Background Insomnia symptoms are prevalent in older adults and linked to cardiovascular disease (CVD), but the role of ...

Abstract: The propagation properties of longitudinal dust acoustic waves (LDAWs) have been investigated in a ... The nonlinear dynamics of the system are shown to be governed by a modified KdV ...

High-power generation in backward-wave oscillators ... denotes the longitudinal wavenumber of the nth space harmonic, which is related to the angular frequency w and to the transverse wavenumber k ^ n ...

Objective To report on longitudinal tobacco product cessation rates ... hookah and smokeless tobacco. Generalised estimating equations were used to evaluate linear and nonlinear trends in cessation ...

Figure 1 An LPVCO with 10-octave (20 Hz to 20 kHz) tri-wave output comprises antilog pair Q1 and Q2, two-way current mirror ...

These types of waves are called longitudinal waves. In the diagram above the rope moves up and down but the energy is transferred along the rope from left to right, at 90° to the oscillation.

CPGs. Their model shows that cell-type-specific connectivity and a dominant inhibitory drive could underlie rhythm generation. Excitatory input could act to enhance the frequency range of these ...

By adapting mathematical techniques used in particle physics, researchers in Germany have developed an approach that could ...

Save guides, add subjects and pick up where you left off with your BBC account. A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a ...

Abstract: This article considers a system coupling an ordinary differential equation with a wave equation through its boundary data. The existence of a small parameter in the wave equation (as a ...