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1.
气体检测器的自动检验系统面世  美国IndustrialScientificCorp(ISC)研制出一种安装在用户使用场所的自动检验系统,检验时将气体检测器接入该系统(最多同时接入5台),自动检验系统将检测到的数据通过因特网或卫星通讯自动地送到ISC远距离监控中心,监控中心根据仪器的型号或序号,调出以前的校正日期、传感器类型、使用时间和电池情况的数据,监控中心软件系统根据测量值的下降程度,自动传送命令到自动检验系统,完成气体检测器的校正、维护和数据记录。化学品燃烧产物数据库当消防队队员救火时,他…  相似文献   

2.
检测废水中有毒污染物的联机监测系统加利福尼亚州Microbics公司,Yarkshire水公司和Siemens环境系统公司协作研制了一种检测废水中有毒污染物的Microtoxos联机监测系统。据Microbics公司的NelsonWinkless称,...  相似文献   

3.
生态系统多样性   总被引:2,自引:0,他引:2  
生态系统多样性联合国环境规划署/全球环境监测系统(UNEP/GEMS)EcosystemDiversity¥Abstract:Tropicalrainforests,grasslands,wetlands,coralreefsandmangroves...  相似文献   

4.
ntroductionArsenic,ametalloid,isanonessentialtraceelement,hasbeenclaimedtobeofclinicalbenefitinthetreatmentofsyphilis,amoebiasisandothertropicaldiseases(Klaassen,1990;Kowaguchi,1981).Besideitsclinicalimportance,arsenicisreportedtobeanimportantwaterpo…  相似文献   

5.
对调节池设计功能的讨论ADiscussiononDesignFunctionofRegulatingPool丁日堂(青岛市李村河污水处理厂266042)在现代工业废水处理系统设计中(这里专指生化系统),为达到经济适用、稳定运行、处理系统出水水质稳定的...  相似文献   

6.
IntroductionRecently,someinstallationswithspecialconstructionforextractingcontaminantgas,suchasanexhausttoweroftheundergroundtunnel,etc.weresetupinurbanandindustrialcomplexareas.Theeffectsoftheseconstructionsontheflowandtherebyonthelocaldispersionoft…  相似文献   

7.
IntroductionThesolid/fluidtwophaseflowsareoftenencounteredinmanyenvironmental,chemicalandhydraulicengineering,suchassedimenttransportationinrivers,wastewaterflowwithsolidparticlesandsoon.Recently,considerableeffortsregardingnumericalpredictionshaveb…  相似文献   

8.
IntroductionTechnologytransfer,orextension(atthelocallevel),istheprocessofmovinginnovationsfromtheirorigintotheirpointofoperation.Innovationsmayincludescientificandtechnicalknowledge,ideas,services,inventionsandproducts.Technologyadoptionistheimpleme…  相似文献   

9.
1 IntroductionElectroplatingsludge,containingCu,Ni,Zn,Cr,Fe,etc.,isharmfulwastematerialproducedbygalvanizationindustry.Thereisstillnoeffectivemethodtorecoverresourceandcontrolpollutionbothathomeandabroad.Themetalsdiscardedbygalvanizationindustryamoun…  相似文献   

10.
New approaches to characterizing urban air particles in central London   总被引:2,自引:0,他引:2  
1 IntroductionOnaninternationalscale,thenatureofurbanairpollutionhaschangedsignificantlyoverthelast50years.Inthe1950sand1960s,themostimportantenvironmentalhealthissuesstemmedfromtheoccurrenceofurbansmogs,anatmosphericcocktailcharacterizedbyhighconcen…  相似文献   

11.
Whenchromiteisrefinedtoproducesilicoferrochromealloy,akindofslagcontainingchromiumisformed,knownasferrochromeslag.Itconsistsofmainlycalciumoxide,siliconbioxideandafewbichromiumtrioxide.Becauseofit○slargeproductionandalsobecauseitcontainsharmfulCr6+w…  相似文献   

12.
1 IncreasingenvironmentalproblemscallfortechnologicalsolutionsWiththerapideconomicgrowthinthepasttwodecades,allthemajorenvironmentalproblemsofworldwideconcernhaveappearedinChinainonewayoranother.Theyaremainlyreflectedinsoilerosion,desertification,bi…  相似文献   

13.
Integrated environmental assessment: an urban perspective   总被引:2,自引:0,他引:2  
1 IntroductionUrbanareasthroughouttheworldareincreasinglyafocusofenvironmentalconcern.Theyareplacesofintenseandgrowingeconomicactivity.Inresponse,urbanpopulationsaregrowingrapidly.Itisestimatedthat,by2000,morethanhalftheworld○spopulationwillliveintow…  相似文献   

14.
IntroductionInrecentyears,moreandmoreevidencesshowthatgreenhousegasesemissionshavebeguntoinfluenceglobalclimate.Greenhouseeffectisoneofthemostrigorouschallengesnowadaysweface.Sincebothcauseandimpactofclimatechangeareglobal,thewholeworldshouldtakeacti…  相似文献   

15.
1IntroductionLandscapeecologyfocusesonstructure,function,andchangesinlandscape(Forman,1986).Heterogeneityinlandscapesisshaped...  相似文献   

16.
IntroductionInmosthigherplantsthesynthesisandaccumulationofbetaineunderstresscondition(saltordrought)hasimportantphysiologicalsignificance(Greenway,1980;Hanson,1978;Storey,1977;Wyn,1977;1978;Hatz,1980).Thereweremanystudiesonthechangeinbetainelevelsin…  相似文献   

17.
objectiveofcouplingshouldbedecidedbecausethefactorsofwaterandlandresourceshavevariedefectsondiferentpurposes,forexample,tobui...  相似文献   

18.
1 Sustainableurbandevelopment—thepublichealthdimensionTownsandcitiesarecurrentlythefocusforeconomicplanninganddevelopmentinEuropeancountries.Formerly,politiciansandplannersprioritizedinternationalandnationallevels,withmacroeconomicdevelopmentseenast…  相似文献   

19.
1 IntroductionUrbansustainabledevelopment,populationandGDPproduction,traffic,andenvironmentareinteractingwitheachother.Productionofpopulationandgoodsraisetheneedforexchangeinspace,leadingtotrafficflow.Thetrafficflow,inreverse,furtherenhancetheproduct…  相似文献   

20.
1IntroductionAerosolsplayanimportantroleinclimatechange,airquality,aciddeposition,visibilityreduction,andcloudproceses.Theyar...  相似文献   

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