Normalised resistance interpretation

Estimates of COwt for one species or closely related group can be made by visual examination of the distribution of the data obtained from testing a sufficient number of them (Miller and Reimschuessel, 2006). This method is subjective and is liable to be influenced by the existence of strains manifesting a low-level resistance that result in a small reduction in their susceptibility. A more sophisticated approach has been developed by Kronvall (2003) and used in aquaculture by Smith et al. (2007, 2009), Ruane et al. (2007), Douglas et al. (2007) and Avendano-Herrera et al. (2011).This approach, normalised resistance interpretation (NRl), relies on a statistical approach and has the added advantage that it is not influenced by the existence of strains with low-level resistance (Kronvall, 2003). Recently Kronvall (2010) has demonstrated that NRl can also be applied to MIC data. 

RUANE NM, DOUGLAS I, GEARY M, CARROLL C, FLEMING GTA and SMITH P (2007), AppUca-tion of normalised resistance interpretation to disc diffusion data on the susceptibility of Aeromonas salmonicida to three quinolone agents . Aquaculture, 272, 156-167. 

The resistivity behaviour for the sample with 8c(Feo.75810.25)2 is remarkable, since there is a negative slope in the temperature range from 4 K up to room temperature. The normalised resistivity curves (p(T)/p(295 K) vs. T) for the 8c(Feo.7581025)2 sample, together with the resistivity of the isostructural Co- and Ni-based compounds 8c(Coo.75810.25)2, and 8c(Nio 75810.25)2 are given in fig. 117. The residual resistivity for these compounds is of the order of 300-400 cm. This has been interpreted as a sign for a charge transfer... 

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