نتایج جستجو برای: nitrogen oxides nox

تعداد نتایج: 144148  

2007
Lesley E. Ott Kenneth E. Pickering Georgiy L. Stenchikov Heidi Huntrieser Ulrich Schumann

[1] The 21 July 1998 thunderstorm observed during the European Lightning Nitrogen Oxides Project (EULINOX) project was simulated using the three-dimensional Goddard Cumulus Ensemble (GCE) model. The simulation successfully reproduced a number of observed storm features including the splitting of the original cell into a southern cell which developed supercell characteristics and a northern cell...

Journal: :Atmospheric Chemistry and Physics 2021

Abstract. Chai et al. (2021) recently published measurements of wildfire-derived (WF) oxides nitrogen (NOx) and nitrous acid (HONO) their isotopic composition. The method used to sample NOx, collection in alkaline solution, has a known 1:1 interference from another reactive compound, acetyl peroxynitrate (PAN). Although PAN is thermally unstable, subsequent reactions with dioxide (NO2) effect e...

2012
Michelle Wilhelm Jo Kay Ghosh Jason Su Myles Cockburn Michael Jerrett Beate Ritz

BACKGROUND Numerous studies have linked criteria air pollutants with adverse birth outcomes, but there is less information on the importance of specific emission sources, such as traffic, and air toxics. OBJECTIVES We used three exposure data sources to examine odds of term low birth weight (LBW) in Los Angeles, California, women when exposed to high levels of traffic-related air pollutants d...

2017
O Sang Kwon Seong Jin Cho Kwang-Ho Choi Sun Hee Yeon Suk-Yun Kang Jae-hyo Kim Seong-Hun Ahn Yeonhee Ryu

BACKGROUND Moxibustion therapy has been used historically for thousands of years and there are many clinical trials supporting its efficacy and effectiveness for various conditions. Moxa smoke has been a major reason for avoiding moxibustion due to its smell and potential risks to the human body. METHODS 10 units of commercial indirect moxa (CIM) from six manufacturers (A-F) were burnt in a 2...

In this study, the effects of hydrogen and hydroxygen additions and oxygen enrichment on the emission characteristics of a gasoline engine (EF7) were investigated and compared with each other. The simulation was launched by GT-Power at different engine speeds with 5 % to 15 % volume fractions for both of oxygen and hydrogen enrichment and 4.5 % to 9 % volume fractions of hydroxygen addition in ...

2003
M. Wenig

We describe the first satellite observation of intercontinental transport of nitrogen oxides emitted by power plants, verified by simulations with a particle tracer model. The analysis of such episodes shows that anthropogenic NOx plumes may influence the atmospheric chemistry thousands of kilometers away from its origin, as well as the ocean they traverse due to nitrogen fertilization. This ki...

2016
Benjamin de Foy Zifeng Lu David G. Streets

China's twelfth Five-Year Plan included pollution control measures with a goal of reducing national emissions of nitrogen oxides (NOx) by 10% by 2015 compared with 2010. Multiple linear regression analysis was used on 11-year time series of all nitrogen dioxide (NO2) pixels from the Ozone Monitoring Instrument (OMI) over 18 NO2 hotspots in China. The regression analysis accounted for variations...

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