Abstract: A window system is proposed in which windows (41) which can be both locked and tilted mechanically are connected via microprocessors (43) to a monitoring center (49) which can display the locking and closure status of the individual windows (41) via visual display units (51, 57). The microprocessors (43) are located in the vicinity of the windows (41) and connected to the receiver (61) of a radio-controlled remote control unit by which the windows can be remotely controlled. The windows (41) can also be controlled via an operating unit (65) in the monitoring center (49). The remote control unit may involve either portable transmitters (63) or transmitters with a fixed location (67) which control the windows (41) via sensors (69) as a function of ambient air parameters, such as the relative air humidity, temperature or the CO.sub.2 content of the air in the room. The windows (41) have a locking drive integrated in the handle and a separate tilting drive.

Abstract: Undesirable heavy metal peroxides formed during the continuous partial oxidation of cadmium electrodes made from a charged strip of material, by means of H.sub.2 O.sub.2, to introduce a charge reserve prior to incorporation in a sealed alkaline battery cell, are removed by an immersion treatment in an alkaline hydroxide solution, with simultaneous desorption of oxygen and removal of the heat of hydrogenation. A subsequent boric acid immersion bath is used to neutralize introduced alkaline residues and to improve the stability of the strip during storage. The phenomena which accompany peroxide decomposition (intense evolution of heat and sputtering of electrolyte) in the completely assembled cell during the introduction of the electrolyte, and which interfere with the metering of the electrolyte, are thus avoided.