Hardening of the arteries is a process that often occurs with aging. As you grow older, plaque buildup narrows your arteries and makes them stiffer. These changes make it harder for blood to flow through them. Clots may form in these narrowed arteries and block blood flow.
What Is The Purpose Of A Jib Crane. One of the most versatile and all-purpose cranes used in wide range of applications is without doubt a jib crane. Although small in size when compared to tower or crawler crane, jib crane is extremely powerful piece of lifting equipment. For the most part, jib cranes are affixed to a wall or a pillar and feature a horizontal boom (also called a jib), movable chain hoist, drum, wire ropes or chains.
Luffing jib boom tower cranes have a longer tradition than the now-common saddle-jib tower cranes (see âSuper-size Me,â CT July, pp. 29-32). The initial growth of large towers in the 1970s and 1980s came from massive investment in the power generation industry following the energy crises in the 1970s.