学科分类
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500 个结果
  • 简介:醋酸是一件基本器官的化学化工物品。作为醋酸的最快的成长市场,中国在2006在200万大量醋酸上消费了。南京为它的石油化学的工业的开发认为醋酸工业是钥匙。

  • 标签: 醋酸 南京市 化工基地 化工企业
  • 简介:Systematicstudiesonthetreatmentandreuseoftheacidindustrialwatewatercontainingsodium2-Naphthylsulfonate(β-salt)from2-NaphthanolproductionprocessbyND-910resin(madebyself)isreportedinthispaper.Undertheoperationconditionsofinitialβ-saltconcentrationof10000-25000mg/LandinitialCODCrof20000-40000mg/L,theremovalratesofSodium2-NaphthylsulfonateandCODCrareover95%andover89%,respectively.Theeffluentcanbedischargeddirectlyafterbiologicaldegradation.TheworkingsorptioncapacityofND-910Resinforβ-saltisover230g/kg.Analkali-waterwashprocedureisutilizedtoregenerateresinandthereclaimingrateofβ-saltisover98%.

  • 标签: 2-萘并吡咯生产 废水处理 废水再用
  • 简介:六中间季节的indica混血儿米饭联合,包括五超级混合米饭,有高度的联合与一个收益潜力产出大约10.5t/ha和检查混血儿米饭联合Shanyou63大约9.5t/ha,被用作材料学习干燥的事生产特征。超级混合米饭在随干燥的事累积的增加提高的干燥的事生产和累积和它的收益显示出一个高能力。在超级混合米饭的干燥的事生产的优点时期与检查相比主要在中间、迟了的生长阶段。当有时,谷物收益没在延伸阶段前与干燥的事累积有重要关联与到成熟的从延伸的干燥的事累积的显著地积极的关联在超级混合米饭上演。在在在超级混合米饭的出发阶段的植物的机关有更多的干燥物质,但是它产出的贡献(明显的变换百分比)是平均,4.3%点在检查比那降低。为庄稼生长率(CGR),超级混合米饭的比较优点在中间、迟了的阶段,特别在flowering以后。而且作为叶区域索引(LAI)和叶区域持续时间(男孩)升起,CGR提高了。全部的男孩和男孩的平均数分别地比检查的那些高每超级混合米饭的天是大约14.79%和10.31%。结果显示超级混合米饭的高收益主要在出发以后来自光合作用的产品,它被增加的CGR在中间、以后的阶段显示出。男孩特性可能被用来更好比LAI在超级混合米饭的干燥的事生产解释优点,这被建议。

  • 标签: 超级杂交水稻 干物质生产 作物生长比 叶面宽度
  • 简介:Asequentialstatisticalapproachwasappliedtooptimizingthefermentationmediumofepothilones(Epos)productionbymeansofamutantwhichwasobtainedbytreatingpolyangiumcellulosumATCC15384withnitriteandultraviolet.Theeffectsofdifferentcarbonsourcesandnitrogensourcesonthefermentationmediumweretested,andthesuitableoneswereselected.Thenauniformdesignwasemployedtodesigntheexperiments.Alinearmodelwasdevelopedforidentifyingthesignificantcomponentsinfermentationmedium,whileathirddegreepolynomialmodelwasusedforstudyingtherelationshipbetweentheconcentrationofthecomponentsinfermentationmediumandtheyieldofEpos(YEPs).Apatternsearchmethodwasusedforsearchingtheoptimumfermentationmediuminthetestspace,whichwasasfollows(g/L):potassiumnitrate8.00,soybeanpeptone17.60,potassiumhydrogenphosphate1.00,beefextraction6.46,yeastextraction1.00,calciumchloride0.25,sodiumchloride1.00andferricchloride0.02.TheoptimumfermentationmediumwasexpectedtoresultinayieldofEpos(YEPs)of2.48mg/L.ThevalidationexperimentswiththeoptimummediumwereperformedintriplicateandtheaverageyieldofEposwas2.45mg/Lwhichwas7.78timeshigherthanthatofEpospreparedwithoutoptimization.

