Sentences with phrase «years on a rotational basis»

There are more than 60 different kinds of dietary supplements, creams and ointments, as well as herbal and homeopathic medicines taken for years on a rotational basis.

Not exact matches

With a fairly long rotational period of 48 days compared with Sol that is suggestive of greater age (Noyes et al, 1984), 54 Piscium has been estimated to be from 5.1 to 8.2 +4.3 / -5.2 billion years old based on chromospheric activity and isochronal analysis (Luhman et al, 2006; Saffe et al, 2005; Valenti and Fischer, 2005; and Wright et al, 2004).

In 2010, a new study (which included better model atmosphere fitting) argued that the system is around six billion years old, even older than estimates of 3.7 to 4.3 billion years derived from a 2009 study based on mass and evolutionary models for the two brown dwarf companions Ba and Bb (Liu et al, 2010; and King et al, 2009), which are much older than an earlier age estimate of between 0.8 and 2.0 billion years based on the star's rotational speed (press release; Scholz et al, 2003; and Lachaume et al, 1999).

Based on chromospheric activity and rotational period alone, both stars may be around 2.9 and 5.8 billion years old (Mamajek et al, 2008, Table 13).