total nitrogen

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• total nitrogen — suminis azotas statusas T sritis chemija apibrėžtis Azoto elemento, esančio medžiagoje įvairių junginių pavidalu, kiekių suma. atitikmenys: angl. total nitrogen rus. общий азот; суммарный азот …   Chemijos terminų aiškinamasis žodynas

• total nitrogen — bendrasis azoto kiekis statusas T sritis ekologija ir aplinkotyra apibrėžtis Vandenyje, nuotekose, dirvožemyje, ore, organizmuose esančių organinių ir neorganinių azoto junginių bendras kiekis (N). priedas( ai) MS Word formatas, MS Word formatas …   Ekologijos terminų aiškinamasis žodynas

• Nitrogen nutrition in the arbuscular mycorrhizal system — Contents 1 Role of nitrogen 1.1 Mechanism of action 1.2 Community and ecology 1.3 Alternate theories …   Wikipedia

• 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 balance — is the measure of nitrogen output subtracted from nitrogen input.[1] Blood urea nitrogen can be used in estimating nitrogen balance, as can the urea concentration in urine. A positive value is often found during periods of growth, tissue repair… …   Wikipedia

• Total organic carbon — (TOC) is the amount of carbon bound in an organic compound and is often used as a non specific indicator of water quality or cleanliness of pharmaceutical manufacturing equipment. A typical analysis for TOC measures both the total carbon present… …   Wikipedia

• Total Kjeldahl Nitrogen — or TKN is the sum of organic nitrogen; ammonia (NH3) and ammonium (NH4+) in biological wastewater treatment.TKN is determined in the same manner as organic nitrogen, except that the ammonia is not driven off before the digestion step.It is named… …   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 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-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 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