Knudsen-number dependence of two-dimensional single-mode Rayleigh-Taylor fluid instabilities.

We present a study of single-mode Rayleigh-Taylor instabilities with a modified direct simulation Monte Carlo (MDSMC) code in two dimensions. The MDSMC code is aimed to capture the dynamics of matter for a large range of Knudsen numbers within one approach. Our method combines the traditional Monte Carlo technique to efficiently propagate particles and the point-of-closest-approach method for high spatial resolution.

[Pelviscopic tubal coagulation].

1771 laparoscopic tubal sterilisations were analysed from 1972-1982 at the UFK Ulm. The control period extended to 1986. The median age was 35.