Add punctuation: In a chronic oral rat study was found a NOAEL of 462 mgkg bwday cf Lijinski and Kovatch 1986 above
A: In a chronic oral rat study was found a NOAEL of 462 mg/kg bw/day (cf. Lijinski and Kovatch 1986 above).

Add punctuation: He can try to avoid mental shortcircuits
A: He can try to avoid mental short-circuits.

Add punctuation: Pay attention to tension in the wood
A:
Pay attention to tension in the wood.