  • 标签: 发酵培养基 生产方法 埃坡霉素 顺序统计 优化 测试空间
  • 简介:ThispaperpresentsafurtherimprovedProductionActivityControlArchitecturetodealwiththecomplexityofinformationbycreatingSub-ProducersandSub-MoverswhichwillnotonlygiveabettercontrolatworkstationlevelbutalsoreduceloadontheDispatcher.ItalsomakesananalysisofthebasicandimprovedPAC(ProductionActivityControl)ArchitectureintheControlSystemforIntegratedManufacturing.ThePACArchitectureandtheimprovementwillfurtherenhancetheflexibilityandadaptabilityofthearchitectureintheeverchangingenvironmentoftheShopFloorControl(SFC)Systems.

  • 标签: MANUFACTURING system SHOP FLOOR CONTROL PRODUCTION
  • 简介:Basedontheanalysisofthebioenergycropproductionfunctionoflanduse,combinedwiththestatusquoofChineselanduse,thecultivationofenergyplantsandthebioenergycropproductionfunctionoflandusehadbeenanalyzesanddiscussesinthispaper.Resultsshowthattherewerealotofunusedlandsandmarginallandswhichcanbeplantedbioenergycropstoperformthebioenergycropproductionfunctionoflandusewithgreatpotentials;andcurrentlytherewerenofoodproductionproblems.Therefore,itwasveryimportantforChinatoemphasizebioenergycropsplantinginordertofullyuselandresourcesinourcountry,moderatetheenergycrisisandincreasepeasants'income.

  • 标签: 土地使用 生物能源 作物生产 中国 植物种植 能源作物
  • 简介:Asakindofaerobicbacteria,Saccharopolysporaspinosaexhibitsahighdemandforoxygen.Inthefermentationprocess,themethodsofincreasingventilationandimprovingagitationspeedareusuallyadoptedtoachievehighervaluesofdissolvedoxygen.Thesemethodsdecreasetheefficiencyofspinosadbiosynthesis.Inthisstudy,animprovedreactorwasdesignedtosolvetheseproblems.Theexhaustgasrefluxdevice,impellers,andbaffleswereimproved.Furthermore,weestablishedthekineticmodelsforthecellgrowth,substrateconsumptionandspinosadgenerationinbatchfermentationprocess.Thesimulationresultswereingoodagreementwiththeexperimentaldata.Spinosadproductionreached583.86mg/Lafteremployingthesuitablefeedingstrategybyfed-batchfermentationintheimprovedreactor,whereasitwasonly157.01mg/Lbeforeoptimization.Themethoddescribedcanprovideinsighttostrengthenspinosadproductionandcanbeextendedtotheculturingprocessoffilamentousaerobicbacteria.

  • 标签: SPINOSAD Bioreactors FED-BATCH FERMENTATION SACCHAROPOLYSPORA spinosa
  • 简介:Anoveladditiveincorporatedintothecatalystforremovingtraceolefinsfromaromaticswasproposed,andunderthelaboratoryconditionsthelifetimeofthecatalystwasincreasedfrom5hto8huponspecifyingtheconversionoftheolefinsequatingtomorethan55%asacriterion.Catalystproduction,whichwasnamedROC,hasbeensuccessfullyscaledupfromlaboratoryformulationstocommercialscalemanufactureandover100tonsofcatalysthadbeenproduced.ThesuperiorityincatalyticactivitywasidentifiedbytheevaluationtestsoftheROCcatalystbasedonwhateverkindoffeedstocks(withtheirbromineindexrangingfrom400mgBr/100gto1200mgBr/100g)beingusedasthefeedstock.TheX-raydiffractionpatternshadverifiedthattheadditivewashighlydispersedonthesurfaceofcatalyst;theGC-FIDanalysisresultsshowedthattheROCcatalystcouldincreasethexylenecontent;thepyridine-FTIRspectroscopicanalysessuggestedthattheadditivecouldincreasetheamountoftheweakLacids,whichwasthemaincauseleadingtoenhancementofthecatalystactivity.

