Here is The Hillâs look at who is most likely to claim the nomination next year. The race for the Republican presidential nomination is heating up, with the first GOP debate just three months away.
1 Circulation (journal), a journal published by the American Heart Association. 2  Library circulation, the activities around the lending of library books and other material to users of a lending library.  Magazine circulation, the average number of copies of a periodical distributed per edition/ volume.
Pulmonary circulation is the movement of blood though the right side of the heart, to the lungs, and then back through the left side of the heart. The âlub dubâ you hear when using a stethoscope is the sound of the ventricles contracting and the heart valves closing during this circulation process.