检索结果-南通市图书馆

Analysis of Sources of Atmospheric Fine Particulates in Nan'ao County

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Meteorological and Environmental Research 2015年第11期6卷 26-30,34页

作者： Xiao Lianghong Zhang Yufeng chen shuchi Xie Yuanshu Guo Yan Shantou Environment Protection Monitoring Station Guangzhou Hexin Analytical Instrument Limited Company

Based on on-line single particle aerosol mass spectrometry （SPAMS） with high time resolution, the sources of atmospheric fine particu- late matter in Nan＇ao County were analyzed. The results showed that during the monitoring period from March 24 to 27 in 2015, the primary source of fine particulate matter in Nao＇ao County was motor vehicle exhaust, that is, 24.7% of fine particulates were from motor vehicle exhaust, followed by biomass burning （17.2%）, fire coal （17.2%）, and sea salt （13.3%）. The proportions of fire coal and sea salt revealed the peculiarity of sources of atmospheric fine particulate matter in Nan＇ao County. Therefore, it is suggested that some measures should be adopted to limit tourist traffic to reduce the adverse impact of motor vehicle exhaust on ambient air quality in Nan＇ao County.

关键词： Nan'ao County Atmosphere Fine particulate matter Analysis of sources China

Analysis and Control of Air Pollution from Bus Exhaust in Shantou City

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Meteorological and Environmental Research 2015年第8期6卷 30-32页

作者： Guo Yan Xiao Lianghong Huang Yuxin chen Yingyi Zhan Meijun Huang Wenxin chen shuchi chen Yuan Wang Shaoming Shantou Environmental Monitoring Station Shantou Jia'nan Environmental Protection and biological technology Co. Ltd. Shantou Motor Vehicle Administration Center

Air pollution from bus exhaust （one of main sources of urban haze） in Shantou City, Guangdong Province was surveyed, and the purification effect of a new device for removing soot particulates from bus exhaust was analyzed. The results show that the smoke intensity of all buses surveyed averages 3.59 m-1, exceeding the limit, and the maximum is 5.7 times higher than the limit. Among the buses inspected, the smoke intensity of 37% of buses is not up to standard. The removal rate of soot particulates from various buses equipped with the purification devJce averages 63.6%, and some buses are up to standard after their exhaust are purified, showing that the device has good purification effect. Therefore, installing the purification device in a bus is an effective way to control air pollution from bus exhaust and haze in a city.

关键词： Bus Exhaust Pollution Control China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

美国航天发射场安全评估与仿真技术应用

载人航天 2009年第3期15卷 34-39页

作者：史荟燕陈书驰北京航天飞行控制中心

介绍一个为NASA开发的美国航天发射场安全评估决策支持环境,利用仿真技术建立虚拟发射场,对影响发射场安全的因子进行模拟研究,为发射场安全管理人员认识各种因素对安全的影响程度以及采取相应安全措施提供决策依据。同时,结合我国新发... 详细信息

介绍一个为NASA开发的美国航天发射场安全评估决策支持环境,利用仿真技术建立虚拟发射场,对影响发射场安全的因子进行模拟研究,为发射场安全管理人员认识各种因素对安全的影响程度以及采取相应安全措施提供决策依据。同时,结合我国新发射场建设实际,为新一代运载火箭发射场安全评估工作提供借鉴。

关键词：航天发射发射场安全评估仿真

在线全文

学校读者我要写书评

暂无评论

气象探空火箭气温测量不确定度评估方法

国防科技大学学报 2021年第6期43卷 49-59页

作者：孙宇陈书驰万黎金波盛峥王鑫北京航天飞行控制中心北京100094 中国人民解放军32021部队北京100094 上海长望气象科技股份有限公司上海201209 国防科技大学气象海洋学院湖南长沙410073

在气象火箭测温修正模型基础上,通过误差分析理论,对温度修正及其不确定度评估方法进行研究。根据火箭探空仪在空中下落过程中大气密度变化规律,建立温度修正数学模型,推导得到温度修正公式。根据误差理论,分析影响温度修正的八项误差因... 详细信息

在气象火箭测温修正模型基础上,通过误差分析理论,对温度修正及其不确定度评估方法进行研究。根据火箭探空仪在空中下落过程中大气密度变化规律,建立温度修正数学模型,推导得到温度修正公式。根据误差理论,分析影响温度修正的八项误差因素,并逐项给出温度修正误差表达式。以气象火箭实测数据为例,运用上述公式,对探空火箭温度反演不确定度进行分析计算。结果表明:温度反演不确定度在50~60 km较大,最大为3.6 K;40~50 km不确定度为0.3~0.9 K;40 km以下,不大于0.3 K。影响温度不确定度的因素主要是气动加热修正项、滞后效应修正项、结构热传导修正项和传感器对环境热辐射修正项。数据处理时采用参考大气或标准大气仅进行一次修正是不够的,需进行迭代修正,单次修正结果与迭代修正结果差异最大可达5.6 K。

