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.
A jib is  the forward most triangular sail on a ship. Luffing is a nautical term for when the sail flutters because it is pointed straight into the wind instead of catching it. A luffing jib also refers to a type of crane that is used in tight areas, usually in urban environments. This crane can operate so that its boom is able to be maneuvered in smaller areas so that neighboring property owners do not need to be contacted for permission to operate.