While the Chinese may not have invented the abacus, we may have received the modern look of an abacus from China. The First Abacus As far back as the Sumarian culture in Mesopotamia (2700 â 2300 BCE), and possibly before, tools were used for counting.
Noun. 1. snare drum-a small drum with two heads and a snare stretched across the lower head. side drum, snare. drum, membranophone, tympan-a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end.
SNAREs are integral membrane proteins (v-SNAREs on vesicles, t-SNAREs on the target organelles) and are thought to provide specificity to the fusion process1â5. It has been suggested that Sec17p and SeclSp bind to v-SNARE/t-SNARE complexes and mediate the membrane fusion event1â3.