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 dynamic fluorescence quenching comes from the crash between enzymes and inhibitors [21].
High concentrations of [Cu.sup.2+] were required for high fluorescence quenching efficiency at high concentrations of AuNCs-BSA, which means low detection sensitivity for GSH.
Based on these, we have used YOYO to DNA-phosphate ratio of 1:2000 for acrylamide fluorescence quenching experiments described later (Figure 10).
Caption: FIGURE 3: Fluorescence quenching in B with the addition of TNP alone and TNP in the presence of other analytes.
Consequently, the type of fluorescence quenching of the hPPAR[gamma] protein induced by DBDF2,6T was preliminary defined as a kind of static quenching [24].
ANS Fluorescence Quenching Determines the Affinity of the Hits in the Ligand Binding Pocket of PPAR[beta]/[delta].
Caption: FIGURE 3: Fluorescence quenching behavior of CDs after the addition of various concentrations (5 x [10.sup.-9] mol x [L.sup.-1] to 4 x [10.sup.-7] mol x [L.sup.-1]) of pamidronate disodium (A-I (a)) and the addition of various concentrations (6 x [10.sup.-9] mol x [L.sup.-1] to 8 x [10.sup.-7] mol x [L.sup.-1]) of zoledronic acid (A-G (c)).
Yu et al., "Antigen detection based on background fluorescence quenching immunochromatographic assay," Analytica Chimica Acta, vol.
We also measured intracellular iron, which was indirectly measured by calcein fluorescence quenching, to ascertain whether decreased expression of hepcidin and increased expression of Fpn1 reduced intracellular iron levels.
The binding of several flavonoids to PDIA3 and their effects on the protein were tested by protein fluorescence quenching and differential scanning fluorimetry.
To analyze the mechanism (static or dynamic) of fluorescence quenching the Stern-Volmer equation (2) can be used

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