Assessment of littered cigarette butt in urban environment, using of new cigarette butt pollution index (CBPI)
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(5) where, H E is the, the sum of Annual Effective Dose for (U-238, Th-232, K-40) DL is the average Duration of Life (estimated to be 70 years) and RF is the risk factor (Sv 1 ), fatal cancer risk per Sievert
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Saliva Drug Testing Timeline Oral fluid drug testing collects a saliva sample from the oral cavity to detect drug metabolites left by recent drug use
With that mission accomplished, the company is liquidating the symbols of that era to fund and house Phase 2: ubiquitous autonomy