collision

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Computers A garbled communication between 2 devices in a local area network (LAN) that results when both attempt to transmit data simultaneously; after colliding, each device waits for a period of time and retries; increased devices on a LAN increase the likelihood of collision
Obstetrics A mechanical obstruction to the birth of twins, such that the lay of one foetus impedes the engagement of the other; the most extreme collision is known as interlocking
Public health Road traffic accident/motor vehicle accident
Radiation physics The interaction between 2 particles—e.g., photons, atomic nuclei, electrons—during which energy, momentum, and charge may be altered

collision

Obstetrics A mechanical obstruction to the birth of twins, such that the lay of one fetus impedes the engagement of the other; the most extreme collision is known as interlocking, see there Public health Motor vehicle accident. See MVA.
References in periodicals archive ?
5]-5FoTHF 60 29 22 10 (m/z479 [right arrow] m/z327) THF (m/z 446 [right arrow] m/z 299) 81 27 20 10 (a) The general instrument settings used for LC/MS/MS detection and quantification of all four analytes in MRM were as follows: resolution, Q1 and Q3; unit dwell time, 200 ms; ion spray voltage, 5200 V; source temperature, 350 [degrees]C; curtain gas, 20 psi; gas 1, 20 psi; gas 2, 40 psi; collisionally activated dissociation gas, 4.
Although the chromatographic system used separates these two com pounds by >2 min, it is necessary to perform collisionally induced dissociation (CID) MS/MS experiments to clearly distinguish these compounds.
This dramatic change was responsible for our initial lack of recognition that the [beta]50-65 and [beta]53-65 peptides arose from collisionally induced fragmentation.