Branch Retinal Artery Occlusion - Pathophysiology. 1  Most commonly, a branch retinal artery occlusion occurs secondary to an embolus. Emboli typically originate within vessels upstream where they dislodge and travel within the circulatory system to ultimately become lodged downstream in a vessel with a smaller lumen.
Ragtime is a musical form or style that is defined as a syncopated melody (usually in 2/4 time) over a regular, march tempo bass line. Improvisation was common but little of that aspect has been preserved.
Scott Joplin (c. July 1867 and January 1868 â April 1, 1917) was an American composer and pianist. He achieved fame for his unique ragtime compositions, and was dubbed the King of Ragtime.. During his brief career, Joplin wrote 44 original ragtime pieces, one ragtime ballet, and two operas.One of his first pieces, the  Maple Leaf Rag , became ragtime's first and most influential hit, and has been recognized as the archetypal rag.uring his brief career, Joplin wrote 44 original ragtime pieces, one ragtime ballet, and two operas. One of his first pieces, the  Maple Leaf Rag , became ragtime's first and most influential hit, and has been recognized as the archetypal rag.