Total Kjeldahl Nitrogen or TKN is the sum of organic nitrogen, ammonia (NH3) and ammonium (NH4+) in the chemical analysis of soils.
Nitrogen fixation | nitrogen | nitrogen oxide | nitrogen fixation | Yeast assimilable nitrogen | Reactive nitrogen species | Nitrogen oxide | Nitrogen deficiency | Nitrogen |
Allocasuarina verticillata, the drooping sheoak, a nitrogen fixing tree species native of southeastern Australia
Acid intolerance of plants may be mitigated by lime addition and by calcium and nitrogen fertilizers.
Use here relies upon the nitrogen fixing tree species Sesbania sesban, Tephrosia vogelii, Gliricidia sepium and Faidherbia albida.
Primo Levi in his novel The Periodic Table in chapter Nitrogen considers pythons as a source for alloxane on behalf of a lipstick producer but he is turned down by the director of the Turin zoo because the zoo already has lucrative contracts with cosmetics companies.
Amide, an organic functional group characterized by a carbonyl group linked to a nitrogen atom, or a compound that contains this functional group
She then went to the University of Bristol, gaining a BSc in Chemistry, and became an engineer working for Air Products, where she became a Product Development Manager for nitrogen.
Inergen, Sinorix CDT and Cerexen, which use some combination of argon, nitrogen and carbon dioxide are similar products.
Azospirillum doebereinerae is a species of nitrogen-fixing bacteria associated with the roots of Miscanthus species.
Another unique brewery is Mogallywood Brewery close to Magaliesburg that brews cask-conditioned real ale served from a cask without additional nitrogen or carbon dioxide pressure.
Through the process of diffusion, the nitrates move deep within the rock where they are converted by anaerobic bacteria to free nitrogen gas.
Ludwigshafen also refined "30-50 tons/day of crude oil...brought in from Brücksel, near Karlsruhe...to products including lube oils." About 2.5 miles away from Ludwigshafen, an Oppau plant produced fertilizer and up to "800 T/day nitrogen as ammonia and a considerable part of this was exported as liquid ammonia to Hochst, Wolfen and Bittefeld." A separate Oppau plant produced up to 60 T/day of urea.
Burkholderia heleia is a gram-negative, nitrogen-fixing, aerobic, non-spore-forming, rod-shaped bacterium from the genus of Burkholderia and the family of Burkholderiaceae which was isolated from the Chinese water chestnut Eleocharis dulcis in acid sulfate soil areas of Vietnam.
The roots have nitrogen-fixing nodules that contain the soil actinomycete Frankia.
Observations of comet C/1999 S4 (LINEAR) with the Chandra satellite in 2000 determined that X-rays observed from that comet were produced predominantly by charge exchange collisions between highly charged carbon oxygen and nitrogen minor ions in the solar wind, and neutral water, oxygen and hydrogen in the comet's coma.
Increased photosynthesis and higher plant nitrogen levels have been observed in habitats frequented by Mule Deer, Antelope, and Elk.
Denitrifying bacteria form a necessary part of the process known as denitrification as part of the nitrogen cycle, their primary purpose being to metabolise nitrogenous compounds, with the assistance of the nitrate reductase enzyme, to turn oxides back to nitrogen gas or nitrous oxides for energy generation.
They carry modified leaves offering accommodation to ants, including those of the family Dolichoderinae, and in return gain some sustenance from increased carbon dioxide and nitrogen levels, and a degree of protection from noxious animals and plants.
Side chains of the surrounding amino acids can have an effect on the binding of the nitrogen atom, mainly three Phe can affect the methyl groups bound to the nitrogen atom (not shown in figure 2).
The Elaeagnaceae often harbor nitrogen-fixing actinomycetes of the genus Frankia in their roots, making them useful for soil reclamation.
Formaldehyde fixes tissue or cells by irreversibly connecting a primary amine group in a protein molecule with a nearby nitrogen in a protein or DNA molecule through a -CH2- linkage called a Schiff base.
Nitrogen fixation, a process by which nitrogen is converted from its inert molecular form to a compound more readily available and useful to living organisms
Casuarina glauca is an actinorhizal plant producing root nitrogen-fixing nodules infested by Frankia.
FLOX, in chemistry, a combustion process said to reduce nitrogen oxide formation by suppressing peak flame temperatures
During the First World War, Donnan was a consultant to the Ministry of Munitions, and worked with chemical engineer K. B. Quinan on plants for the fixation of nitrogen, for compounds essential for the manufacture of munitions.
