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Technical Specifications Sampling Performance Sampling rate: 100 Hz Continuous real-time data acquisition Flow Measurement Range Approximate operating range: 0.15 15 L/min (compatible with cigarette, ECIG, heated tobacco, and waterpipe regimes) Measured Parameters Puff duration Puff volume Peak and mean flow rate Interpuff interval Session-level aggregate metrics Power Requirements USB-powered during standard operation 12 V external supply used for calibration procedures Physical Dimensions Instrument enclosure: 6.3 in 4.1 in 2.1 in External computer required for data recording and analysis Research Use Cases & Study Workflow eTop was developed for sustained laboratory research use, prioritizing measurement consistency across studies and product categories

We included how long before bed participants had their last joint, as cannabis is sometimes used for sleep initiation and this form of use may contribute to cannabis dependence 34

10 Doonesbury Was The Continuation Of Trudeau's College Newspaper Strip, Bull Tales Doonesbury first debuted in October of 1970 and was a continuation of Bull Tales , a strip Trudeau created while a Yale University student

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