A trie searching technique employs entries each including a pointer to the next block in the search and a status indication and also including start and end indexes which define a selected section of the trie key identifying an entry within the block identified by the pointer. The absorbent article has a liquid pervious topsheet, a liquid impervious backsheet, an absorbent core disposed between the topsheet and the backsheet, and a pair of outwardly convex longitudinal central channels formed at least in the central region. The new pump power is thus calculated very accurately and quickly according to a model that takes into account the actual gain value, the wavelength dependence of active channels, aging effects, and non-linear amplification effects. For application on turbomachines. The vertical wiring may be configured to be connected to an external device through a bottom surface of the at least one first via-hole or a top surface of the at least one second via-hole. The final step is immersing the polarizing cell in a magnetic field.