Portland cement concrete (M30) was used as a reference sample.
The variant was detected during analysis of a reference sample throughout a paternity exclusion case.
Results are expressed as a ratio of the optical density of the test sample over that of a reference sample (cut-off for positivity is 1.1).
Before the measurements, the nanoindenter was calibrated against a reference sample that was fused silica in our case, as suggested by the machine supplier.
These measurements were performed in two fractured samples and in a reference sample, which exhibited a small intrinsic anisotropy.
The inhibitor had similar molecular weight (21 kDa) as a human recombinant TIMP-2 used as a reference sample.
A method to compensate this effect is to normalize the actual wear coefficient with a reference sample.
The surface properties of PFPE and PDMS (used as a reference) samples were studied by static contact angle measurements and AFM imaging.
By comparison with a reference samples, the re-measurements obtained should more accurately characterize the dynamics of the land conditions.
Here we report the measurements of fluorescence quantum efficiency, η, obtained through the thermal lens technique using a reference sample.
