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2871.空气质量的技术支持文件模型:提出的3级排放标准,2013三月
[水利、环境和公共设施管理业] [2014-08-05]
关键词:空气污染;空气质量;技术支持文件模型
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2872.空军移动源的空气排放指南:为美国空军基地机动来源的大气污染物排放量的估计方法
[水利、环境和公共设施管理业] [2014-08-05]
Provides a uniform approach to calculating air pollutant emissions for the most common mobile sources found at Air Force installations. This guide is the Air Force's single authoritative resource for mobile source emission estimating algorithms and emission factors.
关键词:空气污染;空军移动源;空气排放指南
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2873.空气质量的技术支持文档建模排放清单:提出的3级排放标准
[水利、环境和公共设施管理业] [2014-08-05]
This Technical Support Document (TSD) describes the development of the emissions inventories used as inputs to the air quality modeling that the U.S. Environmental Protection Agency (EPA) performed to assess the impact of the proposed Tier 3 vehicle and fuel emission standards for cars and trucks. This document provides the details of emissions modeling done to support the development of the Regulatory Impact Assessment (RIA) for the Tier 3 Notice of Proposed Rulemaking (NPRM), hereafter referred to as the Tier 3 NPRM. The emissions inventories were generated using the Sparse Matrix Operator Kernel Emissions (SMOKE) modeling system version 2.7 and processed into the form required by the Community Multi-scale Air Quality (CMAQ) model. CMAQ simulates the numerous physical and chemical processes involved in the formation, transport, and destruction of ozone, particulate matter and air toxics.
关键词:空气污染;空气质量;技术支持文档建模;3级排放标准
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2874.空气质量2013,2卷。运输研究记录:美国交通研究委员会杂志,2341号
[水利、环境和公共设施管理业] [2014-08-05]
This document contains 9 papers that study algorithmic development and preliminary testing of an ecodrive application; comparative analysis of car-following models for emissions estimations; comparisons of locomotive emissions during dynamometer versus rail yard engine load tests; the ratio of in-vehicle to near-vehicle exposure concentrations of airborne fine particles; and, emission benefits of commercial vehicle lane management strategies. This issue also studies environmentally conscious highway design for vertical grades; a fuel consumption prediction model for buses; discretionary passenger vehicle idling behaviors by season and trip stage; and, a statistical study of variables associated with particulate matter exposure levels at bus shelters.
关键词:空气污染;空气质量;运输研究
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2875.马拉硫磷在活性污泥法处理城市污水系统的命运
[电力、热力、燃气及水生产和供应业,水利、环境和公共设施管理业] [2014-08-04]
Organophosphate compounds are used as pesticides and in chemical warfareagents such as nerve agents. VX ((O-ethyl S- 2-(diisopropylamino)ethyl) methylphosphonothioate) is one of the most toxic and environmentally persistent of these nerve agents. This research examined the fate of malathion, a pesticide and surrogate of VX O-ethyl S- 2-(diisopropylamino) (ethyl)(methylphosphonothioate), in bench-scale activated sludge (AS) sequencing batch reactors. Sorption kinetics and sorption equilibrium isotherm experiments indicate that sorption to AS biomass was not a statistically important removal mechanism. However, approximately 90of the initial 4.25 mg L-1 malathion concentration degraded primarily via heterotrophic activity.
