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.
Home / DC Circuits / Electrical Units of Measure Electrical Units of Measure The standard SI units used for the measurement of voltage, current and resistance are the Volt [ V ], Ampere [ A ] and Ohm [ Î© ] respectively. Sometimes in electrical or electronic circuits and systems it is necessary to use multiples or sub-multiples (fractions) of these standard units when the quantities being measured are very large or very small. The following table gives a list of some of the standard electrical units of measure used in electrical formulas and component values. There is a huge range of values encountered in electrical and electronic engineering between a maximum value and a minimum value of a standard electrical unit. For example, resistance can be lower than 0.01Î©âs or higher than 1,000,000Î©âs.