The discovery of high-frequency brightness oscillations in thermonuclear X-ray bursts from several neutron-star low-mass X-ray binaries has important implications for the beat frequency model of kilohertz quasi-periodic brightness oscillations, the propagation of nuclear burning, the structure of the subsurface magnetic fields in neutron stars, and the equation of state of high-density matter. ...

We study experimentally the free-space electro-magnetic field emitted from a multimode rectangular waveguide equipped with diagonal-horn antenna. Using frequency range of 215-580 GHz, photo-mixer is used to launch circularly-polarized field, exciting multiple modes at input via an A second used, together silicon mirror Fresnel scatterer, act as polarization-sensitive coherent detector character...

Abstract Aim Emergency appendectomy is one of the most common emergency procedures done. Negative rates vary and aim was to identify rate it at a DGH. Method Appendectomy cases small regional hospital were during 2-year period (2017-2018) included. Elective interval appendectomies excluded. Histopathology findings noted. Results 78 patient had an appendectomy, which 87% (n = 68) done laparoscop...