Ceiling fan be used to reduce the stratification of warm air in a room by forcing it down to affect both occupants' sensations and thermostat readings, thereby improving climate control energy efficiency. Punkah-type ceiling fans date back to 500 BC, and are native to India. Unlike modern rotary fans, these punkah fans move air by moving to and fro, and were operated manually by cord. The first rotary ceiling fans appeared in the early 1860s and 1870s in the United States. At that time, they were not powered by any form of electric motor. Instead, a stream of running water was used,
Nasal reconstruction using a paramedian forehead flap angled flap was used during the first surgery, the second repair becomes more difficult. On one side the pedicle is destroyed and on the other side the forehead is scarred. This is another reason to use the unilateral paramedian forehead flap design. The donor defect after using a paramedian forehead flap is limited to the central-lateral forehead. The defect is closed as much as possible using a T-shaped scar. The adjoining tissues are pulled together vertically and horizontally. Often there is a persisting defect depending on the size of the flap. Any possible resultant defect is high in the forehead