scholarly journals Unusually high soil nitrogen oxide emissions influence air quality in a high-temperature agricultural region

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
P. Y. Oikawa ◽  
C. Ge ◽  
J. Wang ◽  
J. R. Eberwein ◽  
L. L. Liang ◽  
...  
Keyword(s):  
High Temperature ◽  
Air Quality ◽  
Nitrogen Oxide ◽  
Soil Nitrogen ◽  
Nitrogen Oxide Emissions ◽  
Agricultural Region ◽  
High Soil

EFFECTS OF WOODY VEGETATION ENCROACHMENT ON SOIL NITROGEN OXIDE EMISSIONS IN A TEMPERATE SAVANNA

2003 ◽  
Vol 13 (4) ◽  
pp. 897-910 ◽  
Author(s):  
Roberta E. Martin ◽  
Gregory P. Asner ◽  
R. James Ansley ◽  
Arvin R. Mosier
Keyword(s):  
Nitrogen Oxide ◽  
Soil Nitrogen ◽  
Woody Vegetation ◽  
Nitrogen Oxide Emissions ◽  
Vegetation Encroachment

Controls on soil nitrogen oxide emissions from forest and pastures in the Brazilian Amazon

2001 ◽  
Vol 15 (4) ◽  
pp. 1021-1030 ◽  
Author(s):  
Diana C. Garcia-Montiel ◽  
Paul A. Steudler ◽  
Marisa C. Piccolo ◽  
Jerry M. Melillo ◽  
Christopher Neill ◽  
...  
Keyword(s):  
Nitrogen Oxide ◽  
Soil Nitrogen ◽  
Brazilian Amazon ◽  
Nitrogen Oxide Emissions

scholarly journals Changing Patterns in U.S. Air Quality

Eos ◽  
2015 ◽  
Vol 96 ◽  
Author(s):  
Colin Schultz
Keyword(s):  
United States ◽  
Air Quality ◽  
Nitrogen Oxide ◽  
Ground Level ◽  
Nitrogen Oxide Emissions ◽  
Ground Level Ozone ◽  
Northeast United States ◽  
Changing Patterns

Over the northeast United States, ground-level ozone will peak in the winter rather than the summer thanks to continued reductions of regional nitrogen oxide emissions from smokestacks and tailpipes.

Soil nitrogen cycling and nitrogen oxide emissions along a pasture chronosequence in the humid tropics of Costa Rica

1999 ◽  
Vol 31 (3) ◽  
pp. 387-394 ◽  
Author(s):  
Edzo Veldkamp ◽  
Eric Davidson ◽  
Heather Erickson ◽  
Michael Keller ◽  
Antje Weitz
Keyword(s):  
Costa Rica ◽  
Nitrogen Oxide ◽  
Nitrogen Cycling ◽  
Soil Nitrogen ◽  
Humid Tropics ◽  
Nitrogen Oxide Emissions ◽  
Soil Nitrogen Cycling

Control of Nitrogen Oxide Emissions for Nitric Acid Plants

Pollution ◽  
1973 ◽  
pp. 278-287 ◽  
Author(s):  
H. G. Rigo ◽  
W. J. Mikucki ◽  
M. L. Davis
Keyword(s):  
Nitric Acid ◽  
Nitrogen Oxide ◽  
Nitrogen Oxide Emissions

scholarly journals Possibilities of Simultaneous In-Cylinder Reduction of Soot andNOxEmissions for Diesel Engines with Direct Injection

2008 ◽  
Vol 2008 ◽  
pp. 1-13 ◽  
Author(s):  
U. Wagner ◽  
P. Eckert ◽  
U. Spicher
Keyword(s):  
Nitrogen Oxide ◽  
Diesel Engines ◽  
Fuel Injection ◽  
Soot Formation ◽  
Soot Oxidation ◽  
The Other ◽  
Injection System ◽  
Nitrogen Oxide Emissions ◽  
Injection Strategy ◽  
Soot Emissions

Up to now, diesel engines with direct fuel injection are the propulsion systems with the highest efficiency for mobile applications. Future targets in reducingCO2-emissions with regard to global warming effects can be met with the help of these engines. A major disadvantage of diesel engines is the high soot and nitrogen oxide emissions which cannot be reduced completely with only engine measures today. The present paper describes two different possibilities for the simultaneous in-cylinder reduction of soot and nitrogen oxide emissions. One possibility is the optimization of the injection process with a new injection strategy the other one is the use of water diesel emulsions with the conventional injection system. The new injection strategy for this experimental part of the study overcomes the problem of increased soot emissions with pilot injection by separating the injections spatially and therefore on the one hand reduces the soot formation during the early stages of the combustion and on the other hand increases the soot oxidation later during the combustion. Another method to reduce the emissions is the introduction of water into the combustion chamber. Emulsions of water and fuel offer the potential to simultaneously reduceNOxand soot emissions while maintaining a high-thermal efficiency. This article presents a theoretical investigation of the use of fuel-water emulsions in DI-Diesel engines. The numerical simulations are carried out with the 3D-CFD code KIVA3V. The use of different water diesel emulsions is investigated and assessed with the numerical model.

Carbon, sulfur and nitrogen oxide emissions from combustion of pulverized raw and torrefied biomass

Fuel ◽  
2017 ◽  
Vol 188 ◽  
pp. 310-323 ◽  
Author(s):  
Xiaohan Ren ◽  
Rui Sun ◽  
Xiaoxiao Meng ◽  
Nikita Vorobiev ◽  
Martin Schiemann ◽  
...  
Keyword(s):  
Nitrogen Oxide ◽  
Nitrogen Oxide Emissions ◽  
Torrefied Biomass
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