X-ray microtomography was used to image, at a resolution of 6.6 µm, the pore-scale arrangement of residual carbon dioxide ganglia in the pore-space of a carbonate rock at pressures and temperatures representative of typical formations used for CO2 storage. Chemical equilibrium between the CO2, brine and rock phases was maintained using a high pressure high temperature reactor, replicating condi...

Large number of contracted power exchanges among sellers and purchasers, in a deregulated market causes transmission line congestion. Congestion lines undermines the security economy networks. Flexible AC system (FACTS) devices are introduced at appropriate spots to change flow order keep within their capability. In this work, most commonly used unified controller (UPFC) is proposed for achieve...

The paper compares the IDEF0 [1], (sometimes referred to as SADT) and DSM (Design Structure Matrix) [2, 3] modelling techniques. They both serve the purpose of modelling information flows. The aim of the paper is to identify positive and negative aspects of the different modelling techniques, thereby suggesting what kind of problems the different techniques are best suited for and how the techn...