- A measure of the percentage of cells in a tumor that are in the phase of the cell cycle during which DNA is synthesized. The S-phase fraction may be used with the proliferative index to give a more complete understanding of how fast a tumor is growing.
English dictionary of cancer terms . 2015.
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phase modulation — noun A method of sending information by modifying (modulating) the difference in phase (fraction of a wave length) between a signal and a reference. See Also: phase modulator … Wiktionary
fraction — [ fraksjɔ̃ ] n. f. • 1187; « rupture » v. 1400; bas lat. fractio, de frangere « briser » I ♦ Liturg. La fraction du pain : action de rompre le pain eucharistique avant de communier. II ♦ 1 ♦ (1538) Math. Nombre rationnel, élément de l ensemble Q … Encyclopédie Universelle
Phase (waves) — Phase in waves is the fraction of a wave cycle which has elapsed relative to an arbitrary point. Contents 1 Formula 2 Phase shift 3 Phase difference … Wikipedia
Phase de la Lune — Phase lunaire En astronomie, une phase lunaire désigne une portion de Lune illuminée par le Soleil et vue à partir de la Terre. La Lune tournant en orbite autour de la Terre, les positions relatives du Soleil, de la Terre et de la Lune changent… … Wikipédia en Français
Phase fired controllers — Phase control (PFC), also called phase cutting, is a method of pulse width modulation (PWM) for power limiting, applied to AC voltages. It works by modulating a thyristor, SCR, triac, thyratron, or other such gated diode like devices into and out … Wikipedia
Phase-locked loop — PLL redirects here. For other uses, see PLL (disambiguation). A phase locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input reference signal. It is an electronic… … Wikipedia
phase — phaseless, adj. phasic, phaseal, adj. /fayz/, n., v., phased, phasing. n. 1. any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind. 2. a stage in a process of change or… … Universalium
Phase diagram — In physical chemistry, mineralogy, and materials science, a phase diagram is a type of graph used to show the equilibrium conditions between the thermodynamically distinct phases. In mathematics and physics, a phase diagram also has an… … Wikipedia
Phase detector — A phase detector is a frequency mixer or analog multiplier circuit that generates a voltage signal which represents the difference in phase between two signal inputs. It is an essential element of the phase locked loop (PLL).Detecting phase… … Wikipedia
Phase velocity — periodic gravity waves on the surface of deep water. The red dot moves with the phase velocity, and is located at a fixed wave phase: the crest for the case shown.The phase velocity (or phase speed) of a wave is the rate at which the phase of the … Wikipedia