Two-stream instability in pulsar magnetospheres generates longitudinal waves, which fall in the superluminal part of the dispersion curve due to stimulated scattering. A superluminal longitudinal wave propagating in a curved magnetic field turns into an electromagnetic wave and may escape from plasma in the form of an ordinary transverse wave. However, this wave may go to the subluminal part of...

Abstract Advanced research into non-destructive control of industrial pipeworks provides several acoustical methods for inspection of their structural integrity. Applying guided waves is one possible solution to detect and identify different flaws. Many studies have shown the importance of complex waves describing the interaction phenomena at the vicinity of the defects, modeled as geometrical ...

The coupled non–radiative excitations of the electromagnetic field and pha-sons in films with a quasi one–dimensional charge density wave (CDW) are evaluated for P–polarization and CDW conducting axis inside the film. The prominent features are two surface phason–polariton branches extending from the CDW pinning frequency to the frequency of the longitudinal optical phason. These surface phason...

The present article deals with the two parts: (i)The propagation of plane waves in a microstretch thermoelastic diffusion solid of infinite extent. (ii)The reflection and transmission of plane waves at a plane interface between inviscid fluid half-space and micropolar thermoelastic diffusion solid half-space.It is found that for two-dimensional model, there exist four coupled longitudinal waves...

On the basis of resonance theory the possibility of the longitudinal structures generation was fixed in the compressible boundary layer by an external vorticity. It takes place under a condition when parameters of externally vortex wave become the close to parameters of eigen stationary perturbations of a boundary layer. Researches are conducted as in case of subsonic numbers of the Mach, and i...

We have identified experimentally secondary instability mechanisms that restrict the stable band of wave numbers for ideal hexagons in Bénard-Marangoni convection. We use "thermal laser writing" to impose long wave perturbations of ideal hexagonal patterns as initial conditions and measure the growth rates of the perturbations. For epsilon=0.46 our results suggest a longitudinal phase instabili...

A sea wave energy harvester from the longitudinal wave motion of water particles is developed. The harvester consisting of a cantilever substrate attached by piezoelectric patches and a proof mass is used to collect electrical energy owing to the electromechanical coupling effect of the piezoelectric patches from the longitudinal wave motion. To the output charge and voltage from the piezoelect...

HRDI (High Resolution Doppler InterferometerUARS) winds data have been analyzed in 4-latitude by 10-longitude cells at 96 km to obtain the global distribution of the solar-tidal amplitudes and phases. The solstices June–July (1993), December–January (1993–1994), and one equinox (September–October, 1994) are analyzed. In an earlier paper (Manson et al., 2002b) the emphasis was solely upon the lo...

BACKGROUND The mechanisms underlying the possible contribution of chronic inflammation to the development of hypertension remain unclear. We examined the longitudinal association of inflammation with the progression of vascular and/or renal abnormalities in the development of hypertension. METHODS AND RESULTS In 3274 middle-aged Japanese men without hypertension at the study baseline, brachia...