  • 标签: 催化剂 工业生产 烯烃 芳烃 实验室条件 GC-FID
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  • 简介:Hydrogen,thecleanestandmostpromisingenergyvector,canbeproducedbysolarintochemicalenergyconversion,eitherbythephotocatalyticdirectsplittingofwaterintoH2andO2,or,moreefficiently,inthepresenceofsacrificialreagents,e.g.,intheso-calledphotoreformingoforganics.Efficientphotocatalyticmaterialsshouldnotonlybeabletoexploitsolarradiationtoproduceelectron–holepairs,butalsoensureenoughchargeseparationtoallowelectrontransferreactions,leadingtosolarenergydriventhermodynamicallyup-hillprocesses.RecentachievementsofourresearchgroupinthedevelopmentandtestingofinnovativeTiO2-basedphotocatalyticmaterialsarepresentedhere,togetherwithanoverviewonthemechanisticaspectsofwaterphotosplittingandphotoreformingoforganics.Photocatalyticmaterialswereeither(i)obtainedbysurfacemodificationofcommercialphotocatalysts,orproduced(ii)inpowderformbydifferenttechniques,includingtraditionalsolgelsynthesis,aimingatengineeringtheirelectronicstructure,andflamespraypyrolysisstartingfromorganicsolutionsoftheprecursors,or(iii)inintegratedform,toproducephotoelectrodeswithindevices,byradiofrequencymagnetronsputteringorbyelectrochemicalgrowthofnanotubearchitectures,orphotocatalyticmembranes,bysupersonicclusterbeamdeposition.

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  • 简介:Thispaperdiscussesintegratedproductandproductiondatamanagementforassembly-to-orderproduction,whichischaracterizedbyalargenumberofproductandprocessvarieties.Adatastructure,calledBill-of-Materials-and-Assemblies(BOMA),isproposedforthepurposeofunifyingBOMandassemblyroutingdatainordertoaccommodateawiderangeofproductvariabilityandproductionvariations.AgenericBOMAconceptisputforwardtodealwithvarietyeffectively.AprototypesystemoftheproposedgenericBOMAisimplementedusingobject-orientedmodeling.

  • 标签: Bill-of-materials assembly-to-order VARIETY
  • 简介:在一家attritor工厂和最小的可完成的粒子尺寸的nanoparticles的磨擦行为被暂停稳定性强烈影响。在现在的工作,暂停稳定性(即nanoparticles的-potential)被作为在湿milling过程磨时间的功能测量pH学习。在在一家attritor工厂的某个时间以后,monotonically没有进一步的尺寸减小和平均产品粒子尺寸增加,这被发现。原因之一是亚微米粒子的生产导致更多的particleparticle相互作用,因而,暂停的pH与磨时间减少。通常pH价值与暂停稳定性有关,它能被NaOH的增加提高解决方案。51.2mV的最大的否定潜力为硅石在12的pH被获得。更高有一样的极性的潜力,将更高是在粒子之间的静电的排斥。因此,最大的静电的排斥力量被pH价值的调整在湿milling维持。实验以是在整个实验的维持的常数的不同pH条件被进行,nanosized粒子因而被获得。

  • 标签: 悬浮稳定性 ξ势能 纳米矿物粒子 硅石 湿磨 碾磨机
  • 简介:InthepaperthebasicelementsofCADsystemsfromsoftwarepointofviewaredis-cussed.ThecreationandnextthemodificationofCADsystemsneedsspecializedsoftwaretools.InthepapertheideacomputerAidedSoftwareEngineering(CASE)forCADsystemsproductionandpracti-calsoftwarerealizationofsuchasoftwaretoolisconsidered.ThemainelementofthistoolisspecialprogramprovidedforconvenientstorageandmodificationofCADsourceprogram.Inthepaperthesimpleexamplesarepresentedanddiscussed.

  • 标签: COMPUTER aided SOFTWARE ENGINEERING CASE SOFTWARE
  • 简介:Thesimulationprogramdevelopedbythe"ModelsofNetworkedAnalysisatRegionalCenters"(MONARC)projectisapowerfulandflexibletoolforsimulatingthebehavioroflargescaledistributedcomputingsystems,Inthisstudy,wefurthervalidatethissimulationtoolinalarge-scaledistributedfarmcomputingsystem.Wealsoreporttheusageofthissimulationtooltoidentifythebottlenecksandlimitationsofourfarmsystem.

  • 标签: 软件开发 FARM MONARC实验
  • 简介:轮船生产尖系统是在造船的主要生产活动之一。管子生产的时间表在造船的主人时间表上有重要影响。在这研究,ITOC概念被介绍解决一家尖工厂的安排问题,并且一个聪明的安排系统被开发。系统,一个产品模型,一个操作模型,一个工厂模型,和尖生产的一个知识数据库集成于,自动化了安排的计划进程和生产。上述点的细节被讨论。而且,一家尖工厂里的系统的一个应用程序,完成了由缓慢,铅时间,和库存测量了的性能的高水平,被演示。

  • 标签: 生产调度系统 管道系统 船舶制造业 智能调度系统 知识数据库 生产活动