*  List of PET radiotracers - Wikipedia
Oxygen-15 water Nitrogen-13 ammonia [82Rb] Rubidium-82 chloride [11C] Acetate (Also used in oncology) [11C] 25B-NBOMe [18F] ... These are chemical compounds in which one or more atoms have been replaced by a short-lived, positron emitting radioisotope. ...
  https://en.wikipedia.org/wiki/List_of_PET_radiotracers
*  Nitrogen-13 - Wikipedia
Nitrogen-13 is a radioisotope of nitrogen used in positron emission tomography (PET). It has a half life of a little under ten ... Nitrogen-13 is used to tag ammonia molecules for PET myocardial perfusion imaging. 1H + 16O → 13N + 4He The proton must be ... Lightning may have a role in the production of Nitrogen-13. PET site of the University of Melbourne Phillips, A.C. (1994). The ... The gamma rays emitted in lightning have enough energy to knock a neutron out of atmospheric nitrogen Castelvecchi, Davide ( ...
  https://en.wikipedia.org/wiki/Nitrogen-13
*  Billingham Manufacturing Plant - Wikipedia
It fixates nitrogen, a highly energy-thirsty process, by converting it to ammonia via the Haber process, also known as the ... Tracerco was developed from this operation, and ICI's Physics and Radioisotope Services. The plant was sold by ICI to Terra ... The site was developed (copied) from knowledge of the ammonia plant at Oppau in Germany, and run as Synthetic Ammonia and ... It was initially known as the Government Nitrogen Factory - it fixated atmospheric nitrogen. Brunner Mond took over the works ...
  https://en.wikipedia.org/wiki/Billingham_Manufacturing_Plant
*  Isotopic labeling - Wikipedia
In soil science 15N tracers are used extensively to study nitrogen cycling, whereas 13C and 14C, stable and radioisotopes of ... Availability of urea to autotrophic ammonia-oxidizing bacteria as related to the fate of 14C- and 15N-labeled urea added to ... The recombinant would be expressed in E.coli with media containing 15N-ammonium chloride as a source of nitrogen. The resulting ... 2005) used dual labeled (15N- and 14C) urea to demonstrate utilization of the compound by ammonia oxidizers as both an energy ...
  https://en.wikipedia.org/wiki/Isotopic_labeling
*  Factor Vlla inhibitors - Aventis Pharma Deutschland GmbH
Preferably, the compound of the invention is labeled with, for example, a radioisotope, and the labeled compound is detected ... Such amide modifications, which can be effected upon the compounds of the invention, include those derived from ammonia, ... can contain an unsubstituted or substituted nitrogen atom or an oxygen atom or a sulfur atom in addition to the amide nitrogen ... of these groups can be bonded via any desired suitable position including suitable ring nitrogen atoms in the case of nitrogen ...
  http://www.freepatentsonline.com/6287794.html
*  Iridium - Wikipedia
Iridium is a good catalyst for the decomposition of hydrazine (into hot nitrogen and ammonia), and this is used in practice in ... Iridium radioisotopes are used in some radioisotope thermoelectric generators. Iridium is found in meteorites in much higher ... The radioisotope iridium-192 is one of the two most important sources of energy for use in industrial γ-radiography for non- ... At least 34 radioisotopes have also been synthesized, ranging in mass number from 164 to 199. 192Ir, which falls between the ...
  https://en.wikipedia.org/wiki/Iridium
*  Chapter 1. Digestion in Teleost Fishes
... which requires measuring the ammonia excreted by the gills (metabolic nitrogen). That equation should be: Some of the most ... Use of radioisotope-labeled lipids in cod suggested that the cod's lipase acted in the same manner as mammalian pancreatic ... In measuring protein nitrogen, one really should take the nitrogen from the deaminated amino acids into account, ... Smith and Lovell (1973) combined measurement of protein nitrogen with Cr2O3. Their equation was: An earlier author (cited by ...
  http://www.fao.org/docrep/X5738E/x5738e02.htm
*  Stirling engine - Wikipedia
Radio Isotope Power Systems for the New Frontier. Presentation to New Frontiers Program Pre-proposal Conference. 13 November ... However, oxygen can be removed from air through an oxidation reaction or bottled nitrogen can be used, which is nearly inert ... Other possible lighter-than-air gases include: methane, and ammonia. Applications of the Stirling engine range from heating and ... Some engines use air or nitrogen as the working fluid. These gases have much lower power density (which increases engine costs ...
  https://en.wikipedia.org/wiki/Stirling_engine
*  Dragonfly (spacecraft) - Wikipedia
The hot-air balloon would have used the heat from a radioisotope thermoelectric generator (RTG). NASA plans to select one of ... Evidence also indicates the presence of liquid water and ammonia under the surface, which are delivered to the surface by ... The atmosphere contains plentiful nitrogen and methane, and strong evidence indicates that liquid methane exists on the surface ... MMRTGs convert the heat from the natural decay of a radioisotope into electricity, although increased mass and surface area ...
