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.
Menstruation is what most people call having your period.. The menstrual cycle is the time from the first day of one period to the first day of the next. A normal menstrual cycle can be as short as 21 days or longer than 35 days. For most women, it lasts 25 - 30 days.But it's common for your cycle to vary from month to month.t means that your body is healthy and normal. Most girls have their first period when they're between 9 and 15 years old. Your period may start around the time it started for other people in your family, like your mom or sisters.