关键词：气象探空火箭气温测量数据处理不确定度评估

在线全文

学校读者我要写书评

暂无评论

美国航天飞机返回气象保障模式研究

载人航天 2009年第3期15卷 54-58页

作者：陈书驰张向荣何武贵北京航天飞行控制中心总装司令部

讨论美国航天飞机返回气象保障模式,包括:气象保障机构及分工、返回着陆模式、飞行气象准则,以及发射前、在轨段、再入(着陆)段的返回气象保障实施方法等,为我国未来载人航天工程气象保障的发展和完善提供参考。

关键词：航天飞机返回着陆气象保障飞行气象准则

Comparison on Determination Results of Methane and Total Hydrocarbons by Glass Syringe Method and Air Bag Method

在线全文

学校读者我要写书评

暂无评论

Meteorological and Environmental Research 2019年第4期10卷 106-109页

作者： chen Miao Huang Yiyao Guo Yan chen shuchi Shantou Environmental Protection Monitoring Station

Samples at different setting time were determined by glass syringe method and air bag method, and their results were analyzed. The results showed that concentrations of methane and total hydrocarbons obviously declined with the prolonging of setting time by glass syringe method, and recovery rate of sample declined to 60% after 8 h. In air bag method, analysis results of methane and total hydrocarbons were stabler, and recovery rate of sample was 93% after 8 h.

关键词： Syringe Air bag Methane Total hydrocarbons

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

电子废物拆解区大气细颗粒物源解析及应用

环境科学与技术 2018年第3期41卷 88-93,162页

作者：郭岩张宇烽肖亮洪姜国陈舒迟卓春锦汕头市环境保护监测站广东汕头515041 广州禾信仪器股份有限公司广东广州510530

首次采用高时间分辨率在线单颗粒气溶胶质谱技术(SPAMS)对电子废弃物拆解典型区域广东贵屿的大气细颗粒物进行了来源解析,填补了国内此类研究空白。结果表明:(1)污染较严重的冬春季期间细颗粒物首要污染源是工业工艺源,占26.1%,显著高... 详细信息

首次采用高时间分辨率在线单颗粒气溶胶质谱技术(SPAMS)对电子废弃物拆解典型区域广东贵屿的大气细颗粒物进行了来源解析,填补了国内此类研究空白。结果表明:(1)污染较严重的冬春季期间细颗粒物首要污染源是工业工艺源,占26.1%,显著高于同期其他区域的平均占比11.1%,污染程度较轻的夏秋季期间首要源是机动车尾气源,占20.5%,工业工艺源退居第三,比冬春季低8.1%;(2)颗粒物成分中高比例溴离子、磷酸盐及捕获的含溴高分子有机碎片等代表了电子废弃物拆解作业典型区域大气细颗粒物环境特征,反映了细颗粒物来源与电子废弃物产业之间的内在关联性;(3)建议严格实行电子废弃物拆解集中规范化运营和配套更有效的环保处理设施等措施以减少电子废物拆解行业废气对贵屿大气环境质量的负面影响。

关键词：电子废弃物大气细颗粒物源解析

Research Progress on the Monitoring of Precursor of Atmospheric Ozone——Volatile Organic Compounds

在线全文

学校读者我要写书评

暂无评论

Meteorological and Environmental Research 2020年第2期11卷 29-36页

作者： shuchi chen Yiyao HUANG Miao chen Juan LI Lianghong XIAO Yan GUO Shantou Environmental Protection Monitoring Station Shantou 515041China

Volatile organic compounds(VOCs)are important precursors of ozone and PM_(2.5).At present,VOCs have gradually become the focus of air pollution control after fine particles in China,and a series of documents,standards and planning on VOCs were issued from the state to each *** analysis on source apportionment and control of VOCs have also become a hot spot in atmospheric environmental protection research of China at present *** research work on VOCs in ambient air is the basis and premise of scientific and effective prevention and control of VOCs *** this paper,research progress on the monitoring of VOCs is introduced systemically,and main monitoring and evaluation methods of atmospheric VOCs are explored from monitoring analysis method,chemical reaction activity and health risk ***,concentration characteristics and source apportionment of VOCs in the regions at home and abroad that have carried out VOCs research work are compared and *** research could provide reference for source apportionment of VOCs in other cities of China.

关键词： Volatile organic compounds(VOCs) Ozone Chemical composition Source analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

美国载人航天高空探测系统先进性研究

载人航天 2010年第4期16卷 58-62页

作者：张向荣陈书驰何亿强邵胜利北京航天飞行控制中心

介绍美国肯尼迪航天中心高空探测系统的发展过程和现用的高空探测系统,总结美国航天高空探测系统的发展特点及先进性,为我国载人航天工程高空探测系统的发展,提供值得借鉴的经验。

关键词：美国航天高空气象探测先进性