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3 H 4 O 2) n or [–C(CH 3)HC(=O)O–] n. PLA is formally obtained by condensation of lactic acid C(CH 3)(OH)HCOOH with loss of water (hence its name). It can also be prepared by ring-opening polymerization of lactide [–C(CH 3)HC(=O)O–] 2, the cyclic dimer of the basic repeating unit. Often PLA is blended with other polymers.
The 1981 design was the most widely used plate number design, in production from 1981 to 2014. LTO issued the numbering format LLL-DDD for automobile vehicles, and LL-DDDD and DDDD-LL for motorcycles. Color-coded year stickers appeared in 1982, based on the license plate's color scheme. Stickers for vehicle classification appeared in the same year.
Nevada issues three letter and three number plates vehicles sold through dealers that require a new plate. Tennessee issues three number and four letter plates for the "In God We Trust" plate. Indiana plates are randomly issued with combinations of 3 numbers and either 1, 2, or 3 letters, while all "In God We Trust" plates have 3 letters and 3 ...
Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
AH-2 – 155 mm towed howitzer. Export version of the PLL-01 howitzer. AH-1 – 155 mm towed howitzer. Export version of the PLL-01 howitzer at 52 caliber. FGT-203 – 203 mm towed howitzer. Experimental design based on PLL-01. This artillery system was developed by Norinco in cooperation with Space Research International of Belgium. [61]
For example, a PLA 1 enzyme with a long lid domain (22-23 amino acids) and a long B9 domain (18-19 amino acids) constitute an extracellular PLA 1 exhibiting triacylglycerol hydrolase activity. [13] In contrast, a PLA 1 enzyme that is considered more selective will have a short lid and B9 domain that span 7-12 and 12-13 amino acids, respectively.
PLGA is synthesized by means of ring-opening co-polymerization of two different monomers, the cyclic dimers (1,4-dioxane-2,5-diones) of glycolic acid and lactic acid. Polymers can be synthesized as either random or block copolymers thereby imparting additional polymer properties.
This strip from a sheet of US stamps from 1895 shows they were printed with plate number 170. A plate number is a number printed in the margin of a sheet or roll of postage stamps, or on the stamp itself, which shows the printing plate used to print the stamps. A plate number is the serial number of a printing plate.