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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.
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
The Dayton Air Force Depot personnel associated with the Air Force calibration program began their moves to the Heath Maintenance Annex in April 1962, and by June, most had been relocated to Heath, Ohio. In June, the name was also changed to the 2802nd Inertial Guidance and Calibration Group under HQ Air Force Logisitics Command.
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 ...
The basic formula for converting between ppm and mg/m 3 for gases is ppm = (mg/m^3) * 24.45 / molecular weight. This formula is not applicable to airborne particles. The four categories of TLVs for chemical substances are defined: Threshold limit value − time-weighted average (TLV-TWA): The average exposure on the basis of a 8 hours per day ...
The aircraft to be moved to Clark AB, Philippines under Thirteenth Air Force. [3] [6] In January 1964 the wing was re designated as the 3rd Tactical Fighter Wing, and was reassigned without personnel or equipment to England Air Force Base, Louisiana under Tactical Air Command.
[1] [2] It is usually given in units of becquerel per kilogram (Bq/kg), but another commonly used unit of specific activity is the curie per gram (Ci/g). In the context of radioactivity , activity or total activity (symbol A ) is a physical quantity defined as the number of radioactive transformations per second that occur in a particular ...
The speed to fly is the optimum speed through sinking or rising air mass to achieve either the furthest glide, or fastest average cross-country speed. [1] Most speed to fly setups use units of either airspeed in kilometers per hour (km/h) and climb rate in meters per second (m/s), or airspeed in knots (kn) and climb rate in feet per minute (ft ...