Abstract: Actuation assembly for a trailing edge flap of an aircraft wing, comprising: a base unit configured to be fixated to a main body of the aircraft wing; an intermediate unit movably connected to the base unit and configured to be hingeably connected to the flap at a leading edge of the flap about a first hinging axis extending along the leading edge of the flap, wherein the movability provides adjustability of the flap between a retracted flap position and an extended flap position; and a second actuator configured to controllably rotate the flap with respect to the intermediate unit about the first hinging axis, the second actuator being configured to be movable along with the intermediate unit with respect to the at least one base unit.

Abstract: The invention provides a method for the oxidation of carbohydrates with periodate in an aqueous medium, with which method a less than equivalent amount of periodate is used and the periodate is regenerated during the reaction in a separate reaction chamber. The periodate is preferably regenerated electrochemically. The oxidation leads to dialdehyde carbohydrates in which advantageously 30-85% of the available diol groups are oxidized to dialdehyde groups.