©FFPRHC J Fam Plann Reprod Health Care 2007: 33(2) Background My circle of friends, knowing that I work in what can only be called an ‘interesting’ profession, are rarely taken aback when I announce that I am going off to a conference about erectile dysfunction or researching a feature about loss of desire. But even they were taken aback when I mentioned that I was writing an article about sex ...

This paper focuses on the statistical properties of chaotic orbit ensembles evolved in triaxial generalisations of the Dehnen potential which have been proposed recently to model realistic ellipticals that have a strong density cusp and manifest significant deviations from axisymmetry. Allowance is made for a possible supermassive black hole, as well as low amplitude friction, noise, and period...

A design algorithm is derived, for a calculating minimum allowable electrical clearances in alternating and direct current “permissible” equipments, which are authorized to operate in gassy mines and tunnels under Part 18 of Title 30, Code of Federal Regulations [1]. The calculated clearances apply to operations at altitudes ranging up to 12 000 ft (3658 m) above sea level. The minimum allowabl...