简介：MITEs(Miniatureinverted-repeattransposableelements)arereminiscenceofnon-autonomousDNA(classⅡ)elements,whicharedistinguishedfromothertranspos-ableelementsbytheirsmallsize,shortterminalinvertedrepeats(TIRs),highcopynumbers,genicpreference,andDNAsequenceidentityamongfamilymembers.Al-thoughMITEswerefirstdiscoveredinplantsandstillactivelyreshapinggenomes,theyhavebeenisolatedfromawiderangeofeukaryoticorganisms.MITEscanbedividedintoTourist-like,Stowaway-like,andpogo-likegroups,accordingtosimilaritiesoftheirTIRsandTSDs(targetsiteduplications).Indespiteofsev-eralmodelstoexplaintheoriginandamplificationofMITEs,theirmechanismsoftranspositionandaccumulationineukaryoticgenomesremainpoorlyunderstoodowingtoinsufficientexperimentaldata.TheuniquepropertiesofMITEshavebeenexploitedasusefulgenetictoolsforplantgenomeanalysis.UtilizationofMITEsaseffectiveandinformativegenomicmarkersandpotentialapplicationofMITEsinplantssystematic,phylogenetic,andgeneticstudiesarediscussed.

简介：RE-containingfertilizer,developedbytheStateAgriculturalAssociationincollaborationwitharesearchgroupofBeijingNon-FerrousMetalResearchIns-titute,hasbornefruitsinChina’sagri-culture.Theeffectivenessofthisfer-tilizer,calledNongle,isstriking.In1986,farmersinSouthChina’sGuangxiZhuangAutonomousRegionused

简介：Thestrongestsignalofplantpromoterissearchedwiththemodelofsinglemotifwithtwotypes.ItturnsoutthatthedominanttypeistheTATA-box.TheothertypemaybecalledTATA-lesssignal,andmaybeusedingenefindersforpromoterrecognition.WhiletheTATAsignalsareverycloseforthemonocotandthedicot,theirTATA-lesssignalsaresignificantlydifferent.Ageneralandflexiblemulti-motifmodelisalsoproposedforpromoteranalysisbasedondynamicprogramming.ByextendingtheGibbssamplertothedynamicprogrammingandintroducingtemperature,anefficientalgorithmisdevelopedforsearchingsignalsinplantpromoters.

简介：1.0IntroductionWaigaoqiaoPowerPlantisoneofimportantinfrastructureofShanghaiPudongNewArea.Thecapacityofthefirstphaseprojectisof1200MW,withfour(4)domesticmadeandtechnologyintroduced300MWcoal-firedunits.ThisprojectwasapprovedbyStatePlanningCommissioninApril1990,andalsoassignedbytheMinistryofEnergyandMinistryofMachineryand

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简介：ThankstotheeffortsjointlymadebytheChinesebuyerandtheTechnopromexportasSeller,contractsonSuizhongandYiminpowerplantprojects,identifiedascounter-tradeprojectsintheSino-SovietLongTermTradeAgreement(1986-1990),weresignedonDecember27and30,1990re-spectively.

简介：ＴｈｅＢｅｉｊｉｎｇ－ｂａｓｅｄＳｙｎｔｈｅｔｉｃＲｕｂｂｅｒＰｌａｎｔｏｆｔｈｅＹａｎｈｕａＰｅｔｒｏｃｈｅｍｉｃａｌＣｏ．Ｌｔｄ．ｉｓＣｈｉｎａ’ｓｌａｒｇｅｓｔｅｎｔｅｒｐｒｉｓｅｐｒｏｄｕｃｉｎｇｓｙｎｔｈｅｔｉｃｒｕｂｂｅｒ．Ｂｕ...

简介：Inthispapertheeffectsofthecondenserdesignparameters(suchasturbineinletcondition.turbinepowerandcondenserpressure)onheattransferarea,coolingwaterflow-rate.condensercostandspecificenergygenerationcostarestudiedforsurfacetypecondenser.Theresultsaregiveninthetextandalsoshownasdiagrams.

简介：LocatedinthesouthofChina,LiyangRareEarthGeneralPlantisboundedonNanjing,ShanghaiandHangzhouandenjoysthecon-venienceinbothlandandwatertransportation.Theplantstarteditsproduc-tioninJune,1987andwasenlarg-editsannualproductioncapacityto800tonsofion-adsorptionrareearthmineralsin1989.It

简介：Thispaperstudiesthemodellingandsimulationforallformsofhcaters.Theassumptionofformerdaysthatthetemperatureofcondensationisthesaturationtemperaturecorrespondingtoheaterpressureinsteamsideisnolongerused.Onthebasisofthelawsofconservationofmass,energyandmomentum,themathematicalmodelofheatersisestablishedandthesimulationcalculationofa125MWunitismade.Thercsultshowsthatthemodelisapplicableforvariouskindsofsteam-waterheaterinpowerplant.

