Abstract: An internal combustion engine having: at least one piston-cylinder unit, a turbocharger having an exhaust gas turbine, a catalytic converter connected between the at least one piston-cylinder unit and the exhaust gas turbine, and a control device, wherein the control device is designed to control a fluid-delivery device such that, when the internal combustion engine is in a state in which no combustion and/or ignition takes place in the at least one piston-cylinder unit, the fluid-delivery device delivers fuel-air mixture through the catalytic converter.

Abstract: An internal combustion engine is provided, which includes at least one combustion chamber, and a turbocharger with an exhaust gas turbine and an exhaust gas after-treatment device. The exhaust gas after-treatment device has a first catalytic converter arranged aerodynamically between the at least one combustion chamber and the exhaust gas turbine. A second catalytic converter is arranged aerodynamically between the first catalytic converter and the exhaust gas turbine, and at least one partial oxidation chamber is arranged aerodynamically between the first catalytic converter and the second catalytic converter. Also provided is a method for reducing exhaust gas emissions of an internal combustion engine.

Abstract: A catalytic converter device for a stationary internal combustion engine includes at least one bracket for mounting the catalytic converter device on a carrier, and at least one catalyst substrate which can be releasably arranged in a housing of the catalytic converter device, the catalyst substrate having a cell density of at least 50 cpsi, preferably greater than 100 cpsi.

Abstract: An interactive information system is indicated for an aircraft to provide passengers with information, which access both an onboard data storage device and an off-board data storage device. A computer uses the onboard and off-board data to compute informative data, which are then visualized to the passenger. The passenger can interactively determine the form and type of data generation and preparation at any time.

Abstract: The invention concerns a method for purifying biological macromolecules, e.g. nucleic acids or proteins, from starting materials, in which the macromolecules, contained in a biological solution, are purified on a chromatographic material, and in which endotoxins are partially or completely removed with the aid of a nonionic surfactant, which is characterized in that the surfactant and the biological solution are brought into contact immediately before or during the purification of the macromolecules on the chromatographic material.

Abstract: Disclosed is an apparatus for isolating nucleic acids having a separation column which has a top inlet and a bottom outlet in which a separation device is arranged, and having a collection vessel for collecting liquid emerging from the outlet. The ratio between the internal volume of the separation column above the separation device and the surface area of the separation device is at least 10 ml/cm2.

Abstract: The output of an operational amplifier is connected to a bridge having as its diagonal two push-pull, complementary-symmetry, output stages, the servo motor being connected between the emitters junction of the one stage and the emitters junction of the other stage.