Sentences with phrase «nitrogen emissions»

The filters used to create this color image show oxygen in blue, hydrogen in green and a combination of sulfur and nitrogen emission in red.

In this case, nitrogen is not the only contributor to PM formation, but reducing nitrogen emissions could help.

Light emitted by oxygen is shown as blue, hydrogen emission is shown as green, and nitrogen emission as red light.

The overestimation of bioenergy LCAs becomes increasingly magnified when the omission of CO2 is combined with the underestimation of nitrogen emissions from fertilizer application.

Smith says that the observed increase in nitrogen emissions from fertilizer is nearly double the value used in biofuel life - cycle assessments.

Environmentally, AMP systems came out in the green, while feedlot emissions were in the red primarily because of feed - based nitrogen emissions from fertilizer.

Although the U.S. could tighten existing clean air rules to combat atmospheric nitrogen emissions, the nation has neither comprehensive laws nor adequate monitoring devices for such emissions by livestock and farms.

Hubble's Faint Object Spectrograph (replaced by the STIS spectrograph in 1997) was used to observe hydrogen and nitrogen emission lines from gas in the disk.

That means the emission probability for excited CO2 (and water vapor) is significantly greater than zero and explains the observed emission spectra which show strong CO2 (and water vapor) emission spectral features rather than the continuum emission that would be expected if nitrogen emission dominated.

The move toward Tier 4 is made up of a 45 percent reduction in the oxides of nitrogen emissions compared to the current Tier 2 standard and an 85 percent reduction in particulate matter emissions based on preliminary analysis.

«Rapid economic growth in China has driven high levels of nitrogen emissions in the past few decades,» says Zhang Fusuo, an agriculture researcher at the China Agricultural University in Beijing and a co-author of the study.

Government action could help significantly: the European Union, for instance, passed an acidification abatement pact called the Gothenburg Protocol in 1999, which has decreased Europe's nitrogen emissions by one third, during a time when U.S. emissions have remained constant.

Those truths of the historic situations regarding CFCs and the ozone hole, tobacco and cancers, and sulfur and nitrogen emissions and acid rain bear repeating over and over in contact with the media as an opening gambit in countering the usual septic memes.

David, In your response to question # 10 «The acidification of the ocean is a much longer - term issue than acid rain, which goes away about two weeks after you reduce sulfur and nitrogen emissions from smokestacks.»

The vehicles in our fleet produce 97 percent less hydrocarbon and oxides of nitrogen emissions than vehicles that meet today's nationwide top emissions standard.

Our hybrid driving school vehicles produce 97 percent less hydrocarbon and oxides of nitrogen emissions than vehicles that meet the top national emissions standard.

Our driving school vehicles are extremely clean to operate, producing 97 percent less hydrocarbon and oxides of nitrogen emissions than vehicles that meet today's nationwide top emissions standard.

All of this at 97 percent less hydrocarbon and oxides of nitrogen emissions than vehicles that meet today's nationwide top emissions standard.