Hassan Dahir Aweys (Unknown to Unknown): Aweys is sometimes referred to as the spiritual leader of Al Shabaab, but his exact relationship with Al Shabaab is unclear. Aweys led the militant wing of an Islamist movement called Al Ittihad Al Islamiya (AIAI), which disbanded in 1997.
The generic term cooling tower is used to describe both direct (open circuit) and indirect (closed circuit) heat rejection equipment. While most think of a cooling tower as an open direct contact heat rejection device, the indirect cooling tower, sometimes referred to as a closed circuit cooling tower is nonetheless also a cooling tower.
Heating curves show how the temperature changes as a substance is heated up. Cooling curves are the opposite. They show how the temperature changes as a substance is cooled down. Just like heating curves, cooling curves have horizontal flat parts where the state changes from gas to liquid, or from liquid to solid. You are likely to have used salol or stearic acid in a school practical lesson to make your own cooling curve.