Abstract: A technique for controlling the combustion of fuel in a combustion boiler, comprising at least the following steps: a) a desired combustion air quantity for the combustion of the fuel in the combustion boiler is determined, b) a combustion air quantity which is available for the combustion of the fuel in the combustion boiler is determined, c) at least one combustion air inflow is controlled by at least one material output opening or at least one appliance opening in the combustion boiler, in order to at least partially match the combustion air quantity available in the combustion boiler to the desired combustion air quantity.

Abstract: A device (1) for separating packages (2) from a carrier belt with successively arranged blister bubbles (5), which is connected to a cover layer (9). The device has a receiving element (3) with cavities (4) or recesses to accept the blister bubbles (5) of a carrier belt section (6) and supports (7) located lateral as well as between the cavities (4) or recesses for the flat side of the blister edges. An impinging roller (10) is arranged with a drive for rolling on the cover layer (9) of the carrier belt section (6) arranged in the receiving element (3).

Abstract: A device for realizing a predetermined orientation of singularized work pieces being transported on a sliding surface by means of an air current that acts upon the work pieces. The air current has an effective direction that is inclined relative to the moving direction of the work pieces in such a way that an air current resulting from the effective air current and the air current caused by the movement of the work pieces extends perpendicular to the moving direction of the work pieces. Since the resulting air current acts upon the work piece perpendicularly, optimal force ratios are achieved on the work piece such that a reliable orientation of the work pieces is ensured.

Abstract: A device for realizing a predetermined orientation of singularized work pieces being transported on a sliding surface by means of an air current that acts upon the work pieces. The air current has an effective direction that is inclined relative to the moving direction of the work pieces in such a way that an air current resulting from the effective air current and the air current caused by the movement of the work pieces extends perpendicular to the moving direction of the work pieces. Since the resulting air current acts upon the work piece perpendicularly, optimal force ratios are achieved on the work piece such that a reliable orientation of the work pieces is ensured.

Abstract: A method for treating a subsurface formation with a ferrous compound, to reduce a contaminant therein, involves introducing into the subsurface formation a ferrous compound in combination with sodium hydrosulfite in an amount sufficient to substantially prevent precipitation, during the introducing, of a major portion of the ferrous compound. The method was found to be useful in the reduction of hexavalent chromium to trivalent chromium at a Superfund site.