Abstract: A rotor bearing assembly for a wind power engine exhibits great stability and strength, and reduces flexural stresses on a mast of a wind power engine.The bearing body (2) is suspended from and mounted on a horizontal pivot axis (X) and carries a rotor assembly (3) on a short lever arm and an aerodynamic airfoil (5) on a log lever arm (4). In connection with a descending force, an airfoil (5) produces a counter torque about the horizontal pivot axis (X) opposed to the dynamic pressure-dependent torque due to the rotor assembly (3).

Abstract: A process for the selective separation of alkenes and/or alkynes from gases obtained by cracking of petroleum products comprising: (a) treating said gases containing at least one alkene and/or at least one alkyne with a macroporous strongly acidic cation exchange resin in its hydrogen form to selectively adsorb said at least one alkene and/or said at least one alkyne; and (b) introducing water, oxygen or an acid in vapor form to simultaneously desorb said at least one alkene and/or said at least one alkyne and to form at least one alcohol, aldehyde, oxide or ester.