简介:摘要本文从实验及工程角度论述了MAP法处理阳极氧化表面处理含氨氮废水的可行性。通过实验控制n(NH4+)n(Mg2+)n(PO43-)=111条件下,pH控制在8.5-9.5效果最好。当ph10以上,相对运行成本高,除去效率也随着ph进一步升高而降低。当实验控制pH为9.5,氨氮浓度控制在170mg/L,磷酸根浓度过量情况下。控制n(NH4+)n(Mg2+)摩尔比大概在1.3左右,氨氮去除效果最高达到了97.85%。通过实际运行发现阳极氧化废水,在一段物化沉淀出水与二段物化反应系统之间添加MAP反应系统,pH控制在8.5-9.5之间,n(NH4+)n(Mg2+)摩尔在1.3左右,氨氮去除效果明显,添加MAP法预处理之前氨氮平均浓度80.5mg/L,MAP添加后降低到40.3mg/L效果明显。氨氮预处理去除率提高23.65%。
简介:TheCommissionfortheGeologicalMapoftheWorld(CGMW),anIUGSaffiliatedbody,hasjustissuedthefirsteditionoftheStructuralMapoftheIndianOceanwhichwaspresentedduringthe32ndIGC(Florence).Duringthe1980's,theCommissionpublishedtheGeologicalAtlasoftheWorld,whichincludedthemapsofthe5oceansoftheglobe.Twodecadeshaveelapsedandtheknowledgeofthesea-floorexperiencedverysignificantprogress;thereforesome5yearsago,theCommissiondecidedtolaunchanewtypeofoceanmapping.TheStructuralMapoftheIndianOceanisthefirstofthisnewseriesofmaps.
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简介:ThemainpurposetodevelopaMapGraphicWorkstationonthewidelyusedmicro-computeristhatbyitthewholeprocessingofmapdatafromcapturing,managing,editing,updatingtographicoutputtingcanberealized.MapDigitizationSystem(MDS)isthesoftwaresystemtodealwiththeinitialandalsothemostimportantprocessing.Inthispaper,theauthorsintroduceaMDSonamicro-computerbasedMapGrphicWorkstationthathasbeenqualitifiedfortheproducationofdigitalmap.SincethesystemisdesignedtotallyindependentlyandinthegeneralframeoftheMapGraphicWorkstation,thecapturingandman-agingandotherprocessingsformapdataareinanintegralmanner,inwhichtheproducationofdigitalmapcanbefulfilledconveniently.Atthesametime,thesystemisflexibleforfunctionextensionandwidelyapplicabletothedatafromdif-ferentsourcesandwithdifferentinformationcharacterisitcs(e.g.,theprocessingofChinesecharactersonmap).
简介:Ahybridthinningalgorithmforbinarytopographymapsisproposedonthebasisofparallelthinningtemplatesinthispaper.Thealgorithmhasahighprocessingspeedandthestrongabilityofnoiseimmunityandpreservationofconnectivityandskeletonsymmetry.Experimentalresultsshowthatthealgorithmcansolvethethinningproblemofbinarymapseffectively.
简介:KnowledgerepresentationandreasoningisakeyissueoftheKnowledgeGrid.ThispaperproposesaKnowledgeMap(KM)modelforrepresentingandreasoningcausalknowledgeasanoverlayintheKnowledgeGrid.ItextendsFuzzyCognitiveMaps(FCMs)torepresentandreasonnotonlysimplecause-effectrelations,butalsotime-delaycausalrelations,conditionalprobabilisticcausalrelationsandsequentialrelations.ThemathematicalmodelanddynamicbehaviorsofKMarepresented.Experimentsshowthat,undercertainconditions,thedynamicbehaviorsofKMcantranslatebetweendifferentstates.Knowingthiscondition,expertscancontrolormodifytheconstructedKMwhileitsdynamicbehaviorsdonotaccordwiththeirexpectation.SimulationsandapplicationsshowthatKMismorepowerfulandnaturalthanFCMinemulatingrealworld.
简介:TheGeologicalSurveyofNorway,incooperationwiththeGeologicalSurveysof22othercountriesandundertheaegisoftheCommissionfortheGeologicalMapoftheWorld(CGMW),hascompiledageologicalmapofnorthernEuropeatthe1:4millionscale.Forthefirsttimethegeologyofbothlandandseaareasofthislargeregionisdisplayedinasingledocument.Theareacoveredextends