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

简介：Plantleafisanaturalcompositebiomaterial,anditsstrengthiscloselyrelatedtothemicrostructure.Inthispaper,themechanicalcharacteristicsofeightspeciesofplantleaveswereinvestigatedandanalyzed.Theultimatestrengthofleavesandthehardnessofleafsurfacesweremeasuredbyusinguniversaltestingmachineandnanoindentertester,respectively.Thetensilestrengthoftheparallelmicrostructurewasinvestigatedbasedonitscross-sectionalmechanicalmodel.Theresultsoftensiontestsindicatethattheultimatestrengthofaleafisrelatedtothematerialcompositionandstructure.Thecoriaceousleavesusuallyexhibithighertensilestrength.Forexample,thePhyllostachyspubescensleafcanachievethemaximumultimatestrengthof5.9091N·mm-2.Itisconcludedfromtheresultsofhardnessteststhatmaterialcomponentsofleafsurfacecaninfluencethesurfacehardnessevidently.Theleafsurfacecomposedofmoreligninandcellulosematerialsshowsahighersurfacehardnessthanthatcomposedofmorecarbohydratesmaterials.

简介：

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

简介：

简介：

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.

简介：

简介：基于处理15Mt/a的综合精制/化学植物粗略、生产在“从事由任何适当工具精制，石蜡和aromatics最大化综合精制/化学植物的全面价值”的指南下面的乙烯的1.0Mt/a，专注于是必要的研究为在精炼厂和乙烯植物之间的材料的相互的供应的流动图和答案。在分析产品的化工物品板岩，作文和性质以后，优化综合精制/化学工厂以便减少投资和操作费用认识到综合工厂的价值的最大化被建议。

简介：

简介：Thechoosingofagoodsiteandtheconceivingofagoodlay-outarebyfarthemostimportantfeaturesintheengineeringanddesignofafossilpowerplant.Agoodandwellplannedsitewillreducebymillionofdollarsthecostofconstructioninvestment,offueltransportationandwastedisposal,ofservicepowerandalsopowertransmission,etc.andhencetheoverallcostofpowergenera-tion.

简介：<正>TheceremonyforissuingtheinstrumentofratificationonfirstfuelloadingtoUnit.1ofTianwanNuclearPowerPlantwasholdonOctober23thisyear.TheStateEnvironmentalProtectionAdministrationissuedthisinstrumentattheceremony.Onthesameday,ninety-fivegroupsofPWRfuel

简介：Therehasbeenacontroversialissueinphylogeneticrelationshipsamonganimals,fungi,andplants.

简介：

简介：BaojiNo.2PowerPlantsituatedatShitoupevillage,ChangqingTownship,FengxiangCounty,BaojiCity,hasaplannedgeneratingcapacity4×300MW,andatotalcapitalinvestment6.25billionyuanRMB.TheStateInvestmentBankandShaanxiProvincialgovernmentinvests70%and30%respectively.Thefirstunitisplannedtobecommissionedin1998,andtotallycompletedintheyear2000.TheBaojiNo.2PowerPlantprojectislistedasastatekeyconstructionprojectinthe9thFive-yearPlanperiodandtakenalsoasademonstrativeoptimizingand

简介：Thequantityofslagandashdischargedfromcoal-firedpowerplantsgrowsinstepwithdevelopmentofelectricpowerindustry,thedisposalofwhichimposesaheavyburdenontheoperatingplantsandtoacertainextentexertsaneffectofrestrainingthedevelopmentofcoal-firedpowergeneratingunits.Presentlyash

简介：TheaveragecoalconsumptionofthermalpowerplantsinShandongProvincialGridwasreducedfrom449g(standardcoal)/kWhin1979to389g(standardcoal)/kWhin1989,asinrecenttenyears,thethermalpowerplantsofShandongProvinceadoptedthemethodofconstructinglargescalegeneratingunitsandimprovingtheeconomicperformanceofoldgenerationunits,mean-whiletheothertechnicalandeconomicaltargetsalsowereimprovedsignificantly.Forinstance,theelectricenergyconsumptionrateof

简介：TheaquaticfernsofthegenusAzollaarenitrogen-fixingplantsthathavegreatpotentialsinagriculturalproductionandenvironmentalconservation.Azollainmanyaspectsisqualifiedtoserveasamodelorganismforgenomicstudiesbecauseofitsimportanceinagriculture,itsuniquepositioninplantevolution,itssymbioticrelationshipwiththeN2-fixingcyanobacterium,Anabaenaazollae,anditsmoderate-sizedgenome.ThegoalsofthisgenomeprojectarenotonlytounderstandthebiologyoftheAzollagenometopromoteitsapplicationsinbiologicalresearchandagriculturepracticebutalsotogaincriticalinsightsaboutevolutionofplantgenomes.TogetherwiththestrategicandtechnicalimprovementaswellascostreductionofDNAsequencing,thedecipheringoftheirgeneticcodeisimminent.

简介：