... and the large-scale burning of fossil fuels, massive amounts of reactive nitrogen compounds, such as ammonia, have entered the environment.
"A unique and troublesome aspect of nitrogen is that a ...
... any processes that affect the ocean uptake of CO2 can have an effect on global warming.
Various nitrogen compounds, especially nitrates and ammonium, play an important role in ocean’s photosynthesis ...
... s atmosphere, but few organisms can directly convert dinitrogen into biologically useful nitrogen compounds. Nitrogen fixation, as the process is called, requires the enzyme nitrogenase, possessed by ...
... strong—and energy rich—triple bond.
"Nitrogen compounds tend to be high energy density ... diatomic molecule. Recent experiments have shown that nitrogen transforms to nonmolecular single-bonded phases ...
Throughout the world, nitrogen compounds are released to the atmosphere from agricultural activities and combustion of fossil fuels. These pollutants are deposited to ecosystems as precipitation, ...
... in agricultural soils. A multifaceted approach was taken, involving recovery tests with pure organic nitrogen compounds, statistical analyses of different nitrogen fractions measured for 26 Illinois ...
... journal Geophysical Research Letters.
Nitrogen-fixing bacteria convert atmospheric nitrogen into nitrogen compounds that organisms can then use as food. This process is thought to be important in ...
... the Journal of the American Chemical Society his lab's synthesis of boron-nitrogen compounds with electronic and structural similarities to fundamentally important benzene molecules. That synthesis ...
... gas – carbon dioxide – from the atmosphere, Duce said. This gain, however, is offset by the nitrogen compound, nitrous oxide, that also forms in the ocean due to the nitrogen fertilization and is re- ...
... Shih-Yuan Liu have successfully synthesized and structurally characterized boron-nitrogen compounds that are isoelectronic and isostructural to the fundamentally important benzene molecule. Given the ...
... dissolved oxygen and excess nitrogen gas from denitrification (the breaking down of nitrogen compounds such as nitrate) were all important factors affecting the concentrations of pesticides and their ...
... Zone, while the 2008 VLT images show a clear shift to the south.
The haze, which could be the nitrogen compound hydrazine - used on Earth as a rocket propellant - or possibly frozen crystals of ...
... special nitrogen-fixing plants, which are capable of converting atmospheric nitrogen into nitrogen compounds for growth, losses of nitrogen in the order of what he and his colleagues documented would ...
... , according to researchers. Scientists made a quantitative study of the origin and evolution of nitrogen compounds in the Arctic atmosphere, in order to understand their environmental impact on this ...
... , according to researchers. Scientists made a quantitative study of the origin and evolution of nitrogen compounds in the Arctic atmosphere, in order to understand their environmental impact on this ...
