This paper describes time-frequency analysis of the friction coefficient with discrete wavelet transform. Ball-on-disk experiments were conducted with a steel ball. an aluminum disk and ethanol as a lubricant. The coefficient of friction was rather stable and low during initial sliding before it suddenly increased by seizure caused by loss of the lubricant. https://www.getpureroutine.com/super-find-caruso-s-milk-thistle-60-tablets-online-great-price/