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The present invention relates to semiconductor integrated circuits. More particularly, but not exclusively, the invention relates to strained channel complimentary metal oxide semiconductor (CMOS) transistor structures and fabrication methods thereof. There is provided a method of forming a strained channel transistor structure on a substrate, comprising the steps of: forming a source stressor recess comprising a deep source recess and a source extension recess; forming a drain stressor recess comprising a deep drain recess and a drain extension recess; and subsequently forming a source stressor in said source stressor recess and a drain stressor in said drain stressor recess. The deep source / drain and source / drain extension stressors are formed by an uninterrupted etch process and an uninterrupted epitaxy process.

Recumbent stacks of printed products are produced and strapped by supplying the printed products from above onto a conveying surface (2) where they are lined up in an upright position forming a continuously growing stack (6), separating discreet stacks (7) from the growing stack, stabilizing the discreet stacks with endplates (4), and conveying the stabilized stacks to a strapping position (12), in which a loop of strapping material is tightened around the stack (7). For conveying and strapping, the isolated stack (7) is gripped between two compression jaws (10, 11) that extend into the stack area (16) from a first side. In the strapping position (12), a strapping device (30) is situated on the side opposite the stack area (16). For strapping, at least part of the strapping device is moved horizontally in relation to the stack, and transverse to the stacking direction (S), thereby placing a loop of the strapping material around the stack. The loop is then tightened and closed around the stack and the compression jaws (10, 11) and the strapped stack is separated from the compression jaws by moving the stack (7) and the compression jaws (10, 11) relative to each other, horizontally and transverse to the stacking direction.

The internal combustion engine in a device has an oil reservoir (6) in the region of the crankcase (10) for containing oil. An oil detection device (12) is used to detect the oil present in the oil tank (6) and to generate a corresponding signal, which is evaluated by an evaluation device (13). Preferably, the oil level information is only generated when the internal combustion engine is started or within a certain period of time after starting the internal combustion engine. If the internal combustion engine has reached its operating speed, no further oil level monitoring takes place.