Sentences with phrase «by reactive nitrogen»

Instead, cells start «SNO - ing» proteins when they get overwhelmed by reactive nitrogen molecules.

Not exact matches

Measurements from the winter of 1994 — 95 indicating removal of total reactive nitrogen from the Arctic stratosphere by particle sedimentation were used to constrain a microphysical model.

Manmade production of ammonia and nitrate fertilizers has exploded in recent decades and now vastly exceeds the amount of atmospheric nitrogen converted into reactive nitrogen by microbial organisms around the world.

Free radicals are released by cellular mechanisms responding to impact and cardio - muscular stress - specifically reactive oxygen and nitrogen species (RONS).

Intense exercise also upregulates nitric oxide production by 600 % which can further produce reactive nitrogen species.

In order of reduction, they call for controlling nitrogen oxide emissions from the burning of fossil fuels using «maximum feasible reductions,» which could reduce reactive nitrogen emissions by 55 billion pounds of a year; increasing the efficiency of fertilizing crops (33 billion pounds a year); improved animal management policies (33 billion pounds); and ensuring that at least half the world's urban population has sewage treatment (11 billion pounds).

More nitrogen is now converted into reactive forms by industry than all by all the planet's natural processes and our industrial and agricultural processes are causing a continual build - up of long - lived greenhouse gases to levels unprecedented in at least the last 800,000 years and possibly much longer.

For example, early global chemical modelling results argued that global tropospheric ozone, a greenhouse gas, was controlled by emissions of the highly reactive gases nitrogen oxides (NOx), carbon monoxide (CO) and non-methane hydrocarbons (NMHC, also known as volatile organic compounds, VOC).