Searched for: subject%3A%22Nitrogen%255C%2Boxide%22
(41 - 50 of 50)

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Baert, R.S.G. (author), Beckman, D.E. (author), Veen, A. (author), TNO Wegtransportmiddelen (author)
Different systems for achieving short-route cooled EGR on turbocharged and aftercooled heavy-duty diesel engines have been tested on a 12 litre 315 kW engine with 4 valves per cylinder and an electronically controlled unit pump fuel injection system. In all of these systems the exhaust gas was tapped off before the turbine, cooled and mixed with...
conference paper 1999
document
Verhaak, M.J.F.M. (author), Pels, J.R. (author)
Removal of nitrous oxide (N2O) from exhausts of chemical plants andcertain combustion facilities is an effective way for substantial reduction of greenhouse gas emissions from anthropogenic sources. ECN has developed a catalyst for catalytic removal of N2O from various exhaust gases using hydrocarbons (propane or methane) as reducing agent. The...
other 1999
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Walton, S. (author), Gallagher, M.W. (author), Duyzer, J.H. (author), TNO Milieu, Energie en Procesinnovatie (author)
A 1D deposition model derived from work by Baldocchi, has been used to interpret the exchange of NO, NO2 and O3 measured over an orchard. Where possible, direct measurements from the orchard were used in favour of existing model parameterisations. The model incorporates NO(x)-O3 chemistry and an emission of NO at the air-soil interface. Model...
article 1997
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Farmer, P.B. (author), Sepai, O. (author), Lawrence, R. (author), Autrup, H. (author), Nielsen, P.S. (author), Baan, R.A. (author), van Delft, J.H.M. (author), Steenwinkel, M.J.S.T. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)
A coordinated study was carried out on the development, evaluation and application of biomonitoring procedures for populations exposed to environmental genotoxic pollutants. The procedures used involved both direct measurement of DNA or protein damage (adducts) and assessment of secondary biological effects (mutation and cytogenetic damage)....
article 1996
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Baert, R.S.G. (author), Beckman, D.E. (author), Verbeek, R.P. (author), TNO Wegtransportmiddelen (author)
An EGR system for turbocharged (and aftercooled) heavy-duty diesel engines have been demonstrated on a 12 litre 315 kW engine with 4 valves per cyclinder head and high pressure injection system. In the EGR system exhaust gas is tapped of before the turbine, run through a cooler and mixed with the intake air after the compressor and aftercooler....
conference paper 1996
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Duyzer, J.H. (author), Weststrate, J.H. (author), Walton, S. (author), Instituut voor Milieuwetenschappen TNO (author)
The deposition flux of O3 to a Douglas fir forest in the Netherlands was monitored by eddy correlation during nine months. At the same time the concentration gradients of NO, NO2 and O3 were determined over the forest. The canopy resistance to O3 uptake was calculated from the measurements ant it compared well with model estimates. The...
conference paper 1995
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TNO Milieu, Energie en Procesinnovatie (author), Duyzer, J. (author), Fowler, D. (author)
This review outlines current understanding of the exchange processes and methods used to estimate regional NOy deposition. Several methods have been used to measure dry deposition. Measurement artefacts such as non-stationarity caused by local sources, monitors responding to other gases than NO2 and the influence of photochemical reactions have...
article 1994
document
Besemer, A.C. (author), Hoofdgroep Maatschappelijke Technologie TNO (author)
The paper describes the analysis of products of the photochemical degradation of toluene and toluene-14C in smog chamber experiments. Compounds identified included methylglyoxal, possibly the recently postulated butenedial and other carbonyl compounds. The main product of photochemical degradation of methylglyoxal appeared to be acetaldehyde....
article 1982
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Kruysse, A. (author), Feron, V.J. (author), Immel, H.R. (author), Centraal instituut voor voedingsonderzoek TNO (author)
The inhalation toxicity of peroxyacetyl nitrate (PAN) was examined in acute (single exposure), subacute (4-wk repeated exposure) and subchronic (13-wk repeated exposure) studies in rats. The 4-hr LC50 was found to be 95 ppm. In the 4-wk study rats were exposed to 0, 0.9, 4.1 or 11.8 ppm PAN vapor for 6 hr/day, 5 days/wk. Exposure to 11.8 ppm...
article 1977
document
Instituut voor Milieuhygiƫne en Gezondheidstechniek TNO (author), Guicherit, R. (author)
report 1975
Searched for: subject%3A%22Nitrogen%255C%2Boxide%22
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