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nitrogen center

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  • Nitrogen washout — (or Fowler s method) is a test for measuring dead space in the lung during a respiratory cycle, as well as some parameters related to the closure of airways. Contents 1 Procedure 2 Parameters 3 See also 4 References …   Wikipedia

  • Nitrogen inversion — in ammonia Inversion of an amine. The pair of dots represents the lone electron pair on the nitrogen atom. In chemistry, a nitrogen compound like …   Wikipedia

  • Nitrogen fixation — is the natural process, either biological or abiotic, by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3).[1] This process is essential for life because fixed nitrogen is required to biosynthesize the basic building blocks of …   Wikipedia

  • Nitrogen-vacancy center — The nitrogen vacancy center (N V center) is one of numerous point defects in diamond. Its most explored and useful property is photoluminescence, which can be easily detected from an individual N V center. Electron spins at N V centers, localized …   Wikipedia

  • Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …   Wikipedia

  • Nitrogen cycle — Schematic representation of the flow of nitrogen through the environment. The importance of bacteria in the cycle is immediately recognized as being a key element in the cycle, providing different forms of nitrogen compounds assimilable by higher …   Wikipedia

  • Nitrogen asphyxiation — For the method of slaughtering farm animals, see Controlled Atmosphere Killing. Part of a series on Capital punishment Issues …   Wikipedia

  • Nitrogen mustard — HN1 (bis(2 chloroethyl)ethylamine) …   Wikipedia

  • Nitrogen rule — The nitrogen rule states that organic compounds containing exclusively hydrogen, carbon, nitrogen, oxygen, silicon, phosphorus, sulfur, and the halogens either have 1) an odd nominal mass that indicates an odd number of nitrogen atoms are present …   Wikipedia

  • Isotopes of nitrogen — Natural Nitrogen (N) consists of two stable isotopes, nitrogen 14, which makes up the vast majority of naturally occurring nitrogen, and nitrogen 15. Fourteen radioactive isotopes (radioisotopes) have also been found so far, with atomic masses… …   Wikipedia

  • Douglas-Hart Nature Center — The Douglas Hart Nature Center in Mattoon Illinois is a conservancy site that offers visitors Illinois habitats, field programs, eco educational classes, and volunteer opportunities for all ages. IN the 1960s, Helen Douglas Hart made her dream, a …   Wikipedia

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