Sentences with phrase «oxide emissions found»

«Enhanced nitrous oxide emissions found in field warming experiment in the Arctic.»

Not exact matches

A single carbon nanotube about two billionths of a meter wide can compete with the best materials of today at detecting ammonia and nitrous oxide, a gas often found in automobile emissions.

And a Nobel - prize winning chemist has publicized his findings that biofuels made from nitrogen - thirsty plants (like corn and canola) actually produce a net increase in greenhouse gas emissions, because they release nitrous oxide during their production.

FIELD FUMES California's agricultural regions are responsible for between 20 and 51 percent of the total emissions of nitrogen oxide gases in the state, new research finds.

They found surprisingly, that human - induced emissions of methane and nitrous oxide from ecosystems overwhelmingly surpass the ability of the land to soak up carbon dioxide emissions, which makes the terrestrial biosphere a contributor to climate change.

The work builds on research, published in Science last year, in which the Wang and Datye groups found a novel way to trap and stabilize individual platinum atoms on the surface of cerium oxide, a commonly used component in emissions control catalysts.

A study commissioned by Iridium found that between the service's proposed start in 2017 and 2030, the technology should save airlines about $ 7 billion on fuel and cut carbon dioxide and nitrogen oxide emissions by 35 million tonnes.

The team confirmed the environmental benefits to introducing legumes and found that in such cropping systems, overall nitrous oxide emissions reduced by approximately 20 - 30 % and fertilizer use was down by 25 % to almost 40 % in some cases.

An analysis of 27 states found that, on average, summer emissions of sulfur dioxide (SO2), nitrogen oxides (NOx) and carbon dioxide (CO2) go up by hundreds to thousands of metric tons per degree Celsius increase.

Heavy - duty vehicles, such as commercial trucks and buses, were found to be, by far, the largest contributor of emissions, accounting for 76 percent of the total excess nitrogen oxide emissions.

The British firm Emissions Analytics found smog - causing nitrogen - oxide emissions were four times higher thanEmissions Analytics found smog - causing nitrogen - oxide emissions were four times higher thanemissions were four times higher than allowed.

The EPA has found that the defeat devices allowed real - world emissions for nitrogen oxide, a pollutant that's been linked to asthma and other respiratory problems, to reach as high as 40 times the legal limit under the Clean Air Act.

We could not find any studies in western Canada which compared - nitrous oxide emissions from pulse crops such as lentils, peas or chick peas, with nitrous oxide emissions from cereals such as spring wheat.

No examples of measurement of nitrous oxide emissions from deep banded nitrogen (N) fertilizer have been found to date for western Canada.

We did not find to date any published studies which compared the effects of type of tillage system and nitrogen fertilizer placement method on nitric oxide emissions.

The early results which found higher levels of nitrous oxide emissions from zero till all seem to have employed surface application of N fertilizer.

Experiments in Quebec found that soybeans, a major legume oilseed crop in eastern Canada, produced lower nitrous oxide emissions than corn, the major cereal crop grown in the eastern region.

And they found that the highest post-thaw emissions of nitrous oxide came from the bare peat soils: these emissions were fivefold those from still - frozen soils and matched the kind of outgassing observed in tropical soils, which are the world's largest natural land - based nitrous oxide source.

In 2014, researchers at the National Oceanic and Atmospheric Administration found that the increased use of natural gas combined cycles in power generation has led to 40 percent less nitrogen oxide emissions and 44 percent less sulfur oxides emissions since 1997.

The body found that, without additional action, emissions of the greenhouse gases covered by the Kyoto Protocol - namely carbon dioxide, methane, nitrous oxide, sulphur hexafluoride, PFCs and HFCs - are likely to rise by 25 - 90 % by 2030 over their levels in 2000.

The conclusion is based on a finding that bromine and iodine oxide, natural chemicals produced by sea spray and emissions from microscopic sea organisms, destroyed ozone in the atmosphere west of equatorial Africa — destroyed 50 % more ozone than than expected.

An ISO New England study found that as the fuel mix shifted toward natural gas, regional emissions dropped 91 percent for sulfur dioxide and 56 percent for nitrogen oxide (as well as 22 percent for carbon dioxide) between 2006 and 2015.

Based on experiments in infested areas of Georgia and subsequent biogeochemical modeling, Hickman's team found that the end result of these microbial communities springing up is an average 127 % increase in soil nitric oxide (NO) emissions in invaded areas.

Surprisingly, the research finds that when it comes to these human - driven methane and nitrous oxide emissions, a key driver is Southern Asia, and rice cultivation in particular.