نتایج جستجو برای: nitrogen oxides

تعداد نتایج: 136750  

2012
Arnaud Chevalier Eleftherios Giovanis

This study explores the relationship between happiness and air pollution in Britain using data from the British Household Panel Survey (BHPS). The effects of air pollution on individuals’ happiness are estimated and their monetary value is calculated. In particular, three air pollutants are examined in this paper; the sulphur dioxide (SO2), the ground-level ozone (O3) and the nitrogen dioxides ...

2007
U. Schumann

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract The knowledge of the lightning-induced nitrogen oxides (LNO x) source is important for understanding and predicting the nitrogen oxides and ozone distributions in the tro-posphere and their trends, the o...

Journal: :Circulation 2012
Patricia F Coogan Laura F White Michael Jerrett Robert D Brook Jason G Su Edmund Seto Richard Burnett Julie R Palmer Lynn Rosenberg

BACKGROUND Evidence suggests that longer-term exposure to air pollutants over years confers higher risks of cardiovascular morbidity and mortality than shorter-term exposure. One explanation is that the cumulative adverse effects that develop over longer durations lead to the genesis of chronic disease. Preliminary epidemiological and clinical evidence suggests that air pollution may contribute...

2003
H Kanazawa S Shiraishi K Hirata J Yoshikawa

Background: The prevalent theory concerning the pathogenesis of chronic obstructive pulmonary disease (COPD) is of an imbalance between oxidants and antioxidants in the lung. It has recently been reported that the production of peroxynitrite, an extremely potent oxidant, is increased in the airways of patients with COPD. A study was undertaken of the imbalance between the levels of nitrogen oxi...

2004
G. Curci G. Visconti D. J. Jacob M. J. Evans

[1] We report on the production and transport of the 0.4 Tg of nitric oxide generated in the Siberian upper troposphere by the 1908 Tunguska object. The simulation uses a threedimensional chemistry and transport model of the global troposphere. We find that much of the nitric oxide forms nitric acid that deposits downwind of the blast site within the first month, with no severe damage to the ec...

Journal: :Environmental Health Perspectives 1994
F P Jensen J Fenger

The Danish air pollution abatement is based by and large on emission control. Since the ratification of the international sulfur protocol of 1985, there has been a continuous tightening of the permissible sulfur content in fuels and of the maximum emissions from power plants. As a consequence, the total annual emission of sulfur dioxide (SO2) has been reduced from 450,000 tons in the seventies ...

2012
Patricia F. Coogan Laura F. White Michael Jerrett Jason G. Su Julie R. Palmer

Background—Evidence suggests that longer-term exposure to air pollutants over years confers higher risks of cardiovascular morbidity and mortality than shorter-term exposure. One explanation is that the cumulative adverse effects that develop over longer durations lead to the genesis of chronic disease. Preliminary epidemiological and clinical evidence suggests that air pollution may contribute...

Journal: :Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene) 1987

2013
H. Calderon C. Gularte S. Hand M. McBee M. Taborn J. Tran Dr. Kung - Hui Chu

Human activities related to nitrogen have caused an overarching problem ‐ an imbalance in the global nitrogen cycle. Through conventional wastewater treatment processes, mainly a combination of aerobic nitrification and anoxic denitrification processes, ammonia and other forms of nitrogen can be converted into nitrogen gas and return back to the nitrogen cycle. However, this approach not only r...

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