The data to encode is split in half and encoded as a split-level barcode, and this format is used if the width of the barcode is an issue. 1  The height of the top row of the GS1 DataBar Stacked barcode is 5 times the X dimension, and the height of the bottom row is 7 times the X dimension. 2  Fig.
Pitting resistance equivalent number (PREN) is a predictive measurement of the corrosion resistance of various types of stainless steel. In general: the higher PREN-value, the more corrosion resistant the steel. Steels with PREN-values above 32 are considered seawater (corrosion) resistant.
PRN is an abbreviation that comes from the Latin term pro re nata.. Its actual translation to English is for the thing born, but its common medical meaning is as needed.. It used to identify a medication that can be taken as the patient needs it rather than on a fixed schedule.