The umbilical coiling index was defined as the reciprocal of the length of one complete coil measured in a longitudinal section of the umbilical cord.
Owing to the high resolution of the multi-coil measuring probe, it is possible to detect not only cuts of individual cords but also broken wires in the cords, and even the corrosion of cords in the core.
For these cases, the device had three tapering distal coils measuring 5, 4, and 3 mm in diameter.
In our institution, Spirale platinum embolization coils measuring between 8 and 16 mm in unconstrained diameters (BALT Extrusion, Montmorency, France) were initially used.
The resonant frequency of the fabricated coils measured using an impedance analyzer is identical for each coil type.
The coiled-coil segments are around 20 25 nm long that is similar to the persistence length of a coiled-coil measured by atomic force microscopy, i.e. 25 nm [26].
The polar filament coils measured 83.3 102 nm.
The tetramer provides a length of 20 nm between the extremes of its C-terminal coiled-coils (measured at 196.1 and 199.9 Å between Gln220 Cα atoms of chains A and B, and chains C and D, respectively).
In this manner, the TA10 binding region could be narrowed further to a single coiled coil domain measuring 9kDa (fragment "a" in Figure 5C).
In order to study the evolution of coiled-coils, we measured the amino acid frequencies and substitution rates in coiled-coil domains from a collection of over 2,000 orthologous groups of metazoan proteins (see above).
We have to test (and reject) each batch for its magnetic saturation by inserting it in a coil and measuring the resultant current flow, selecting only the batch with high permeability in high magnetic fields.
