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 forehead and it closes by secondary healing. In spite of the fact that, as a result, the eyebrow could be distorted, this is usually avoided. As a result of a large initial defect, the flap has to be larger and the bigger the forehead defect will be. When there is a large resultant forehead defect it logically lies closer to the eyebrow. That is why there is a significant risk of superior eyebrow malposition, especially if a horizontal or oblique oriented forehead flap is used. Then the solution is to close the remaining defect with a skin graft. However a