A mobile bag filling system for filling bags with fluent matter, such as sand, and comprises a hopper, a flume, and first and second conveyor systems. A buried bit line is formed in a substrate and then a gate and a word line are formed over the substrate. Moreover, the present invention relates to a method of detecting and identifying the point mutation at the site corresponding to the 571-position of the base sequence in the cDNA translation region of Syrian hamster to judge whether or not it is a gene causative of hereditary cardiomyopathy. The two step process can be reversed to first extract lipids with the liquefied or supercritical gas, and subsequently use the solvent to extract the carotenoids. The use of fractional encoder counts provides a speed measurement with greater tolerance for variations in encoder dimensions and belt thickness.