English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

地球環境研究論文集 第20巻微小粒子状物質(PM2.5)による健康影響が懸念されているが, 中国では, 主に農村部における石炭やバイオマスなどの固形燃料を室内で使用することによる室内曝露とともに, 急増する自動車交通起源のPM2.5による屋外および室内曝露のそれぞれが深刻な問題となっている. 本研究は, 中国の31の省・直轄市を対象として, 室内での燃料種・用途別のエネルギー使用量データからPM2.5発生量を推計するとともに, 地域別の交通量推計および簡易沿道拡散モデルによって, 道路交通起源のPM2.5濃度を推計し, これに年齢等の個人属性別の生活時間利用データを用いた微環境曝露モデルを適用して, 全曝露濃度に占める各発生源からの寄与を推計した. その結果, 都市では道路起源の寄与が大きく, 農村では室内起源の寄与が大きい結果となり, また年齢・性別による違いも大きいことが分かった.Health effect from particulate matter, especially PM2.5 is the one of most critical issues in the world. In China, indoor use of solid fuel, such as coal and biomass, causes severe indoor exposure of PM2.5. In addition, with rapid increase of automobile use, road transportation becomes a major source for outdoor exposure of PM2.5 and also degrades the indoor air quality near the highway. In this study, indoor emission of PM2.5 was estimated based on domestic energy consumption statistics. Also the PM2.5 emissions from road traffic were estimated from traffic statistics and downscaling method to road segments. Then the concentration related to road transport was estimated by simplified roadside diffusion model. Finally, the micro-environmental exposure model was adapted to Chinese 31 provinces for age and attribution groups. As the results, the contribution from road transport was higher in urban area, while the contribution from indoor emission source was higher in rural area, with significant differences among sex and age groups

Estimation of Human Exposure of PM2.5 by Indoor Source and Road Traffic in China