| nitrosamine |
A substance that is used in cancer research to cause bladder tumors in laboratory animals. This is done to test new diets, drugs, and procedures for use in cancer prevention and treatment.
출처: www.stjude.org/glossary
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| nitrosourea |
An anticancer drug that can cross the blood-brain barrier. Carmustine and lomustine are nitrosoureas.
출처: www.stjude.org/glossary
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| nitrogen dioxide |
A brown gas, formula NO 2 , found at all levels in the atmosphere. In the troposphere it photodissociates to give free oxygen atoms, which then form ozone, and is thus a key player in local and regional air pollution events. In the stratosphere it participates in catalytic ozone destruction cycles, but also forms stable nitrate reservoir species that ameliorate ozone loss.
출처: amsglossary.allenpress.com/glossary/browse
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| nitrogen |
(Symbol N.) A colorless, tasteless, odorless gaseous element, atomic number 7, atomic weight 14.007. It is the most abundant constituent of the atmosphere, amounting to 78.09% by volume of dry air. The molecular formula for nitrogen gas is N 2 ; its molecular weight is 28.016. Nitrogen enters the atmosphere from volcanoes and from the decay of organic matter. It is removed from the atmosphere by certain natural nitrogen-fixing bacteria for use in plant life processes. ...
출처: amsglossary.allenpress.com/glossary/browse
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| nitrogen cycle |
A continuous series of natural processes by which nitrogen successively passes through air, soil, and organisms involving principally organism decay, nitrogen fixation, nitrification, and denitrification. See nitrogen-fixing plants.
출처: amsglossary.allenpress.com/glossary/browse
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