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711.
In light of the practical need for research to inform policy in Beijing,this study evaluates the economic cost of the impact of PM10 pollution in Beijing from 2001 to 2006,taking health as the main impact,and mortality as the main outcome.Based on the literature review,this study adopts relatively conservative parameters as the basis for calculating the health impacts.It concludes that nearly 30% of mortality among registered residents above age 30 in Beijing can be attributed to PM10 pollution,and that the economic cost equals 0.8%-1.2% of the city's GDP over the same period.This is lower than the results of previous studies,but still high enough to warrant a commitment to solve the city's air pollution problem. 相似文献
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以20台沸腾炉(功率小于等于60 MW)的燃料特性分析数据和大气污染物的排放实测数据为基础,利用统计分析方法,研究了燃烧过程中排放的颗粒物(PM)、SO_2和NO_x初始排放浓度的影响因素,分析了沸腾炉PM、SO_2和NO_x排放现状,探讨了我国中小型沸腾炉PM、SO_2和NO_x排放管理控制的潜力和可行性.实验结果表明:在锅炉运行负荷大于等于80%的条件下,中小型沸腾炉PM的初始排放浓度基本上不受锅炉出力、过量空气系数和燃煤灰分含量的影响;燃煤的硫含量越高,SO_2初始排放浓度越高;过量空气系数越大,燃煤挥发分越低,NO_x初始排放浓度越高. 相似文献
714.
West Nile virus (Flaviviridae: Flavivirus) is a serious infectious disease that recently spread across the North America continent. A spatial analysis tool was developed
on the ArcMap 9.x platform to estimate potential West Nile virus activity using a spatially explicit degree-day model. The
model identifies when the virus Extrinsic Incubation Period (EIP) is completed within the vector longevity during mid-summer
months. The EIP is treated as a threshold indicator of the potential for virus emergence and activity. Comparing the number
of West Nile virus cases in Wyoming reported from 2003 to 2005 with model results, actual cases and predicted events of West
Nile virus activity match relatively well. The model represents a useful method for estimating potential West Nile virus activity
in a large spatial scale. 相似文献
715.
Yi Zhang Lin Wu Chao Zou Boyu Jing Xiaoyu Li Tim Barlow Turpin Kevin Michel André Yao Liu Peipei Ren Gongdong Wang Hongjun Mao 《Environmental Modeling and Assessment》2017,22(5):445-458
This paper reports on the development and application of an urban high temporal-spatial resolution vehicle emission inventory model and decision support system based on the current situation in China and actual vehicle emission control requirements. The system incorporates a user-friendly modular architecture that integrates a vehicle emission model and a decision support platform and includes scenario analysis and visualisation capabilities. A bottom-up approach based on localised emission factors and actual on-road driving condition has been adopted to develop the system. As a case study of application and evaluation, an emission reduction effect analysis of the supposed low-emission zone (LEZ) policy in Beijing (2012) was conducted. According to the simulated results in the forms of tables, histograms and grid maps, the establishment of this LEZ had a definite effect on the emission reduction of various types of air pollutants, especially carbon monoxide and hydrocarbon. In the system, the simulation methodology for identifying environmental benefits brought by the LEZ policy could be used to assess other similar environmental policies. Through flexible modification of configuration values or input data variables, the efficacy of separate or joint policies could be quantifiably evaluated and graphically displayed. 相似文献
716.
实验教学是高职教育中不可缺少的环节,多媒体课件的制作与演示性实验教学作为重要的教学方法可以应用于高职食品工艺学的辅助教学.本文介绍了食品工艺实验室设计及教学方法的要求和特点,为使食品工艺实验室实现可持续发展,该实验教学必须与其他学科结合,实验项目必须反映加工新技术,培养学生自发动手动脑能力. 相似文献
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719.
国外应急管理体系的发展现状及经验启示 总被引:3,自引:0,他引:3
叙述了应急管理的基本概念,分析了国外应急管理体系的发展现状。从19个方面完整描述了值得我国借鉴的国外应急管理体系建设经验及启示。最后得出,应从长计议,奋力开拓,全面开创我国政府应急管理体系的新局面,加快我国应急管理体系的建设。 相似文献
720.