The low frequency cerebral blood flow velocity (CBFV) oscillations in neonates are commonly attributed to an under-dampened immature linear type cerebral autoregulation, and the 'instability' is regarded as causative for peri-intraventricular haemorrhage/periventricular leukomalacia. In contrast, oscillations susceptible to frequency entrainment are a fundamental part of the stable function of ...

To explain the low frequencies of quantum oscillations observed in lightly doped cuprates, we consider two-dimension Hubbard model supplemented with perpendicular magnetic field. For large repulsions, electron spectrum is investigated using cluster perturbation theory. Obtained at small deviations from half-filling are close to those experimentally, $F\approx500$~T. They stem Fermi surface pock...

Metals composed of weakly-coupled, stacked layers possess a Fermi surface that slightly varies in size along the stacking direction. This appears de Haas-van Alphen (dHvA) oscillations magnetisation with magnetic field as two close frequencies, corresponding to extremal cross-sectional areas. We show that, for layered materials sufficiently high mobility, Coulomb interactions can have dramatic ...

Recent measurements of young accreting binary neutron stars are determining more precise magnetic field and accretion parameters. A low magnetic field accreting, millisecond pulsar has finally been found in a binary burster. At least 20 low-mass binaries have exhibited high frequency oscillations, 300–1200 Hertz. The majority have, for some range of luminosity, the pair of quasiperiodic oscilla...