quenching

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quenching

[′kwench·iŋ]
(atomic physics)
Phenomenon in which a very strong electric field, such as a crystal field, causes the orbit of an electron in an atom to precess rapidly so that the average magnetic moment associated with its orbital angular momentum is reduced to zero.
(electronics)
The process of terminating a discharge in a gas-filled radiation-counter tube by inhibiting reignition.
Reduction of the intensity of resonance radiation resulting from deexcitation of atoms, which would otherwise have emitted this radiation, in collisions with electrons or other atoms in a gas.
(engineering)
Shock cooling by immersing liquid or molten material into a cooling medium (liquid or gas); used in metallurgy, plastics forming, and petroleum refining.
(immunology)
An adaptation of immunofluorescence that uses two fluorochromes, one of which absorbs light emitted by the other; one fluorochrome labels that antigen, another the antibody, and the antigen-antibody complexes retain both; the initially emitted light is absorbed and so quenched by the second compound.
(mechanical engineering)
Rapid removal of excess heat from the combustion chamber of an automotive engine.
(solid-state physics)
Reduction in the intensity of sensitized luminescence radiation when energy migrating through a crystal by resonant transfer is dissipated in crystal defects or impurities rather than being reemitted as radiation.
References in periodicals archive ?
The quench system, called Easy-Flow, also developed by Lyco Manufacturing, maintains 100 percent uniform product cooling with less than one percent product damage.
Mr McCarthy insists First Quench was already talking to KPMG, who became its administrators, when it agreed to buy the franchise.
Some of the key features of Motorola Quench XT3 includes: a 3.2-inch HVGA (320 x 480 resolution) touch screen, 3-megapixel built-in camera, Qualcomm MSM 7227 600MHz processor, Wi-Fi 802.11b/g, GPS built-in receiver, 3.5mm headphone jack, Bluetooth connectivity, and microS card slot (up to 32GB).
First Quench, which also trades as Wine Rack, The Local, Haddows, Bottoms Up and Victoria Wine, fell into administration in October after struggling amid the recession.
First Quench originally operated around 1,200 stores as the Threshers, Wine Rack, The Local, Haddows, Bottoms Up and Victoria Wine brands, employing approximately 6,300 people.
First Quench operated around 1,200 stores and employed some 6,300 staff.
Richard Fleming, UK head of restructuring at KPMG and joint administrator of First Quench, is hoping to conclude the sale process by the end of the month, although it is unclear at this stage whether the firm and its brands will be kept largely intact or if KPMG will have to break up and sell the stores.
First Quench - which also trades as Wine Rack, The Local, Haddows, Bottoms Up and Victoria Wine - fell into administration last month after struggling amid the recession.
First Quench went into administration after cut-throat competition for drink sales from supermarkets.
"As part of the closure programme, liquidation sales will take place at each of the stores scheduled to be closed with the stock being sold off at a discount from Friday, November 6." First Quench has around 1,200 stores.
First Quench operates a total of 1,300 outlets and also owns convenience store chains The Local and Haddows.
We say that the solution u of (6)-(8) quenches in a finite time if there exists a finite time [T.sub.q] such that [[parallel]u(*,t)[parallel].sub.inf] = [min.sub.0][less than or equal to]x[less than or equal to]1] u(x,t).