Positron
21positron — pozitronas statusas T sritis chemija apibrėžtis Elektrono antidalelė. atitikmenys: angl. positron rus. позитрон …
22Positron emission tomography — (PET) is a nuclear medicine imaging technique which produces a three dimensional image or map of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron emitting radionuclide (tracer), which is… …
23Positron Lifetime Spectroscopy — is a technique in material science used for studying the types and concentrations of atomic sized defects in materials. Positron Sources Typically positrons are produced through Beta Decay. A typical source would be 22Na, sodium 22. Positron… …
24Positron emission — is a type of beta decay, sometimes referred to as beta plus ( beta;+). In beta plus decay, a proton is converted, via the weak force, to a neutron, a positron (also known as the beta plus particle , the antimatter counterpart of an electron), and …
25Positron annihilation spectroscopy — (PAS) [Positrons in Solids, P. Hautojaervi, Topics in Current Physics 12 Springer Heidelberg 1979] or Positron lifetime spectroscopy is a non destructive spectroscopy technique to study voids and defects in solids.The technique relies on the fact …
26Positron Public Safety Systems — is a manufacturer of Enhanced 9 1 1 telephone systems as well as related public safety command and control equipment. They are based out of Montreal, Quebec, Canada, with regional offices in the United States.Positron Public Safety Systems is a… …
27positron-emission tomography — n tomography in which an in vivo, noninvasive, cross sectional image of regional metabolism is obtained by a usu. color coded cathode ray tube representation of the distribution of gamma radiation given off in the collision of electrons in cells… …
28Positron (City of Heroes) — Superherobox| caption=Positron, as appearing in a render released by NCSoft comic color=background:#8080ff character name=Positron real name=Doctor Raymond Keyes publisher=Image Comics debut= City of Heroes #1 creators=Matthew Miller alliance… …
29Positron (video game) — Infobox VG| title = Positron developer = Gary Partis publisher = Micro Power designer = Gary Partis engine = released = 1983 genre = Shoot em up modes = Single player ratings = platforms = Acorn Electron, BBC Micro media = Cassette requirements …
30Positron (disambiguation) — For uses of the word positron see: * Positron, the particle * Positron emission, the radioactive decay * Positron (video game), the 1983 video game published by Micro Power * Positron (City of Heroes), the comic/video game character * Positron!… …
