As described previously, cervical cancers are caused by infection with one of the high-risk HPV types. However, since not all people who are infected with HPV will develop cancer, it is likely that other factors also play a role in the development of cervical cancer.
ballast factor (BF) - The ratio of the light output of a fluorescent lamp or lamps operated on a ballast to the light output of the lamp(s) operated on a standard (reference) ballast. Ballast factor depends on both the ballast and the lamp type; a single ballast can have several ballast factors depending on lamp type. compact fluorescent lamp (CFL) - A family of single-ended fluorescent-discharge light sources with small-diameter [16-millimeter (5/8-inch) or less] tubes.
What is a 'Factor'. A factor is a financial intermediary that purchases receivables from a company. A factor is essentially a funding source that agrees to pay the company the value of the invoice less a discount for commission and fees. The factor advances most of the invoiced amount to the company immediately and the balance upon receipt of funds from the invoiced party.