The trilobal fiber generally results in more complex process than for circular fibers
. The tension of filament reaches a minimum near z = 50 cm.
In light of these structural and metabolic differences, it has been proposed that the superficial layers are active during respiration and slow jet-propelled swimming, whereas the central circular fibers
, presumed to be innervated by the giant axon system, power the jet-escape and rapid locomotion (Bone et al., 1995).
Presumably the small, Na-channel-rich fibers are central circular fibers
(3.3 [+ or -] 0.1 [[micro]meter] diameter, mean [+ or -] SEM based on unpublished electron microscopic analysis) associated with the giant axon system, but at present we have no direct evidence.
in this case, as proposed by Halpin and Tsai, parameter [Xi] = 2 was taken for the calculation of the transverse elastic modulus using circular fibers
. Results exceeding experimental stiffness values were obtained.
134 [degrees] C), there is a comparatively small degree of surface melting and the compaction pressure produces a cross section showing a somewhat irregular hexagonal network, where the original circular fibers
evidently deform by shear into irregular hexagons.