- heavy nitrogen
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the stable isotope of nitrogen having a mass number of 15.
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Universalium. 2010.
heavy nitrogen
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heavy nitrogen — noun : an isotope of nitrogen having a mass member greater than 14; especially : nitrogen of mass 15 * * * the stable isotope of nitrogen having a mass number of 15 … Useful english dictionary
nitrogen-15 — The less common stable nitrogen isotope, making up 0.37% of natural nitrogen. SYN: heavy nitrogen … Medical dictionary
nitrogen dioxide — n a poisonous strongly oxidizing reddish brown gas NO2 * * * a brownish, irritant gas, NO2, generated by the decomposition of nitrogen tetroxide or the reaction of metals with concentrated nitric acid. Exposure to heavy concentrations causes lung … Medical dictionary
Nitrogen narcosis — Inert gas narcosis [Nitrogen narcosis] Classification and external resources Divers breathe a mixture of oxygen, helium and nitrogen for deep dives to avoid the effects of narcosis. A cylinder label shows the maximum operating depth and mixture… … Wikipedia
nitrogen group element — ▪ chemical elements Introduction any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… … Universalium
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 rejection unit — A nitrogen rejection unit (NRU) selectively removes nitrogen from a gas. The name can be applied any system that removes nitrogen from natural gas. For high flow rate applications, cryogenic processing is the norm[citation needed]. This is a… … Wikipedia
Heavy Lift Launch Vehicle — A Heavy Lift Launch Vehicle, or HLLV, is distinguished from Medium Lift Launch Vehicles (MLLV) by the mass that they can lift into Low Earth Orbit (LEO). While there is currently no specifically stated mass, it is generally agreed that rockets… … Wikipedia
Heavy water — Not to be confused with hard water or tritiated water. Deuterium oxide IUPAC name … Wikipedia
nitrogen — 1. A gaseous element, atomic no. 7, atomic wt. 14.00674; N2 forms about 78.084% by volume of the dry atmosphere. 2. The molecular form of n., N2. 3. Pharmaceutical grade N2, containing not less than 99.0% by volume of N2; used as a … Medical dictionary
