The Magnificent Seven

Figure 6. Log N - Log S distribution for close-by cooling INSs. Black symbols are plotted if the dimmest source at specified flux is one of the Magnificent seven . Otherwise we plot an opaque symbol (see the list of sources in Table 1). Two lines represent results of calculation. Dotted line - only stars from the galactic disc contribute to the Log N - Log S distribution. Solid line - contribution of the Gould Belt is added. RBS and BSC are two observational limits, obtained from the ROSAT data (RBS Schwope et al. 1999 BSC Rutledge et al. 2003). From Popov et al. (2003a).

Ishikawa (1985) presents seven common tools for SPC. He claims that 95% of quality-related problems can be resolved with these tools. The tools have been called the Magnificent Seven and are as follows ... 

The chapter is devoted to seven metals of antiquity gold, silver, copper, iron, tin, lead, and mercury—the magnificent seven of metals that played a tremendous role both in the development of civilization and in various schools of natural philosophy. We shall tell you about sulphur, which was widely used long before our time, and about carbon. It may well be that carbon is the oldest chemical element known to mankind. Therefore, we shall begin the history of chemical elements with carbon. 

Nassim Dali-Youcef, N., Lagouge, M, Froelich, S., Koehl, C. et al (2007) Sirtuins the magnificent seven, function, metabolism and longevity. Ann. Med., 39, 335-345. 

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