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  2. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    mg/m 3 = milligrams of pollutant per cubic meter of air at sea level atmospheric pressure and T: ppmv = air pollutant concentration, in parts per million by volume T = ambient temperature in K = 273. + °C 0.082057338 = Universal gas constant in L atm mol −1 K −1: M = molecular mass (or molecular weight) of the air pollutant

  3. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).

  4. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    Here are the conversion factors for those various expressions of wind speed: 1 m/s = 2.237 statute mile/h = 1.944 knots 1 knot = 1.151 statute mile/h = 0.514 m/s 1 statute mile/h = 0.869 knots = 0.447 m/s. Note: 1 statute mile = 5,280 feet = 1,609 meters

  5. Density - Wikipedia

    en.wikipedia.org/wiki/Density

    kilogram per cubic decimetre (kg/dm 3) gram per cubic centimetre (g/cm 3) 1 g/cm 3 = 1000 kg/m 3; megagram (metric ton) per cubic metre (Mg/m 3) In US customary units density can be stated in: Avoirdupois ounce per cubic inch (1 g/cm 3 ≈ 0.578036672 oz/cu in) Avoirdupois ounce per fluid ounce (1 g/cm 3 ≈ 1.04317556 oz/US fl oz = 1.04317556 ...

  6. Compressed air dryer - Wikipedia

    en.wikipedia.org/wiki/Compressed_air_dryer

    In the table above, the LOCATION means where the Coalescing Filter is relative to Refrigerated Air Dryer. 1 mg/m3 is a weight of oil in a volume of air and is approximately equal to 0.83 ppm by weight. [11] High temperature dryers are equipped with an additional pre-cooler that removes excess heat via a forced air system.

  7. Trump threatens to demand ownership of Panama Canal ‘in full’

    www.aol.com/trump-threatens-demand-ownership...

    President-elect Trump called out the nation of Panama for the “exorbitant” fees it charges the United States — and threatened to demand control of the key commerce node.

  8. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.

  9. What is a Green Beret? What to know after suspect died ... - AOL

    www.aol.com/news/green-beret-know-suspect-died...

    The decision to use green berets comes from wanting to distinguish themselves from conventional Army forces. According to the Army Times, headwear used by soldiers in France inspired the berets ...