摘要:
An system for monitoring alcohol in the breath of a test client confirms the identity of the test client based on spirometric data. The system includes a sample chamber receiving a breath sample, an alcohol sensor measuring the alcohol content of the breath sample, and a spirometric sensor generating spirometric data from the breath sample over the test client's entire exhalatory phase. A processor analyzes the spirometric data with stored client characterization data for a known client to confirm the identity of the test client. The client characterization data can be a probability density in a phase space in which at least two spirometric variables (e.g., flow and volume time-series data) are correlated.
摘要:
A method is provided for detecting broken rail, track continuity, and track occupancy ahead of or behind a railroad vehicle traveling in fixed-block territory equipped with an AC track code wayside signal system or cab signal overlay system, and a communications link. This method, when used as an integral part of a communications-based train control (CBTC) or positive train control (PTC) system, allows immediate, automatic detection of broken rail, track occupancies, or open turnouts ahead of or behind a train in an occupied block. It also facilitates true moving-block or virtual block CBTC or PTC, thereby enabling higher efficiency and track utilization.
摘要:
A support platform for an oil field pumping unit includes a frame supporting the oil field pumping unit, vertical helical piles, and diagonal helical piles. The vertical helical piles are driven into the ground beneath the frame to support the frame and oil field pumping unit. Each diagonal helical pile has an upper end secured to the frame and a lower portion extending diagonally downward from the frame with a helical blade threaded into the ground to restrain horizontal forces exerted by the oil field pumping unit.
摘要:
An open system provides breath-synchronized, flow-targeted ventilation to augment respiration by a self-breathing patient. A sensor detects a physical property of a patient's respiratory cycle. A processor monitors the sensor and controls a gas source to deliver oxygen-containing gas through a tube extending into the patient's airway with the flow rate varying over each respiratory cycle in a predetermined non-constant waveform synchronized with the respiratory cycle to augment the patient's spontaneous respiration. Gas is delivered at a flow rate sufficient to significantly mitigate the airway pressure the patient must generate during spontaneous breathing and thereby reduce the patient's work of breathing.
摘要:
A building system uses modular precast concrete components that include a series of columns with wide, integral capitals. Wide beam slabs are suspended between adjacent column capitals by hangers. Joist slabs (e.g., rib slabs or other substantially planar components) can then be suspended between the beam slabs and column capitals to provide a floor surface.