"Low-frequency media doesn't share as much as what we are good at," said Mr. Phillips.
Basic topics and approaches (theory and numerical simulations) on acoustic, electromagnetic, and elastic waves and fields for geophysical applications: dispersion, phase and group velocities, attenuation, reflection and transmission at planar interfaces, high frequency and low frequency approximations, heterogeneous media.
Special attention was paid to system properties that allow an operation at low frequencies in viscous media with high damping.
Due to the low attenuation of low frequency wave propagating in the porous media, the low-frequency vibration oil extraction technology has a large effective action radius when it is applied in the oilfield (White 1975).
This aspect expands the horizon of applicable communication methods to also include low speed (low-bandwidth) and intermittent communication schemes based on satellite or radio frequency media.
Quiescent VSMCs located in the media of undiseased arteries proliferate at a low frequency, and are arrested in the G(0)/G(1) phase of the cell cycle.
Cells in G2/M cells were of relatively low frequency, lowest in tissues maintained in physiological buffer, increased in media, and significantly increased after U46619 stimulation (Fig. 4).
In this paper, the potential of a low frequency acoustic technique for the study and characterisation of viscoelastic porous media is investigated.
Last week, several media outlets including Forbes.com ran with an alarming-if-true story that equated the low frequency radiation emitted by Wi-Fi equipment and cell phones with lead, chloroform, gasoline fumes, and the pesticide DDT.
Unfortunately, due to a low frequency of cryptococcosis, this species has, so far, been poorly represented in the clinical studies evaluating blood culture media.
Electrical power is low frequency -- 60 hertz or less.
