The specific congeners of 17 2,3,7,8-substituted PCDDs/PCDFs, 12 dioxin-like PCBs (including non- ortho and mono- ortho PCBs), and six indicator PCBs (International Union of Pure and Applied Chemistry PCB congeners 138, 153, and 180) were analyzed by gas chromatography with high-resolution mass spectrometry (HP GC5890 Series II/VG-AutoSpec; Hewlett Packard, Bristol, UK).
Arguably, the tests represents a more pure indicator of the student's knowledge, as it is well known that course grades may be affected by various unobserved factors, including classroom behavior and teacher differences in grading routines.
The difference score B-A would minimize visuoperceptual and working memory demands, providing a relatively pure indicator of executive control abilities.
TMT B-A. was used in order to isolate the executive functioning component since it minimizes visuoperceptual and working memory demands, providing a relatively pure indicator of executive control abilities [ 37].
While analysts have expected profits to grow at a slower rate, they are now concerned about slowing revenue, which can be a purer indicator of economic health.
Among the 87 peripheral blood samples from patients with RA, thirteen were considered culture-positive for M. fermentans because they changed the colour indicator of the media and the pure culture was then identified by PCR (Additional file 2).
Our results indicate that the continuous measurement of inspiratory resistive work is a good indicator of both permeability and hydrostatic lung oedema, but not of pure alveolar oedema (absence of interstitial oedema).
