搜索结果: 76-90 共查到“知识库 环境科学技术 PM2.5”相关记录103条 . 查询时间(0.161 秒)
Sources Affecting PM2.5 Concentrations at a Rural Semi-Arid Coastal Site in South Texas
Positive Matrix Factorization (PMF2) Principal Component Analysis/Absolute Principal Component Scores (PCA/APCS) Coastal Industrialized Urban
2013/3/8
Principal component analysis/absolute principal component scores (PCA/APCS) and positive matrix factorization (PMF2), an advanced factor analysis technique were employed to apportion the sources influ...
A Tool for Public PM2.5-Concentration Advisory Based on Mobile Measurements
WRF CMAQ PM2.5 Air Quality Interpolation Arctic
2013/3/12
A tool was developed that interpolates mobile measurements of PM2.5-concentrations into unmonitored areas of the Fairbanksnonattainment area for public air-quality advisory. The tool uses simulations ...
为了研究珠三角地区细粒子气溶胶的环境效应,使用粤港地区长期气象资料和珠三角大气成分站网高分辨率资料,结合卫星遥感AOD结果,分析了珠三角地区由于细粒子(PM2.5)污染导致能见度下降与形成灰霾天气的长期变化趋势.结果表明,近年来珠江三角洲地区的气溶胶污染日趋严重,气溶胶云一年四季都可以出现,且长期稳定存在,重污染区位于珠江口以西的珠江三角洲西侧.灰霾天气主要出现在10月至次年4月.灰霾导致能见度恶...
Source Apportionment of PM2.5 in a Subarctic Airshed - Fairbanks, Alaska
Chemical Mass Balance Woodstoves Source apportionment Biomass smoke, PM2.5
2016/3/25
Fairbanks, Alaska has some of the highest measured ambient PM2.5 concentrations in the United States, with wintertime
levels often exceeding the 24-hour PM2.5 National Ambient Air Quality Standard (N...
Source Characterization and Apportionment of PM10, PM2.5 and PM0.1 by Using Positive Matrix Factorization
ositive matrix factorization Enrichment factor analysis Conditional probability function analysis
2016/3/25
Ambient Particulate Matters (PM10, PM2.5 and PM0.1) were investigated at Shinjung station in New Taipei City, Taiwan.
Samples were collected simultaneously using a dichotomous sampler (Andersen Model...
Traffic Air Pollution and Risk of Death from Breast Cancer in Taiwan: Fine Particulate Matter (PM2.5) as a Proxy Marker
Traffic air pollution Breast cancer Fine particulate matter
2016/3/28
The relationship between breast cancer mortality and air pollution was examined using an ecological design. The study
areas consisted of 61 municipalities in Taiwan. Air quality data for recorded con...
Water-soluble Ions in PM2.5 on the Qianhu Campus of Nanchang University, Nanchang City: Indoor-Outdoor Distribution and Source Implications
Indoor air Aerosols Water-soluble ions Nanchang
2016/3/25
Ambient PM2.5 was sampled in three indoor environments (a common office, a photocopy room and a student dormitory)
and one outdoor environment (a rooftop) on a campus of Nanchang University in Nancha...
西安市冬、夏两季PM2.5中碳气溶胶的污染特征分析
PM2.5 有机碳(OC) 无机碳(EC) 西安
2013/4/16
为研究西安市冬、夏两季大气颗粒物PM2.5中碳组分的污染变化规律,利用TEOM系列RP1400a采样仪于2010年冬季和夏季进行采样,测定了样品中的有机碳(OC)、无机碳(EC)和水溶性有机碳(WSOA)的含量。结果显示,PM2.5中OC和EC的季节平均浓度值冬季较高,分别是夏季的2.62,1.75倍,这表明西安市冬季碳气溶胶污染严重。OC和EC日变化在不同季节均呈现双峰分布特征,这主要是由交通源...
Potential Source Analysis for PM10 and PM2.5 in Autumn in a Northern City in China
Sources Potential source contribution function PM10 PM2.5
2016/3/28
In this study, PM10 and PM2.5 samples were obtained in a northern city in China. The 12-h averaged concentrations of
particulate matter and species were analyzed. A PCA-MLR model was applied to ident...
Water Soluble Ions in PM2.5 and PM1 Aerosols in Durg City, Chhattisgarh, India
PM2.5 PM1 Water soluble ions Seasonal variation Principal component analysis
2016/3/28
This paper reports the atmospheric concentrations of PM2.5 and PM1 mass, water soluble inorganic components and their
seasonal variations measured between the period of July 2009 and June 2010 in Dur...
Exposure to PM10, PM2.5, PM1 and Carbon Monoxide on Roads in Lahore, Pakistan
Pakistan Particulate matter Carbon monoxide Exposure Air pollution
2016/3/28
Particulate matter pollution is one of the major environmental concerns in Pakistan. Over the past 20 years there has
been a considerable increase in the number of motor vehicles. The present study w...
Physicochemical Properties of PM2.5 and PM2.5–10 at Inland and Offshore Sites over Southeastern Coastal Region of Taiwan Strait
Coastal region Particulate matter Sampling and analysis Physicochemical properties Backward trajectory
2016/3/28
This study investigates the effects of sea-land breezes (SLBs) and northeastern monsoon (NEM) on the physicochemical
properties of particulate matter (PM) in the atmosphere over southeastern coastal ...
锌金属硫蛋白对PM2.5暴露的运动大鼠血清抗氧化酶及免疫指标的影响
锌-金属硫蛋白 细颗粒物 递增负荷 免疫
2013/11/11
为了探讨锌-金属硫蛋白(Zn-Metallothionein,Zn-MT)对细颗粒污染运动大鼠血清抗氧化酶及免疫指标的影响.选取雄性SD大鼠56只,随机分为安静对照组、运动对照组、Zn-MT+运动组、低剂量PM2.5+运动组、Zn-MT+低剂量PM2.5+运动组、高剂量PM2.5+运动组、Zn-MT+高剂量PM2.5+运动组,采用递增负荷跑台训练后即刻处死,取血测定大鼠血清CAT、T-SOD、GS...
Indoor PM2.5 Characteristics and CO Concentration Related to Water-Based and Oil-Based Cooking Emissions Using a Gas Stove
Indoor air pollution Fine particles Size distribution Temporal variation
2016/3/28
Pollutant emissions from indoor cooking activities using clean fuels such as natural gas or LPG are strongly influenced
by cooking ingredients and cooking methods. In this study, we explore the chara...