Both these effects reduce the workload of the heart, so beta blockers are of value in treating the symptoms of angina pectoris, the chest pain brought on by narrowing of the coronary arteries that causes inadequate delivery of oxygen-rich blood to the heart muscle.
3 1. The invention and the history of the Dell computer is quite interesting. First of all, it was in 1984 when Michael Dell, a student at the University of Texas at Austin, created the company PC's Limited. He only had a starting capital of $1,000.
Case study: DellâDistribution and supply chain innovation. In 1983, 18-year-old Michael Dell left college to work full-time for the company he founded as a freshman, providing hard-drive upgrades to corporate customers. In a yearâs time, Dellâs venture had $6 million in annual sales. In 1985, Dell changed his strategy to begin offering built-to-order computers.