学科分类
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7 个结果
  • 简介:Comparativestudyontheactivityandkinecticpropertiesofacidphosphatase(ACPase)ofthreesoilsamendedwithHgandCuatconstanttemperatureandhumiditywascarriedout.TheresultsindicatedthattheinhibitiononACPaseofthethreesamplesoilsbyHgandCuvariedwiththecontentofsoilorganicmatterandpH,where,Soil1wasthemostseriouslycontami-natedduetoitslowestcontentoforganicmatterandthelowestpHamongthreesamples,Soil2tookthesecondplace,andSoil3wastheleastcontaminated.ExceptSoil3,theactivityofsoilACPasetendedtoincreasealongwiththecontacttimeunderthesametypeandthesameconcentrationofheavymetal.InparticulartheVmaxvaluesofACPaseinallthreesamplesdecreasedwithincreasingHgandCuconcentration,whereastheKmvalueswereaffectedweakly.AccordingtothechangeofVmaxandKmvalues,CuandHghadthesameinhibitioneffectonsoilACPase.Bothofthemmaybeatypeofcompoundofnon-competitiveandanti-competitiveinhibition.StatisticanalysesindicatedthatactivitiesofsoilACPaseandVmaxvaluescouldserveasbioindicatortopartiallydenotetheheavymetalHgandCucontaminationdegree.

  • 标签: 生物活度 土壤酸化 磷酸酶 生物化学
  • 简介:电子温度和电子数字密度是在血浆的描述的重要参数。在电子温度和土壤血浆的电子数字密度由激光产生了的这份报纸,脱离在不同分泌物电压与毫微秒分泌物火花结合了被学习了。Saha-Boltzmann阴谋并且空拓宽被用来决定温度和电子数字密度。本地热平衡在毫微秒火花被完成,这被证明提高的血浆。提高的光排放,到噪音比率的信号和以在不同火花电压的信号紧张的相对标准差的稳定性详细被调查。一个相对稳定的分泌物过程在带的试验性的配置下面与10kV分泌物电压的使用被观察。

  • 标签: 土壤温度 电子密度 等离子体 Stark加宽 电子数密度 放电电压
  • 简介:Basedonconsolidationequationsproposedforunsaturatedsoil,ananalyticalsolutionfor1Dconsolidationofanunsaturatedsingle-layersoilwithnonhomogeneousmixedboundaryconditionisdeveloped.Themixedboundaryconditioncanbeusedforspecialapplications,suchastestsoccurinlaboratory.Theanalyticalsolutionisobtainedbyassumingallmaterialparametersremainconstantduringconsolidation.Inthederivationoftheanalyticalsolution,thenonhomogeneousboundaryconditionisfirsttransformedintoahomogeneousboundarycondition.Then,theeigenfunctionandeigenvaluearederivedaccordingtotheconsolidationequationsandthenewboundarycondition.Finally,usingthemethodofundeterminedcoefficientsandtheorthogonalrelationoftheeigenfunction,theanalyticalsolutionforthenewboundaryconditionisobtained.Thepresentmethodisapplicabletovarioustypesofboundaryconditions.Severalnumericalexamplesareprovidedtoinvestigatetheconsolidationbehaviorofanunsaturatedsingle-layersoilwithmixedboundarycondition.

  • 标签: 英文摘要 编辑工作 优秀论文 医学期刊