Determination of nitrogen oxide emissions from soils: Results from a grassland site in Colorado, United States

The Southeastern United States depends on coal to supply 60% of its electricity needs. The region leads in CO2 emissions and ranks second in emissions of SO2 and NO2. Compared with coal, biomass feedstocks have lower emission levels of sulfur or sulfur compounds and can potentially reduce nitrogen oxide emissions. This study examines the economic impacts of cofiring biomass feedstocks with coal in coal-fired plants under three emission credit and two cofiring level scenarios. Economic impacts are estimated for producing, collecting, and transporting feedstock; retrofitting coal-fired utilities for burning feedstock; operating cofired utilities; and coal displaced from burning the feedstock.

Download Full-text

Changing Patterns in U.S. Air Quality

Eos ◽

10.1029/2015eo024509 ◽

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.

Download Full-text

The determination of nitrogen oxide emissions by monitoring the steam temperature of the boiler

2014 International Conference and Exposition on Electrical and Power Engineering (EPE) ◽

10.1109/icepe.2014.6970082 ◽

2014 ◽

Author(s):

Staviri Vlad-Florin

Keyword(s):

Nitrogen Oxide ◽

Steam Temperature ◽

Nitrogen Oxide Emissions

Download Full-text

Determination of burn severity models ranging from regional to national scales for the conterminous United States

Remote Sensing of Environment ◽

10.1016/j.rse.2021.112569 ◽

2021 ◽

Vol 263 ◽

pp. 112569

Author(s):

Joshua J. Picotte ◽

C. Alina Cansler ◽

Crystal A. Kolden ◽

James A. Lutz ◽

Carl Key ◽

...

Keyword(s):

United States ◽

Burn Severity

Download Full-text

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

Ecological Applications ◽

10.1890/1051-0761(2003)13[897:eowveo]2.0.co;2 ◽

2003 ◽

Vol 13 (4) ◽

pp. 897-910 ◽

Cited By ~ 43

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

Download Full-text

Do centers of origin have a center?

Paleobiology ◽

10.1017/s0094837300004607 ◽

1981 ◽

Vol 7 (3) ◽

pp. 305-307 ◽

Cited By ~ 7

Author(s):

John C. Briggs

Keyword(s):

United States ◽

North America ◽

Southeastern United States ◽

Important Criterion ◽

Centers Of Origin ◽

Single Region ◽

Evolutionary Radiation ◽

A Current ◽

Considerable Intensity

A current question being debated with considerable intensity is whether or not certain geographic areas act as centers of evolutionary radiation and supply species to other areas that are less active or less effective in an evolutionary sense. Darwin (1859) was the first to write about centers of origin which he called “single centers of creation.” He argued that each species was first produced within a single region and that it subsequently migrated from that area as far as its powers of migration and subsistence under past and present conditions permitted. Adams (1902), in discussing the influence of the southeastern United States as a center of distribution for the flora and fauna of North America, provided a series of criteria for the determination of “centers of dispersal.” His first, and evidently most important criterion was the location of “the greatest differentiation of a type.”

Download Full-text

IMPROVEMENT OF THE CAMERAL CHECKS PROCESS IN RUSSIA BASED ON FOREIGN EXPERIENCE

Russian science: actual researches and developments,Part 1 ◽

10.46554/russian.science-2020.03-1-835/838 ◽

2020 ◽

Author(s):

Darya Sergeevna Kareva ◽

◽

Sevinj Mahmud kyzy Ismailova ◽

Elena Evgenievna Dozhdva ◽

◽

...

Keyword(s):

United States ◽

The United States ◽

Foreign Experience ◽

Correct Determination

The article substantiates the need to reform cameral tax control in Russia based on the experience of the United States. The necessity of introducing into the procedure of cameral control the mechanism of requesting all documents confirming the correct determination of tax obligations is determined. The aim of improving the process of desk audits of control is that the new procedure for conducting audits will reduce the likelihood of tax violations.

Download Full-text

Control of Nitrogen Oxide Emissions for Nitric Acid Plants

Pollution ◽

10.1007/978-1-4899-0330-3_24 ◽

1973 ◽

pp. 278-287 ◽

Cited By ~ 1

Author(s):

H. G. Rigo ◽

W. J. Mikucki ◽

M. L. Davis

Keyword(s):

Nitric Acid ◽

Nitrogen Oxide ◽

Nitrogen Oxide Emissions

Download Full-text

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

International Journal of Rotating Machinery ◽

10.1155/2008/175956 ◽

2008 ◽

Vol 2008 ◽

pp. 1-13 ◽

Cited By ~ 12

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.

Download Full-text