排序方式: 共有54条查询结果,搜索用时 15 毫秒
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“低碳经济”正在成为全球经济的潮流和趋势。我国各级政府、各类企业要充分认识“低碳革命”给产业发展带来的一系列重大影响。汽车零部件企业生存发展必须大力发展“低碳经济”,而实现工业低碳化是汽车零部件企业的主要目标之一。我国汽车零部件企业发展“低碳经济”应重点抓好观念创新、战略创新、结构创新、科技创新以及管理创新5个方面。 相似文献
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This paper presents the characterization of air quality monitored at near field region (NFR) and far field region (FFR) of a national highway located at an industrial complex. The pollutants such as PM10, SO2 and NO2 were monitored in two campaigns (11th September to 18th October 2012 and 18th January to 17th February 2013). The 24 h average PM10 concentration at NFR and FFR were found to be 86.69 ± 18.56 μg/m3; 73.16 ± 16.21 μg/m3 and 89.44 ± 18.69 μg/m3; 81.91 ± 16.42 μg/m3, respectively during first and second campaign. In both the campaigns PM10, SO2 and NO2 concentration at NFR was higher than FFR. The chemical characterization of PM10 at NFR and FFR indicated the abundance of major elements such as Na (NFR = 30% and FFR = 32%), Ca (NFR = 12% and FFR = 14%) and ions namely NO3− (NFR = 71% and FFR = 68%) and NH3+ (NFR = 15% and FFR = 19%). Further, at FFR, SO42− and NO3− were found to be 18% and 35% higher than NFR indicating the conversions of SO2 and NO2 concentration into secondary particles. The measured SO2 and NO2 concentrations were 23 and 21% lower at FFR when compared to NFR confirms the secondary formation.The CALPUFF, EPA regulatory model was set up to understand the dynamics of air pollutants at the industrial complex. The predicted PM10, SO2 and NO2 concentrations at NFR and FFR were found to be 32.31 ± 1.56 μg/m3 and 31.35 ± 1.27 μg/m3; 0.37 ± 0.21 μg/m3 and 0.06 ± 0.04 μg/m3; 12.83 ± 6.55 μg/m3 and 4.67 ± 2.77 μg/m3, respectively. The model showed moderate predictions for PM10 (R2 = 0.44–0.52), SO2 (R2 = 0.41–0.51) and NO2 (R2 = 0.45–0.61) concentrations. 相似文献
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基于iFIX平台的电力监控系统的开发 总被引:2,自引:0,他引:2
王承定 《交通部上海船舶运输科学研究所学报》2005,28(1):37-40
简述iFIX工程组态软件的概况、功能,以电站监控系统的设计为背景,介绍iFIX的具体应用及其应用效果。 相似文献
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Carl J. Hamilton Jonas Eliasson 《Transportation Research Part C: Emerging Technologies》2011,19(6):1019-1032
As more European roads become tolled by various means, an increasing share of road users become subject to more than one tolling scheme in their regular driving. This can be especially burdensome for long distance hauliers, who may pass several countries and tolled motorway systems during the course of 1 day. For this reason, a range of projects have been initiated attempting to increase the level of interoperability between tolling systems, many of which with only limited success. By analyzing current incentives, costs and benefits for toll operators and road users, we conclude firstly that the current level of interoperability is likely to be lower than socially optimal, and secondly that a direct regulation making the provision of interoperability mandatory is likely to be in excess of what is socially optimal. We argue that vertically separating the monopolistic toll operators could be a cost-efficient way to achieve a socially optimal level of interoperability as a equilibrium market outcome. 相似文献
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简要介绍天津南港工业区在天津港口开发建设中的重要地位和作用,提出了南港工业区开发建设的整体思路和建议。 相似文献
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介绍了工业以太网技术在半实物模拟船舶电站系统的成功应用,由3 kW变频器驱动交流异步电动机+同步发电机组,分别1#模拟主发电机、2#模拟主发电机和应急发电机。控制器选用S7-1200系列PLC,基于Profinet-西门子的工业以太网构建现场总线控制系统( Fieldbus Control System,FCS),具有“分散控制、集中管理”的优点。 相似文献
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地铁信号系统工厂化施工研究 总被引:1,自引:0,他引:1
通过对轨道交通建设特点、地铁信号系统发展的分析,为提高地铁信号系统的安全性、可用性和可靠性,提出信号系统室内工程采用工厂化施工。 相似文献