aneffectwhichcouldbedescribedastheinverseofthewell-knownlotus-effect.Ourresultsshowthatwallsculpturingdoesenhancewettability.Importantly,theoreticalcalculationsrevealthatthegeometricparametersofvarioustypesofwallsculpturingaresuchthattheresultingsurfacesaresufficientlyroughtoenhancewettability,butnotsignificantlyrougher.Theresultsprovideanappealinganswertothelong-standingdebateonthefunctionofwallsculpturinginxylemconduits,andmayprovidebiomimeticcluesfornewapproachestotheremovalofbubblesinmicrofluidicchannels.

  • 标签: XYLEM WETTABILITY CAPILLARY WALL sculpturing BUBBLE
  • 简介:WeestablishtheconstructiontheoryoffunctionbaseduponalocalfieldKpasunderlyingspace.Byvirtureoftheconceptofpseudo-differentialoperator,weintroduce"fractalcalculus"(or,p-typecalculus,or,Gibbs-Butzercalculus).Then,showtheJacksondirectapproximationtheorems,BermsteininverseapproximationtheoremsandtheequivalentapproximationtheoremsforcompactgroupD(Kp)andlocallycompactgroupK+p(=Kp),sothatthefoundationofconstructiontheoryoffunctiononlocalfieldsisestablished.Moreover,theJacksontype,Bernsteintype,andequivalentapproximationtheoremsontheH?lder-typespaceCσ(Kp),σ>0,areproved;thentheequivalentapproximationtheoremonSobolev-typespaceWrσ(Kp),σ≥0,1≤r<+∞,isshown.

  • 标签: 函数构造 逼近定理 微分算子 局部紧群 伯恩斯坦 索伯列夫
  • 简介:传统地,睾丸激素和雌激素被认为分别地是男、女的性荷尔蒙。然而,estradiol,雌激素的占优势的表格,也在男性功能起一个关键作用。在人的Estradiol为modulating性欲,可勃起的功能,和精子发生是必要的。雌激素受体,以及aromatase,把睾丸激素变换成雌激素的酶,充满大脑,阴茎,和睾丸,为性功能重要的机关。在大脑,estradiol合成在与性唤起有关的区域被增加。在阴茎,另外,雌激素受体在神经与血管的捆附近与高集中在整个阴茎海绵体被发现。低睾丸激素和提高的雌激素独立于对方增加可勃起的机能障碍的发生。在睾丸,精子发生被雌激素在每水平调制,以hypothalamus-pituitary-gonadal轴开始,由Leydig,Sertoli,和细菌房间列在后面,并且与ductal上皮,epididymis,和成熟精子完成。由estradiol的阴囊的房间的规定显示出两个一禁止并且stimulatory影响,显示剂量依赖者并且时间地的一曲复杂交响乐敏感调整。我们在这评论的目标是阐明到由看荷尔蒙的男性功能的estradiol的全面贡献在可勃起的功能,精子发生,和性欲上完成。

  • 标签: 雌二醇 男性 生殖功能 下丘脑-垂体-性腺轴 雌激素受体 睾丸细胞
  • 简介:CONSISTENCYFORKERNELESTIMATEOFCONDITIONALFUNCTION¥HUShuhe(DepartmentOfMathemotics,AnhuiUniversity,Hefei230039,China)Abstract:...

  • 标签: CONDITIONAL FUNCTION KERNEL ESTIMATE improved KERNEL
  • 简介:ObjectiveThemainpurposeofthepresentstudywastodescribethevestibularfunctioninpatientswithauditoryneuropathy(AN),andtoassesstheirabilitytomaintainbalance.MethodsVestibularfunctiontestswereperformedon32patientswithANand36normalsubjectsincludingelectronystagmopraphy(ENG)andstaticpostrography(SPG).Theresultsfromthetwogroupswerecompared.ResultsEquilibriumfunctioninpatientswithAN,wasabnormal,comparedtonormalsubjects.ConclusionVestibularfunctiontests,espe-ciallystaticpostrography,shouldbeperformedonpatientswithAN.

  • 标签:
  • 简介:Regulatingserotoninexpressioncanbeusedtotreatpsychoticdepression.Mifepristone,aglucocorticoidreceptorantagonist,isaneffectivecandidateforpsychoticdepressiontreatment.However,theunderlyingmechanismrelatedtoserotonintransporterexpressionispoorlyunderstood.Inthisstudy,weclonedthehumanbrainserotonintransporterintoXenopusoocytes,toestablishaninvitroexpressionsystem.Two-electrodevoltageclamprecordingswereusedtodetectserotonintransporteractivity.Ourresultsshowthatmifepristoneattenuatesserotonintransporteractivitybydirectlyinhibitingtheserotonintransporter,andsuggeststhattheserotonintransporterisapharmacologicaltargetofmifepristoneforthetreatmentofpsychoticdepression.

  • 标签: 转运功能 五羟色胺 米非司酮 非洲爪蟾卵母细胞 调控 受体拮抗剂
  • 简介:Wienerfilteringisusedtoestimatereceiverfunctioninatime-domain.Withtheverticalcomponentof3-componentteleseismicPwaveformastheinputofaWienerfilter,receiverfunctionasthefilterresponse,andradialandtangentialcomponentsastheexpectedoutput,receiverfunctionisestimatedbyminimizingtheerrorbetweenexpectedandactualoutputs.ReceiverfunctioncanbeobtainedbysolvingtheToeplitzequationusingtheLevinsonalgorithm.Thenon-singularityoftheToeplitzequationensuresthestabilityofWienerDeconvolution.BothsyntheticandobservationalseismogramcheeksshowthatWienerDeconvolutionisaneffectivetime-domainmethodtoestimatereceiverfunctionfromteleseismicPwaveform.

  • 标签: 接受机 函数 估计 最佳化 运算法则 地震波
  • 简介:Multi-functionaldendrometerisakindofforestrytoolthatcanmeasuremultiplefactorsofforest.Bycombiningsensortechnologyandcomputertechnology,adigitalmulti-functiondendrometerhasbeendeveloped,whichintegratedthefunctionsofmeasuringheight,distance,azimuth,slope,elevation,formquotientofanypartsofthestemintoonebodyatthesametest.Thedendrometercanfitthecomplexforestenvironment,solvethedifficultproblemsinaspectsofplantheight,measuredistance,centraldiameterandformquotientofbreastheight.Theaccuracycanmeettherequirementsofgeneralforestsurvey.

  • 标签: DIGITAL multi-function DENDROMETER form QUOTIENT of
  • 简介:关键词艾灸治疗-健康提升艾灸-预防的药鍏抽敭璇?鐏告硶-淇濆仴鐏?-棰勯槻鍖诲CLC数字R245.8资金项目:中国的国家基本研究节目(973编程序,2009CB522904);湖南省(08C633)作者的教育部门的工程:YANJie(1941鈥?,女性,教授,博士优异通讯作者:吴焕干(1956鈥?,男性,教授,博士上级

  • 标签: 灸法 保健灸 预防医学