简介：Thispaperpresentstheworkingprocedureofpowergeneratingenterprisesandexplainstheframeworkofane-power-plantanditsinformationsystem,putsforwardtheguidelineandthegeneralgoalofinformatizationconstructionwhilefocusingontheconstructiongoalintheappliedsystem,theimplementingstrategy,theprojectmanagementandorganization.

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简介：ＲＥＬＥＡＳＥＤＣＯＮＶＩＣＴＳＰＬＡＮＴ“ＲＥＰＥＮＴＡＮＣＥＦＯＲＥＳＴＳ”￥／／ＯｎｅｖｅｒｙｔｒｅｅｐｌａｎｔｉｎｇｄａｙｉｎＨｅｉｌｏｎｇｊｉａｎｇｐｒｏｖｉｎｃｅ，ｔｈｅＨｕｌｉｎｃｏｕｎｔｙｃｏｕｒｔａｎｄｐｒｏｃｕｒａｔｏｒａｔｅｏｒ...

简介：Theuseofmolecularbiologyandgenomicstoolsinplantbiologyresearchhasgreatlyexpandedourunderstandingofthemolecularmechanismsthatunderlieplantdevelopmentandphysiology.Thesuccessfulestablishmentofresearchresourcessuchasmutantpopulationshasledtoprogressinavarietyoffields,includingplantreproductivedevelop-ment,signaltransduction,hormonefunctions,defenseresponsesandepigeneticcontrol.Inthefuturetheseadvanceswillpotentiallyfacilitatecropimprovementthroughmolecularbreeding.

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简介：ThecaprolactamplantofBalingPetrochemicalCompany,SINOPEChasbeenoperatingcontinuouslyforfouryearswithoutshutdownforoverhaul.Debottleneckinghasbeenachievedthroughoptimizingtechnologyandtechnicalinnovation.Caprolactamproductionreached72kt/aandcyclohexanoneproductionreached69kt/awithtotaloutputvalue850millionRMB.

简介：提取高质量的植物基因组ＤＮＡ是顺利开展ＲＡＰＤ分析研究的一项重要基础工作，在目前比较广泛使用的植物基因组ＤＮＡ的提取方法中，改进的Ｄｏｙｌｅ和Ｄｏｙｌｅ等人的ＣＴＡＢ植物基因组ＤＮＡ提取法被证实为一种简单、高效的方法，值得推荐．更多还原

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简介：Plantcelllinesdifferredgreatlyintheabilitytowithstandshearstresses.Usingto-baccocellsandlicoricecellsasmodelplantcells,westudiedtheeffectsofshearstressesonthevi-abilityofplantcells.OurexperimentswerecarriedoutonahighshearrateCouetterheometerprovidinghomogeneousandconstantshearstressesoflaminarflow.TheviabilitywasdeterminedbyTTC（2,3,5-Triphenyltetrazoliumchloride）.Theresultswereasfollows.（1）Theviability（V）droppedexponentiallywithtime（t）,namelyV=Exp（-kt）,（k>oisaconstant）.Thismeantthetenabilityofstatisticalhomogeneity.（2）Thevalueofkwasafunctionofplantcells’mechanicalpropertiesandtheshearstressactingontheplantcells.Theshearratecorrespondingtok=owasthecriticalshearratethattheplantcellscouldwithstand.Itcanbeeasilydetermindedbyextrapo-lation.For7-day-oldtobaccocells,itwas1090s-1andfor9-day-oldlicoricecells,itwas6566s-1.（3）Theplantcellsuspensionswerepseudoplasticfluidsfittingτ=Kγn.Forthetobaccocellsus-pensiontested,n=O.73,andforthelicoricecellsuspensiontestedn=0.7.Thusthecriticalshearstressforthetobaccocellswas25dynes/cm2andforthelicoricecellsitwas80dynes/cm2.（4）Oneoftheirreasonsforlicoricecellstohavegreatertolerancetoshearstressesthantobacaccocellsmaybethegeometricfeaturesofthecellsandthesizesofthecells.Thelicoricecellswererod-shaped,butthetobaccocellsweresphericalandlargerthanthelicoricecells.