If we assume the indices of the sampling instants with Q(n T s )
v Φi, v Φma and v Φf are the hydrogen indexes of the sample, pure shale and drilling mud, respectively.
Shatter index of the sample was determined by subjecting it to a free fall from a constant height.
Where r3 and r4 are the reflectivities of the sample surfaces, n is the refractive index of the sample medium, and l3 is the sample thickness.
The patients' mean age was 48.6 years (SD = 9.6, min = 32.9, max = 64.6), and the mean body mass index of the sample was 29.7.
Therefore, it can be concluded that for the present work, which has a maximum particle volume concentration of 0.25 vol.%, the bias that may occur due to the variation in the refractive index of the sample is negligible.
In fact, the non-linear refractive index of the sample, when its thickness is smaller than the diffraction length of the focused beam, makes it to act as a thin lens with variable focal length.
Thus a three dimensional dataset (x,y,t) is obtained where the third dimension is time which, if the structure and refractive index of the sample are known, can be converted into depth.
Overall, the mean body mass index of the sample was 30.0 (se = 0.3).
The health status index of the sample was 79.4%, corresponding to 4 QUALY.
