Automotive
An engine innovation first conceived and tested by Sandia National Laboratories has attracted the attention of big business because of its potential to cost-effectively reduce emissions of soot and nitrogen oxides, encourage ...
Oct 24, 2019
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Energy & Green Tech
Polluting emissions from Chinese thermal power plants declined significantly between 2014 and 2017, according to research involving UCL.
Oct 7, 2019
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Engineering
Air pollution levels remain dangerously high in various parts of the world. According to the World Health Organization, 9 out of10 people breathe air containing high levels of pollutants, such as particulate matter and nitrogen ...
Oct 1, 2019
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Automotive
South Korean shipbuilding and industrial firm Hyundai Heavy Industries will pay a $47 million fine for illegally importing and selling dirty diesel engines in violation of American environmental rules, US authorities announced ...
Sep 20, 2019
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Hardware
(Tech Xplore)—Joel Hruska in ExtremeTech notes that the all-core clock on a Core i9-7980XE drops to 3.4GHz under full load, to keep power consumption at a manageable level. But then there is liquid nitrogen and an overclocker ...
Energy & Green Tech
(Tech Xplore)—The expression "science" of living is vague, imprecise, and could mean just about anything, from a video tutorial on biology to a diet guru promoting healthful meals.
Energy & Green Tech
As the most abundant gas in Earth's atmosphere, nitrogen has been an attractive option as a source of renewable energy. But nitrogen gas—which consists of two nitrogen atoms held together by a strong, triple covalent bond—doesn't ...
Apr 13, 2017
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Nitrogen (pronounced /ˈnaɪtrədʒɨn/) is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674 u. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere.
Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen. The extremely strong bond in elemental nitrogen dominates nitrogen chemistry, causing difficulty for both organisms and industry in converting the N2 into useful compounds, and releasing large amounts of energy when these compounds burn or decay back into nitrogen gas.
The element nitrogen was discovered by Daniel Rutherford, a Scottish physician, in 1772. Nitrogen occurs in all living organisms. It is a constituent element of amino acids and thus of proteins, and of nucleic acids (DNA and RNA). It resides in the chemical structure of almost all neurotransmitters, and is a defining component of alkaloids, biological molecules produced by many organisms.
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