Abstract. Frequency dependent electronic transport is investigated for a two-dimensional disordered system in the presence of a strong perpendicular static magnetic field. The acconductivity is calculated numerically from Kubo’s linear response theory using a recursive Green’s function technique. In the tail of the lowest Landau band, we find a linear frequency dependence for the imaginary part...

Vibrational spectra and normal modes of mechanically stable particle packings in three dimensions are analyzed over a range of compressions, from near the jamming transition, where the packings lose their rigidity, to far above it. At high frequency, the normal modes are localized at all compressions. At low frequency, the nature of the modes depends somewhat on compression. At large compressio...

associations of some hematological and lymphatic diseases with sex and abo and rh blood groups were studied in 2579 patients, compared with a control group of 126332 individuals, by the use of clinical as well as laboratory findings, in tehran. highly significant increase of male/female ratio is shown in acute myelogenous leukemia, acute lymphocytic leukemia, chronic lymphocytic leukemia, aplas...