Look up: moderator

1. Moderator
   A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.
   Found on http://home.nas.net/~dbc/cic_hamilton/di
   
   
2. Moderator
   General term for materials used in nuclear reactors to reduce the energy (speed) of Fast Neutrons to that of Thermal (slow) Neutrons . The thermal neutrons are then able to interact and Fission with U-235.
   Found on http://www.ionactive.co.uk/glossary.html
   
   
3. moderator
   [n] - any substance used to slow down neutrons in nuclear reactors 2. [n] - someone who presides over a forum or debate 3. [n] - someone who mediates disputes and attempts to avoid violence
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. Moderator
   In a nuclear fission reactor, the moderator slows fast neutrons down. Slower moving neutrons are more effective at keeping the chain reaction going by causing more uranium nuclei to break apart. Each fission event releases fast neutrons - the moderator is therefore required to slow them down
   Found on http://www.users.zetnet.co.uk/computing/
   
   
5. Moderator
   the person who runs a conference or newsgroup - they have the responsibility of selecting which postings are used and which not
   Found on http://www.archivemag.co.uk/
   
   
6. Moderator
   A material used to slow down the neutrons in a nuclear reactor, thus increasing their chances of being obsorbed by a fissile material.Some of the materials used as moderators are:graphiteheavy waterwater
   Found on http://www.diracdelta.co.uk/science/sour
   
   
7. Moderator
   In the Church of Scotland, the minister chosen to act as president of the annual General Assembly. ...
   Found on http://www.encyclo.co.uk/local/20688
   
   
8. Moderator
   A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons by collision with lighter nuclei so as to expedite further fission
   Found on http://www.encyclo.co.uk/local/20725
   
   
9. Moderator
   A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons by collision with lighter nuclei so as to expedite further fission.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
10. Moderator
    A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons so as to expedite further fission.
    Found on http://www.theiet.org/factfiles/energy/n
    
    
11. moderator
    a material used to reduce,by scattering collisions and without appreciable capture,the kinetic energy of neutrons Category: Nuclear industry (with applied atomic and nuclear physics) • Person who presides over panel discussions and forums. Category: General • the person who p...
    Found on http://www.mijnwoordenboek.nl/definition
    
    
12. Moderator
    Mod'er·a`tor noun [ Latin : confer French modérateur .] 1. One who, or that which, moderates, restrains, or pacifies. Sir W. Raleigh. « Angling was . . . a moderator of passions.» Walton. 2. ...
    Found on http://www.encyclo.co.uk/webster/M/86
    
    
13. moderator
    noun someone who mediates disputes and attempts to avoid violence
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
14. moderator
    noun any substance used to slow down neutrons in nuclear reactors
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
15. Moderator
    • (n.) In the University of Oxford, an examiner for moderations; at Cambridge, the superintendant of examinations for degrees; at Dublin, either the first (senior) or second (junior) in rank in an examination for the degree of Bachelor of Arts. • (n.) A mechamical arrangement for regulatin...
    Found on http://thinkexist.com/dictionary/meaning
    
    
16. moderator
    (from the article `nuclear reactor`) ...12). Materials that contain atoms of this kind—water, heavy water, beryllium metal and oxide, and graphite—are deliberately incorporated into the ... Yttrium dihydride is used as a moderator in reactors to slow down neutrons. Certain rare earths are also used in shielding materials becau...
    Found on http://www.britannica.com/eb/a-z/m/106
    
    
17. moderator
    A person, or small group of people, who manages a moderated mailing list or Usenet newsgroup. Moderators are responsible for determining which email submissions are passed on to the list or newsgroup.
    Found on http://foldoc.org/moderator
    
    
18. Moderator
    A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons so as to expedite further fission.
    Found on http://www.encyclo.co.uk/local/21076
    
    
19. moderator
    The leader and main person responsible for an inspection or other review process....
    Found on http://www.imbus.de/glossar/
    
    
20. moderator
    material used to reduce, by scattering collisions and without appreciable capture, the kinetic energy of neutrons
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
21. moderator
    in a computer conference, a person who receives the proposed articles and may accept, modify, or reject them
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
22. Moderator
    In the Church of Scotland, the minister chosen to act as president of the annual General Assembly
    Found on http://www.talktalk.co.uk/reference/ency
    
    
23. moderator
    In a nuclear reactor, a material such as graphite or heavy water used to reduce the speed of high-energy neutrons. Neutrons produced by nuclear fission are fast-moving and must be slowed to initiate further fission so that nuclear energy continues to be released at a controlled rate. Slow neutrons are much more likely to cause fission in a ...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
24. Moderator
    A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.
    Found on http://www.chemistry-dictionary.com/defi
    
    
25. Moderator
    General term for materials used in nuclear reactors to reduce the energy (speed) of Fast Neutrons to that of Thermal (slow) Neutrons . The thermal neutrons are then able to interact and Fission with U-235.
    Found on http://www.ionactive.co.uk/glossary_atoz