Sinusitis makes people feel weak and sick, and besides the symptoms of a cold, they often have severe pain around the face. In this fact sheet we will inform you about the causes and symptoms of acute sinusitis, as well as the treatment options. What is sinusitis and what causes it? Sinusitis is an inflammation of the paranasal sinuses. The medical term is rhinosinusitis (rhino- meaning nose), because it affects the mucous membranes lining the nose and the sinuses. The paranasal sinuses are part of the upper airways, and are connected to the nasal cavity.
Units of power. The two most commonly used units of power in the United States customary units are mechanical horsepower and Btu/hour. The watt, an SI metric unit of power, is also widely used. The boiler horsepower is the rate of energy required to evaporate 34.5 lb (15.65 kg) of water at 212 Â°F (100 Â°C) in one hour. It is a rarely used unit.
Electrical power is the rate at which electrical energy is converted to another form, such as motion, heat, or an electromagnetic field. The common symbol for power is the uppercase letter P. The standard unit is the watt,symbolized by W. In utility circuits, the kilowatt (kW) is often specified instead;1 kW = 1000 W. One watt is the power resulting from an energy dissipation, conversion, or storage process equivalent to one joule per second. When expressed in watts, power is sometimes called wattage. The wattage in a direct current (DC) circuit is equal to the product of the voltage in volts and the current in amperes.