Préface de Stanislas Meunier— Gauthier-Villars et fils (1897)--- Determination of ammonia in the air, nitrogen absorption from the air by plants.
Legume cover crops are planted in the vineyard to convert nitrogen for the vine use, as well as serving as homes for beneficial insects.
This enzyme manufactures glutamate from glutamine and α-ketoglutarate, and thus along with glutamine synthetase (abbreviated GS) plays a central role in the regulation of nitrogen assimilation in photosynthetic eukaryotes and prokaryotes.
Hantzsch pyridine synthesis, multi-component organic reaction between an aldehyde a β-keto ester and a nitrogen donor
For example in 1981, shortly before the launch of the first Space Shuttle mission, two technicians lost consciousness and one of them died after they entered the Orbiter aft compartment which was pressurized with pure nitrogen as a precaution against fire.
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In a televised documentary in 2007, the British political commentator (and former Member of Parliament) Michael Portillo examined execution techniques in use around the world and found them unsatisfactory; his conclusion was that nitrogen asphyxiation would be the best method.
Isobaric Counterdiffusion was first described by Graves, Idicula, Lambertsen, and Quinn in 1973 in subjects who breathed one inert gas mixture (nitrogen or neon) while being surrounded by another (helium).
Nitrogen isotope data has also been used to measure the amount of exchange of air between the stratosphere and troposphere using data from the greenhouse gas Laminopathy
Nitrogen-containing bisphosphate drugs used in the treatment of osteoporosis reduce farnesyldiphosphate production and thus prelamin A farnesylation.
Leghemoglobin (also leghaemoglobin or legoglobin) is a nitrogen or oxygen carrier, because naturally occurring oxygen and nitrogen interact similarly with this protein; and a hemoprotein found in the nitrogen-fixing root nodules of leguminous plants.
Karl Heinrich Ritthausen found legumin from peas, vetches, lentils, and field beans to contain the elements in the following proportions: carbon, 51.48%; hydrogen, 7.02%; nitrogen, 16.77%; and oxygen, 24.32%.
Mannomustine (INN), also known as mannitol nitrogen mustard, tradename Degranol is an old alkylating antineoplastic agent from the group of nitrogen mustards.
Plants have chemical "machinery" which transforms some of them (primarily the nitrogen compounds) into useful substances, and it has been shown by Brian J. Ford that abscissa leaves also carry wastes away from the parent plant.
Phosphazene bases also contain phosphorus and are, in general, more alkaline than standard amines and nitrogen-based heterocyclics.
Carbonaceous biochemical oxygen demand (CBOD), the amount of oxygen needed to break down carbon compounds, excluding nitrogen compounds
The P. ahipa plant is therefore able to form an efficient symbiosis with nitrogen-fixing bacteria, such as Rhizobium and Bradyrhizobium, and is able to fix 58–80 kg nitrogen per hectare.
Known as a Charged Particle Accelerator (CPA), the nuclear accelerator is a 250 keV Ion accelerator which can deliver all Gaseous ions such as +H, +N, +O, +He, +Ne, +Ar, +Kr, +Xe or molecular ions.
Pamidronic acid (INN) or pamidronate disodium (USAN), pamidronate disodium pentahydrate is a nitrogen containing bisphosphonate, used to prevent osteoporosis.
Reactive nitrogen species (RNS) are a family of antimicrobial molecules derived from nitric oxide (·NO) and superoxide (O2·−) produced via the enzymatic activity of inducible nitric oxide synthase 2 (NOS2) and NADPH oxidase respectively.
91F0 — Riparian mixed forests of Pedunculate Oak (Quercus robur), European White Elm (Ulmus laevis) and Field Elm (Ulmus minor), Common Ash (Fraxinus excelsior) or Narrow-leafed Ash (Fraxinus angustifolia), along the great rivers - hardwood forest on the banks of large rivers, with largely undisturbed flooding dynamics; forests in nitrogen-rich locations usually with well-developed undergrowth, rich in trailing plants, 15 ha.
As soil-forming pioneer trees the drought-resistant Sungkai (Peronema canessceus) and legumes such as Acacia mangium which fix nitrogen through symbiotic Rhizobium bacteria in their root nodules.
Legumes are inoculated with bacteria of the genus Rhizobium which induce nitrogen-fixing nodules in the roots of legumes.