Duration of copyright: Works created but not published or copyrighted before January 1, 1978. (a) Copyright in a work created before January 1, 1978, but not theretofore in the public domain or copyrighted, subsists from January 1, 1978, and endures for the term provided by section 302.n no case, however, shall the term of copyright in such a work expire before December 31, 2002; and, if the work is published on or before December 31, 2002, the term of copyright shall not expire before December 31, 2047.
Menstrual cycle. Home Â» Menstrual cycle. Definition. noun. The reproductive cycle of human and other animal (e.g. certain primates) females, and is comprised of phases characterized by the changes in the ovarian follicles (i.e. ovarian cycle), as well as changes in the endometrial lining of the uterus (i.e. uterine cycle) Supplement.
How to Calculate Menstrual Cycle Length. Menstrual cycle length is the number of days your menstrual cycle lasts. It is not the same as period length, which is the number of days your period lasts. The day your period starts is considered Cycle Day (CD) 1 -- the start of a new menstrual cycle. Your average cycle length displays. 2  Each time you track your next period, your cycle length is updated! 3  Use My History/Quick History, or the Menstrual Cycle Chart, to see your average, shortest and longest menstrual cycle length.