Abstract   Extended Oligopoly models will be introduced and examined in which the firms might face capacity limits, thresholds for minimal and maximal moves, and antitrust thresholds in the case of partial cooperation. Similar situation occurs when there is an additional cost of output adjustment, which is discontinuous at zero due to set-up costs. In these cases the payoff functions of the...

Mineral–fluid equilibria in supercritical geothermal reservoirs is poorly understood, due to the non-applicability of Helgeson–Kirkham–Flowers (HKF) electrostatic model for aqueous species low-density regions. We experimentally investigated dissolution albite–K-feldspar–quartz hydrothermal solutions at 400, 420 °C and 20–35 MPa, compared experimental results with thermodynamic calculations. The...

This Special Issue comprises a selection of the papers given at a two-day discussion meeting held at the University of Melbourne, Australia in June 2009 to celebrate Roger Powell s 60th birthday. At this milestone, it is fitting to review Roger s career to date. He has published 200 scientific papers on topics that range from lowto high-grade metamorphism, from lowto ultrahigh-pressure (UHP) me...