The standardization method proposed in this article permits characterization of isolates on the basis of band differences, regardless of DNA co-migration, thus increasing the discriminatory power (0.79 to 0.89) of PFGE by increasing band-associated information.
The phenol compounds contents in raw oil and light phase are determined by the standardization method of "Determination of the phenol content of washing oil".
Secondly, density of the fraction was measured under normal temperature, phenol compounds content in the fraction was determined by using the standardization method of "Determination of the phenol content of washing oil" GB/T24207 2009.
Because the standardization method is indirect, the comparisons are most relevant from a societal perspective but less so from an individual perspective.
They also established a trial-specific core laboratory to evaluate the effectiveness of these measures across the centers, and the standardization method was shown to be successful in obtaining quality images [ 10].
In order to assess the statistical relevance of the findings across two biological replicates, an adaptation of the standardization method proposed by Willems and coworkers was used [ 24]; this includes three basic steps: log transformation, mean centering and autoscalling.
The same standardization methods developed by the GAPS group (Seeb et al. 2007) were employed to standardize amplification, electrophoresis, allele nomenclature and scoring methods achieved between HMSC and the Abernathy Fish Technology Center AFTCC) laboratories.
But, the existing standardization methods are mainly applicable for flat terrains, which may become inappropriate under complex terrain conditions.
Some might argue that the reference population should have been the non-Aboriginal population of BC, but with the indirect standardization method, the comparison is between the observed number or rate in the population of interest (i.e., Aboriginal, a small population with unstable rates) and the expected number or rate in the reference population (a large population with stable rates).
For comparability to prior publications that reported standardized incidence and mortality ratios [ 2– 4], we used the indirect standardization method to estimate standardized mortality ratios (SMRs) comparing the observed with the expected number of deaths in the seven oil-producing cantons.
