Abstract: A trading platform comprising a processor and tangible computer readable storage media. The platform may comprise instructions for receiving and processing orders and bids. The platform may store the bids and offers in a bid and offer order book. The platform may group the bids and offers based on price and notional value. The platform may redistribute groupings of bids and offers after a new bid or offer is received in the platform.

Abstract: A method for manufacturing a stable gelled fuel composition of diethylene glycol and fumed silica. Polyethylene glycol may also be added to improve burning. Previous related compositions (U.S. Pat. No. 5,264,003) provided methods of making a polymer hydrogel without chemical cross links. The modifications herein create optimal methods for mixing that enhance the range of applications. The gelation process is further modulated by controlling the air entraining of the resultant mixture producing a gellant complex while at the same time reducing the gelling media. The method includes the steps of providing a polymer solution of silicone dioxide (SiO2) wetted into diethylene glycol (DEG) in a first solution. The method further provides physically cross-linked hydrogels produced by controlled gelation of viscoelastic mixture wherein workability is maintained. In a further aspect, the invention provides methodology for mixing other forms of the gelation of polymer hydrogel solutions.

Abstract: A flexible covering for preventing the accumulation of dirt and debris inside an outdoor air conditioning condenser is provided. One edge of the covering is attached to the surface of the condenser. One or more flexible tethers connect an opposite end of the covering to the condenser such that the covering lifts from the top surface of the condenser due to the flow of exhaust when the condenser operates, and descends back onto the condenser over the exhaust opening when the condenser ceases operating. The covering prevents debris from entering the condenser, and the condenser can operate efficiently without prior removal of the covering.

Abstract: A stable gelled material used as a fuel which consists of a composition of diethylene glycol mixed with a gelling agent of fumed silica. Polyethylene glycol may also be added to improve its burning characteristics.