关键词:活性污泥法;生物降解;马拉硫磷;有机磷;生物质能
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2876.I-70直溪附近土壤资源对森林植被可持续性作用的评价
[水利、环境和公共设施管理业,电力、热力、燃气及水生产和供应业] [2014-08-04]
Revegetation of high elevation decomposed granite cut-slopes often requires repeated applications of soil amendments to attain sustained vegetative cover. Plant transects from slopes west of the Eisenhower Tunnel from 2007 to 2012 showed that cover was generally stable during this period. Soil fertility tests indicated that nutrients are generally low but still comparable to disturbed-but-revegetated reference plots. Soil organic matter and slow-release forms of nitrogen (N) may be a potential limiting factor. The N release rates of several common CDOT soil amendments were evaluated in a multi-year, field incubation experiment. Test results indicate a wide range of N release availability from nearly immediate to fairly slow release rates. Of the slow-release materials, about 74of total N content was released the first growing season, another 7in the following two years, while about 19was still retained in a more stable organic matter form at the end of the experiment. The study suggests that after several applications of slow-release amendments, vegetative cover on these cut-slopes is stabilizing. Implementation - Slopes that show signs of vegetation thinning should be re-amended promptly with modest amounts of slowly available N. Established stands or sites with more moderate growth conditions may be able to take up much of the available N from larger applications of these slow-release amendments. But on newly seeded sites in high elevation conditions with slow growth potential, the plants may not be large enough to capture N as it is released. An amendment with high carbon such as wood chips or shreds may immobilize excess N by incorporating it into microbial biomass as the mulch degrades. This mulch layer would also help retain organic duff to rebuild the soil. Combinations of existing organic amendments may provide slower, more long-lasting N release. Development of a soil test to specifically measure slowly releasing organic N would improve monitoring and management of erosive slopes.
关键词:公路;侵蚀控制;排水;植被;生物质能
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2877.红杉和国王峡谷国家公园的自然资源条件评价
[水利、环境和公共设施管理业] [2014-07-30]
Climate is a master controller of the structure, composition, and function of biotic communities, affecting them both directly, through physiological effects, and indirectly, by mediating biotic interactions and by influencing disturbance regimes. Sequoia and Kings Canyon National Parks (SEKIs) dramatic elevational changes in biotic communities -- from warm mediterranean to cold alpine -- are but one manifestation of climates overarching importance in shaping SEKIs landscape.
关键词:控制器;红杉和国王峡谷国家公园;自然资源条件评价
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2878.新兴产业周刊——2014年第27期
[汽车制造业,综合,水利、环境和公共设施管理业,信息传输、软件和信息技术服务业,专用设备制造业,通用设备制造业,计算机、通信和其他电子设备制造业,医药制造业] [2014-07-24]
本刊以七大战略性新兴产业——节能环保、新一代信息技术、生物、高端装备制造、新能源、新材料、新能源汽车为研究重点,关注国家高层和各部委的动态,剖析国家和地方的新兴产业政策。本刊设有政策导读、领导讲话、七大战略性新兴产业本周国内外行业动态和重点企业新闻、投资专题四大板块,能够实时监测新兴产业和重点企业动态,把握新兴产业发展方向,研究发展重点,寻求发展机遇。
关键词:节能环保;新一代信息技术;生物;高端装备制造;新能源;新材料;新能源汽车
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2879.新兴产业周刊——2014年第26期
[通用设备制造业,计算机、通信和其他电子设备制造业,综合,医药制造业,专用设备制造业,水利、环境和公共设施管理业,汽车制造业,信息传输、软件和信息技术服务业] [2014-07-22]
本刊以七大战略性新兴产业——节能环保、新一代信息技术、生物、高端装备制造、新能源、新材料、新能源汽车为研究重点,关注国家高层和各部委的动态,剖析国家和地方的新兴产业政策。本刊设有政策导读、领导讲话、七大战略性新兴产业本周国内外行业动态和重点企业新闻、投资专题四大板块,能够实时监测新兴产业和重点企业动态,把握新兴产业发展方向,研究发展重点,寻求发展机遇。
关键词:节能环保;新一代信息技术;生物;高端装备制造;新能源;新材料;新能源汽车
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2880.基于层次分析法污水传输线的模糊综合评价方法
[水利、环境和公共设施管理业] [2014-07-18]
Transmission line flashing will cause large area and long time of blackouts,it happens in the working voltage,and it poses serious threat to the electric power system.With the development of industry,the increase of power grid capacity and rated voltage level,there are more and more flashing accidents occurred in the power system of power transmission and transformation equipment external insulation,also the damage that they bring about to our economy is getting larger.Aiming at a series of problems caused by transmission line flashing,this paper comes up with an assessment method of transmission line flashing,it improves the forecast accuracy and efficiency so as to ensure the safety operation of transmission.
关键词:层次分析法;输电线路;污水;模糊综合评价方法