  https://en.wikipedia.org/wiki/Dragonfly_(spacecraft)
*  Fluorine - Wikipedia
... due to the very strong triple bond in elemental nitrogen; ammonia may react explosively. Oxygen does not combine with fluorine ... Other radioisotopes have half-lives less than 70 seconds; most decay in less than half a second. The isotopes 17 F and 18 F ... Although nitrogen trifluoride is stable, nitrogen requires an electric discharge at elevated temperatures for reaction with ... Seventeen radioisotopes with mass numbers from 14 to 31 have been synthesized, of which 18 F is the most stable with a half- ...
  https://en.wikipedia.org/wiki/Fluorine
*  Population and the American Predicament: The Case Against Complacency | Negative Population Growth
The second class of pollutants, including long-lived general poisons such as pesticides, radioisotopes and heavy metals, was ... The environmental concentrations of ammonia, carbon monoxide, and hydrogen sulfide-all poisonous-are biologically controlled. ... 3 The cycling of essential plant nutrients such as nitrogen, phosphorus and sulfur is contingent at various stages on ...
  http://www.npg.org/library/recommended-reading/%3Ca%20href=%22index.php?p=3686%22%3EPopulation%20and%20the%20American%20Predicament:%20The%20Case%20Against%20Complacency%3C/a%3E
*  Modulation of electroneutral Na transport in sheep rumen epithelium by luminal ammonia | Gastrointestinal and Liver Physiology
... of the daily nitrogen intake is absorbed in the form of ammonia (45). ... Radioisotopes (22Na and 36Cl) were purchased from Amersham (Braunschweig Germany). All reagents were of analytical grade. ... Effect of Ammonia on Na and Cl Transport at pH 7.4. Increasing luminal ammonia concentrations in a CO2/HCO3−-free buffer at a ... Total ammonia flux in the mucosal-serosal direction at 30 mM ammonia in the luminal solution at pH 6.4 (0.07 mM NH3), 6.9 (0.27 ...
  http://ajpgi.physiology.org/content/289/3/G508
*  JoVE | Peer Reviewed Scientific Video Journal - Methods and Protocols
Radioisotope tracing is a major technique used to measure such fluxes, both within plants, and between plants and their ... Rhizobial bacteria form symbiotic, nitrogen-fixing nodules on the roots of compatible host legume plants. One of the most well- ... Environmental Sciences, Issue 90, influx, efflux, net flux, compartmental analysis, radiotracers, potassium, ammonia, ammonium ... Here, we describe two major radioisotope protocols used in plant biology: direct influx (DI) and compartmental analysis by ...
  https://www.jove.com/visualize/abstract/23977140/differences-competitive-ability-between-plants-from-nonnative-native
*  Myocardial perfusion imaging: state of the art
Nitrogen-13 ammonia, Rubidium-82 Chloride have proven to give such realistic results to have a sensitivity and specificity of ... which significantly reduce the time requested for acquisition and the dosage of radioisotopes to be administered. This latter ...
  https://www.escardio.org/Congresses-%26-Events/ESC-Congress/Congress-resources/Session-Reports/Reports-2010/Myocardial-perfusion-imaging-state-of-the-art
*  JoVE | Peer Reviewed Scientific Video Journal - Methods and Protocols
Radioisotope tracing is a major technique used to measure such fluxes, both within plants, and between plants and their ... Environmental Sciences, Issue 90, influx, efflux, net flux, compartmental analysis, radiotracers, potassium, ammonia, ammonium ... such as organic matter decomposition or nitrogen and phosphorus mineralization. Assays of extracellular enzyme activity in ... Here, we describe two major radioisotope protocols used in plant biology: direct influx (DI) and compartmental analysis by ...
  https://www.jove.com/visualize/abstract/24339935/site-distribution-at-edge-palaeolithic-world-nutritional-niche
*  JoVE | Peer Reviewed Scientific Video Journal - Methods and Protocols
Radioisotope tracing is a major technique used to measure such fluxes, both within plants, and between plants and their ... Rhizobial bacteria form symbiotic, nitrogen-fixing nodules on the roots of compatible host legume plants. One of the most well- ... Environmental Sciences, Issue 90, influx, efflux, net flux, compartmental analysis, radiotracers, potassium, ammonia, ammonium ... FACS of GFP lines have also been used to demonstrate cell-specific transcriptional regulation during root nitrogen responses ...
  https://www.jove.com/visualize/abstract/24853557/the-phytochrome-bphytochrome-c-heterodimer-is-necessary-for
*  Positron emission tomography - Wikipedia
As the radioisotope undergoes positron emission decay (also known as positive beta decay), it emits a positron, an antiparticle ... or ammonia, or into molecules that bind to receptors or other sites of drug action. Such labelled compounds are known as ... nitrogen-13 (~10 min), oxygen-15 (~2 min), fluorine-18 (~110 min), gallium-68 (~67 min), zirconium-89 (~78.41 hours), or ... BROWNELL G.L., Dave Marcum, B. HOOP JR., and D.E. BOHNING, "Quantitative dynamic studies using short-lived radioisotopes and ...
