A voltage-mode driver circuit supporting pre-emphasis is implemented to include a driver arm and a correction arm. The method induces a disturbance in the blood flowing in the venous line. Each tensioning arm contains a wear face that remains in constant slidable contact with the strand of chain to which it is adjacent. 05 to 5% by weight of a catalyst comprising copper and zinc and support material,D) from 0 to 40% by weight of an impact modifier,E) from 0 to 60% by weight of further additives,where the total of the percentages by weight of A) to E) is 100%. The locker bag apparatus is preferably made of pliable or soft material and is provided with a zipper configured to lock with a locking hook, preferably a locking wall pole or tree hook. A plurality of loop structures are attached to the toy helicopter.