low-frequency


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low-frequency

[′lō ‚frē·kwən·sē]
(communications)
A Federal Communications Commission designation for the band from 30 to 300 kilohertz in the radio spectrum. Abbreviated LF.
References in periodicals archive ?
The low-frequency waves then echoed across the region and produced protracted shaking.
The assay satisfies all of the lab's requirements for quantifying low-frequency mutations in circulating-free DNA, Romero added.
The human auditory system appears to be poorly adapted to the perception of low-frequency sound waves, as hearing thresholds become markedly higher for frequencies lower than about 250 Hz.
(3,4) In contrast, low-frequency US is delivered at frequencies in the range of 22 to 40 kHz.
Appropriate control of the two parameters [L.sub.1] and [L.sub.2] ensures that low-frequency operation fully covers the bandwidth required for LTE700 operation.
When this literature search was conducted, 16, 59, 40, 18, 20, and 3 articles using the "Infrasound AND Health Effects"; "Low-Frequency Noise AND Health Effects"; "Low-Frequency Sound AND Health Effects"; "Wind Power AND Noise"; "Wind Turbines"; and "Wind Turbines AND Noise" search terms were identified, respectively.
When heavily sedated, the brainwaves shifted, so the alpha and low-frequency waves peaked at the same time.
Results showed that the area of the postcentral gyrus cortex representing the face was about a quarter thicker in the high-frequency group, compared with the low-frequency group.
Doran Manufacturing introduces tire pressure sensors with low-frequency activation--a technological advancement for the Doran 360CE tire pressure monitoring systems for OTR tires.
M., Ibrahim, R., and Tarimala, s., 2010, "Mobilization of colloidal particles by low-frequency dynamics stress stimulation," J.
They cover coupling electromagnetic fields into biological systems; pulsed electric fields in biological cells and membranes; static, low-frequency, and pulsed magnetic fields in biological systems; the interaction of extremely low-frequency electromagnetic fields with biological systems; mobile communications fields; medical devices and systems exposure and dosimetry; and sources, applications, and biological effects of terahertz radiation.

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