The marketing plan needed to target a politically active portion of the population who mostly lacked any real contact with — or direct knowledge of — the reality of our schools. (thecrucialvoice.com)
Free testosterone comprises one to two percent of total testosterone and is considered a useful surrogate for the biologically active portion of circulating testosterone. (sciencedaily.com)
I think that's v relevant if you come to investing late, and have significant resources to invest — you could passively invest most of your portfolio, and then climb the learning curve far less painfully with the smaller active portion of your portfolio. (wexboy.wordpress.com)