source item
3.With the waste molasses as the sole carbon source and the amount of residual sugar and ethanol productivity selected as the screening item, two stable and high ethanol-producing Saccharomyces cerevisiae strains Z-B-4-M-88 and Z-S-B-M-33 were obtained. These two mutants possess high ethanolproducing activity and fast growing in the ethanol fermentation.
5.Thereby, in order to inspect the differences between item memory and source memory and also the relationship between these two kinds of memory, four ERP researches were conducted with pictures and Chinese characters as stimuli and with voice and location as different sources, and with undergraduates as subjects.

