Rf

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Rf

, RF
Symbol denoting movement of a substance in paper or thin layer chromatography relative to the solvent front (that is, retardation factor); equal to the migration distance of a substance divided by the migration distance of the solvent front.

RF


Rf

Abbreviation for rutherfordium.

QRFP

A gene on chromosome 9q34.12 that encodes an orexigenic neuropeptide which stimulates feeding behavior, metabolic rate and locomotor activity and increases blood pressure. QRFP may promote aldosterone secretion by the adrenal gland.

RF

1. Radiofrequency, see there.
2. Rate of flow.
3. Renal failure.
4. Respiratory failure.
5. Rheumatic fever.
6. Rheumatoid factor, see there.
References in periodicals archive ?
The initial parameters are established for a classical ADC configuration [11] with dimensions similar to those of the previous classical omnidirectional ADE antenna: [W.sub.A] = 10[lambda], [D.sub.M] = 24[lambda], [V.sub.S] = 10.7[lambda], [D.sub.B] = 2.4 [lambda], [z.sub.B] = 0, and [gamma] = 102[degrees].
The antennas proposed in this study have two different versions, where the first one possesses better omnidirectionality and axial ratio performances but narrow frequency bandwidth, and the second one has wider bandwidth but lower omnidirectional and axial ratio performances.
Omnidirectional vision systems have further advantages, comparing to conventional vision systems.
Then the inverse kinematics equation of z'th omnidirectional wheel is
The kinematic model of the three-wheeled omnidirectional mobile robot is described in [8] and is summarized by
Radially uniform omnidirectional metasurfaces will be considered first (Sections 2.1 and 2.2), for which the local surface impedance is independent of the radial coordinate [[Z.bar].sup.lin.sub.S] = [[Z.bar].sup.lin.sub.S]([k'.sub.t]).
Owing to the advantage of one-shot seamless panoramic imaging, catadioptric omnidirectional imaging systems consisting of conventional cameras and curved mirrors for capturing 360[degrees] field of view are widely used in many vision applications, such as aerial photographic reconnaissance, intelligent transportation system, robot navigation, surveillance, medical applications, and video conferencing [1-5].
We propose to extend this approach to an omnidirectional vision-based system for economic reasons.
However, in some special conditions, it is requisite for the antennas to have omnidirectional radiation patterns to cover a large service area, such as the portable access points or base stations.
Recently, it has been theoretically and experimentally demonstrated that an omnidirectional Bragg reflector can be realized using one dimensional (1D) photonic crystals.
We cite as examples of PC devices, resonant microcavities and omnidirectional mirrors which are precisely the subject of the present work.