<reduction> In beta reduction, when a term containing a
free occurrence of a variable v is substituted into another
term where v is bound the free v becomes spuriously bound or
"captured". E.g.
( x . y . x y) y --> y . y y (WRONG)
This problem arises because two distinct variables have the
same name. The most common solution is to rename the bound
variable using alpha conversion:
( x . y' . x y') y --> y' . y y'
Another solution is to use de Bruijn notation.
Note that the argument expression, y, contained a {free
variable}. The whole expression above must therefore be
notionally contained within the body of some {lambda
abstraction} which binds y. If we never reduce inside the
body of a lambda abstraction (as in reduction to {weak head
normal form}) then namecapture cannot occur.
(1995-03-14)
Electron capture
PROCESS IN WHICH A PROTON-RICH NUCLIDE ABSORBS AN INNER ATOMIC ELECTRON
Epsilon decay; K-Capture; K-capture; EC decay; Electron capture decay; L-electron capture; K-electron capture; K capture; L capture; L-capture; Inverse-beta decay; Electron-capture; Electron Capture; K Capture; K Captures; Electron Captures; K-Electron Capture; K Electron Capture; K Electron Captures; K-Electron Captures
Electron capture (K-electron capture, also K-capture, or L-electron capture, L-capture) is a process in which the proton-rich nucleus of an electrically neutral atom absorbs an inner atomic electron, usually from the K or L electron shells. This process thereby changes a nuclear proton to a neutron and simultaneously causes the emission of an electron neutrino.
PROCESS OF CAPTURING AND STORING WASTE CARBON DIOXIDE FROM POINT SOURCES
Carbon dioxide capture and storage; Carbon Capture and Storage; Carbon capture and sequestration; CO2 capture and storage; CO₂ capture and storage; Geologic sequestration of CO2; CCS and climate change mitigation; User:LDabbas/sandbox; CCS and Climate Change Mitigation; Northern Lights (carbon capture project); CCUS; Carbon capture and storage in Canada
Carbon capture and storage (CCS) or carbon capture and sequestration is the process of capturing carbon dioxide (CO2) before it enters the atmosphere, transporting it, and storing it (carbon sequestration) for centuries or millennia. Usually the CO2 is captured from large point sources, such as a chemical plant or biomass power plant, and then stored in an underground geological formation.
In a radio receiver, the capture effect, or FM capture effect, is a phenomenon associated with FM reception in which only the stronger of two signals at, or near, the same frequency or channel will be demodulated.
1. Owen Gibson raises an eyebrow Monday July 11, 2005 The Guardian In the middle of the football transfer silly season, John Kampfner has just made a big name capture of his own.