简介:TheeffectsonhepaticEROD(7-ethoxyresorufinO-deethylase)inMugilso-iuyexposedtobenzo(a)pyrene(BaP),pyreneandtheirmixturesofequalconcentrationwereinvestigated,atconcentrationsof0.1,1.0,5.0,10.0,50.0μg/dm3,inexperimentalcondition.Time-effectsanddoseresponseofthebiochemicalindexswereobserved.TheresultsshowedthatthehepaticERODactivitieswereinducedbytheexposureofBaP,pyreneandtheirmixturesathighconcentration.Dose-responseconnectionswerethatthehepaticERODactivitieswereelevatedwithincreasingconcentrationofthepollutants.ThecombinedeffectofBaPandpyreneat1:1concentrationratioonhepaticERODactivitywasantagonism.
简介:直接选择桌面组合,免去搭配和多个设备连接的麻烦。而很多Hi-Fi音响厂商都有推出这一类集解码播放喇叭于一身的组合音响,它们有些只包含一台单独的设备。
简介:设计理念《小种子》讲述的是一粒种子的故事秋天和许多种子一起掉落到地面。冬天,埋藏在地底冬眠。来年春天,苏醒发芽,茁壮生长。夏天,花蕾开放。秋天,新的种子成熟落地,等待着生命的歌谣再次循环往复。绘本中明快的语言搭配简洁的配图,给孩子们提供了多元想象的空间,从学生的兴趣出发,找准切入口,每幅图都有很多的话说;从学生的表达出发,引导学生将绘本中的图文与生活经验
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简介:Inthispaper,weconstructamodelinwhichtheimpactofpollutiononhealthisexertedthroughbothdirectandindirectchannels.Theindirectchanneliscapturedbyaproductionfunc-tioninwhichtheprincipalhealth-improvingfactor,incomegrowth,canberealizedonlyinthecostofpollutionincrease.Thismodelisthentestedbytheaggregatedchroniclediseasedatainover78Chinesecounties.Ourresultsshow,afterattainingthethresholdof8μg/m2,continuousincreaseinindustrialSO2emissiondensitywillleadtheratioofpopulationsufferingchroniclediseases,amongwhichrespiratorydiseasesoccupyasignificantproportion,torise.However,owingtotechnologicalprogressinpollutioncontrolactivities,theneededSO2emissiontoproduceoneunitofGDPdiminisheswithtime.Therefore,thenegativeeffectfrompollutionaugmentationonpublichealthseemstoberecompensedmoreandmorebythepositiveeffectofeconomicgrowth.
简介:南岳衡山是中国重要的旅游基地,旅游事业的蓬勃发展,迫切需要为景点宣传、游客服务和景区管理提供信息化的应用服务手段.探讨基于SO(SuperObjects)的衡山旅游管理信息系统的设计与开发,对系统的软硬件平台、总体设计、系统功能和技术特点等进行详细说明,利用VB、SO、R2V和Access等技术,实现了衡山旅游信息的可视化查询、三维浏览和空间分析,利用Flash制作和MP3真人录音实现了衡山旅游信息的音频、视频等多媒体信息播放,为游客提供方便快捷的信息查询和切合自身的旅游设计方案,为衡山管理部门提供良好的信息管理模式和对外宣传方式.