  https://en.wikipedia.org/wiki/Positron_emission_tomography
*  103ru 106ru 141ce: Topics by Science.gov
Nitrogen, ammonia, and nitrous oxide have been identified as the nitrogen-containing reaction products from the electrochemical ... The samples were cured and shipped to Babcock & Wilcox Technical Services Group-Radioisotope and Analytical Chemistry ... A comparison of methods for the estimation of the proportion of microbial nitrogen in duodenal digesta, and of correction for ... Intestinal digestibility of non-ammonia N was not significantly changed by cold exposure. 4. Transfer of urea from plasma to ...
  https://www.science.gov/topicpages/0-9/103ru+106ru+141ce.html
*  Molybdenum - Wikipedia
... nitrogen is reduced to ammonia and free hydrogen gas. This is an energy-using process, requiring the splitting (hydrolysis) of ... It is a parent radioisotope to the short-lived gamma-emitting daughter radioisotope technetium-99m, a nuclear isomer used in ... In bacterial nitrogen fixation, the nitrogenase enzyme involved in the terminal step of reducing molecular nitrogen usually ... Molybdenum-99 is a parent radioisotope of the daughter radioisotope technetium-99m, used in many medical procedures. The ...
  https://en.wikipedia.org/wiki/Molybdenum
*  Industrial gas - Wikipedia
Compound gases ammonia (NH3) carbon dioxide (CO2) carbon monoxide (CO) hydrogen chloride (HCl) nitrous oxide (N2O) nitrogen ... These elements are all primordial apart from the noble gas radon which is a trace radioisotope which occurs naturally since all ... In natural-gas processing, cryogenic technologies are used to remove nitrogen from natural gas in a Nitrogen Rejection Unit; a ... Air gases nitrogen (N2) oxygen (O2) argon (Ar) Noble gases helium (He) neon (Ne) argon (Ar) krypton (Kr) xenon (Xe) radon (Rn) ...
  https://en.wikipedia.org/wiki/Industrial_gas
*  Search Results - - 622 Results - Digital Library
Modifications of the films with hydroxyl and nitrogen was accomplished by dosing the condensed VTMS with water or ammonia ... As a precipitate forms in the presence of a radioisotope, adsorption may take place on its surface. If this adsorption changes ... Description: This thesis concerns the investigation of radioisotopes as indicators for precipitation reactions. ...
  https://digital.library.unt.edu/explore/partners/UNT/browse/?sort=title&
*  Cobalt - Wikipedia
There are 22 radioisotopes that have been characterized, the most stable being 60Co with a half-life of 5.2714 years, 57Co with ... It does not react with hydrogen gas (H2) or nitrogen gas (N2) even when heated, but it does react with boron, carbon, ... Using chelating ethylenediamine ligands in place of ammonia gives tris(ethylenediamine)cobalt(III) chloride ([Co(en)3]Cl3), ... Cobalt-57 (Co-57 or 57Co) is a cobalt radioisotope most often used in medical tests, as a radiolabel for vitamin B12 uptake, ...
  https://en.wikipedia.org/wiki/Cobalt
*  JoVE | Peer Reviewed Scientific Video Journal - Methods and Protocols
Radioisotope tracing is a major technique used to measure such fluxes, both within plants, and between plants and their ... We use full metabolic labeling of Arabidopsis thaliana suspension cell cultures with K15NO3 as the only nitrogen source for ... Environmental Sciences, Issue 90, influx, efflux, net flux, compartmental analysis, radiotracers, potassium, ammonia, ammonium ... Rhizobial bacteria form symbiotic, nitrogen-fixing nodules on the roots of compatible host legume plants. One of the most well- ...
  https://www.jove.com/visualize/abstract/25127399/benefit-shading-nurse-plant-does-not-change-along-stress-gradient
*  Radiation damage - Wikipedia
In reducing environments, ammonia may be formed. Ammonia ions may be however also subsequently oxidized to nitrates. Other ... Radioactive daughter products (radioisotopes) caused by the collision of cosmic rays with the atmosphere and other materials, ... Neutron activation of water leads to buildup of low concentrations of nitrogen species; due to the oxidizing effects of the ...
  https://en.wikipedia.org/wiki/Radiation_damage
*  Weapons of Mass Destruction, What You Should Know: A Citizen's Guide to Biological, Chemical, and Nuclear Agents and Weapons by...
Nitrogen Mustards (HN-1, HN-2, HN-3). 152. Sulfur Mustard (Yperite)-Mustard Gas (HD). 153. Phosgene Oxime (CX). 155. Choking/ ... Ammonia. 187. Paraquat. 191. Sodium Azide. 194. Personal Cleaning and Disposal of Contaminated Clothing. 198. Evacuation. 199. ... Radioactive Isotopes (Radioisotopes). 250. Americium - 241 (Am-241). 251. Celsium-137 (Cs-137). 251. Cobalt-60 (C0-60). 254. ...
  https://www.barnesandnoble.com/w/weapons-of-mass-destruction-what-you-should-know-gladson-i-nwanna/1114315728?ean=9781890605148