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0.1 × ( 12 ÷ 8 ) = 0.15 grain per dscf when corrected to a gas having a specified reference CO 2 content of 12 volume %. Notes: Although ppmv and grains per dscf have been used in the above examples, concentrations such as ppbv (i.e., parts per billion by volume), volume percent, grams per dscm and many others may also be used.
= 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
kilogram per cubic metre (SI unit) kg/m 3: ≡ kg/m 3 = 1 kg/m 3: kilogram per litre kg/L ≡ kg/L = 1000 kg/m 3: ounce (avoirdupois) per cubic foot oz/ft 3: ≡ oz/ft 3: ≈ 1.001 153 961 kg/m 3: ounce (avoirdupois) per cubic inch oz/in 3: ≡ oz/in 3: ≈ 1.729 994 044 × 10 3 kg/m 3: ounce (avoirdupois) per gallon (imperial) oz/gal ≡ oz ...
It is added to JP-8 at a ratio of 256 ppm to create JP-8+100, at an added cost of $5 per 1000 gallons of fuel. [14] Commercially, this additive is used in police helicopters in Tampa, Florida. [citation needed] JP-8+100 is also used for Canadian Forces CP-140 Aurora, CC-130 Hercules, CF-18 Hornet and the CC-115 Buffalo.
O 3 and NO 2 are measured in parts per billion (ppb) while PM2.5 is measured in micrograms per cubic metre (μg/m 3). The AQHI is calculated on a community basis (each community may have one or more monitoring stations).
2 mg/kg 2 parts per million 2 ppm 2 × 10 −6: A mass fraction of... 2 μg/kg 2 parts per billion ! 2 ppb ! 2 × 10 −9: A mass fraction of... 2 ng/kg 2 parts per trillion ! 2 ppt ! 2 × 10 −12: A mass fraction of... 2 pg/kg 2 parts per quadrillion ! 2 ppq ! 2 × 10 −15: A volume fraction of... 5.2 μL/L 5.2 parts per million 5.2 ppm 5.2 ...
It provides guidance, analytical support, and quantitative risk analyses to 11 major commands and the Air Force corporate staff on development of cost per flying-hour factors and resource requirements. AFCAA performs special studies supporting long-range planning, force structure, Analysis of Alternatives, and life-cycle cost analyses. [1]
According to the Food and Agriculture Organization (FAO), a division of the United Nations, the worldwide maximum tolerated levels of aflatoxin B 1 was reported to be in the range of 1–20 μg/kg (or .001 ppm - 1 part-per-billion) in food, and 5–50 μg/kg (.005 ppm) in dietary cattle feed in 2003.