Traduction de «surface effective de filtration » (Français → Anglais) :

(d) on the external surface of any beam limiting device that adds filtration to the X-ray beam, the total permanent filtration deliverable by the beam limiting device, expressed in millimetres of aluminum equivalent at a specified X-ray tube voltage.

The surface to which this pressure is applied shall have the following dimensions, with the button in the actual release position and when projected into a plane perpendicular to the button’s initial direction of motion: for enclosed buttons, an area of not less than 4,5 cm2 and a width of not less than 15 mm; for non-enclosed buttons, an area of not less than 2,5 cm2 and a width of not less than 10 mm.

4. Nevertheless, the actual determination of the size of areas for an on-the-spot check may be limited to a sample of at least 50 % of the areas, provided that the sample guarantees a reliable and representative level of control in respect of area checked and support claimed.

When land is sealed, the area for soil to carry out its functions including the absorption of rainwater for infiltration and filtering is reduced.

If there are no traces of fat on the surface of the dish, quantitatively transfer, during the fourth washing, as much as possible of the sediment into the crucible.

P (st1) + P (st2) × 2 r (st) P (sample) = peak area of aflatoxin B1 for the sample P (st1) = peak area of aflatoxin B1 resulting from the preceeding injection of reference standard (3.13.3) P (st2) = peak area of aflatoxin B1 resulting from the following injection of reference standard (3.13.3) r (st) = injected amount of aflatoxin B1 in the reference standard (3.13.3) in ng Vm = volume of the injected sample extract in ml Ve x t = final volume of sample extract in ml, allowing for any dilution that was made (5.3) M = mass of sample in g Vf = volume of filtrate transferred to Florisil cartridge (5.4.1.2) in ml Vc = volume of chloroform, ...[+++]used for the extraction of the sample in ml If the procedure is followed as in this protocol, the formula reduces to: aflatoxin B1 content in mg/kg = 20 × m. 7.1. Calculations of the results may also be done by peak height measurement.