The term gigahertz, or GHz, refers to the operating speed of a central processing unit; hertz defines the clock rate, or cycles per second, of the CPU. 1 GHz is equivalent to one billion hertz. Businesses can increase the frequency of a processor to improve the speed of a computer through a process known as overclocking..
Purpose. Surfactant reduces the surface tension of fluid in the lungs and helps make the small air sacs in the lungs (alveoli) more stable. This keeps them from collapsing when an individual exhales.or example, if a drop of detergent is added to a drop of water, the detergent reduces the surface tension and the drop of water flattens out. In the lungs, surfactant reduces the surface tension and helps to maximize the surface area available for gas exchange.
Without normal pulmonary surfactant present, the attractive forces of the water will cause the alveoli to collapse. Pulmonary surfactant is a complex substance in the lungs which reduces the surface tension of water and therefore, prevents the collapse of the alveoli.Surfactant also plays a role in defending the lungs from bacteria and viruses.ackground. The surface of the tiny air sacs of the lungs (alveoli), where oxygen goes into the bloodstream and carbon dioxide comes out, is coated in a thin watery layer that contains water and pulmonary surfactant.