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The peak expiratory flow (PEF), also called peak expiratory flow rate (PEFR) and peak flow measurement, [1] is a person's maximum speed of expiration, as measured with a peak flow meter, a small, hand-held device used to monitor a person's ability to breathe out air.
[20] Other supportive evidence includes: a ≥20% difference in peak expiratory flow rate on at least three days in a week for at least two weeks, a ≥20% improvement of peak flow following treatment with either salbutamol, inhaled corticosteroids or prednisone, or a ≥20% decrease in peak flow following exposure to a trigger. [100]
MMEF or MEF stands for maximal (mid-)expiratory flow and is the peak of expiratory flow as taken from the flow-volume curve and measured in liters per second. It should theoretically be identical to peak expiratory flow (PEF), which is, however, generally measured by a peak flow meter and given in liters per minute.
Discharge regime, [1] flow regime, or hydrological regime (commonly termed river regime, but that term is also used for other measurements) is the long-term pattern of annual changes to a stream's discharge at a particular point.
Lung volumes. Functional residual capacity (FRC) is the volume of air present in the lungs at the end of passive expiration. [1] At FRC, the opposing elastic recoil forces of the lungs and chest wall are in equilibrium and there is no exertion by the diaphragm or other respiratory muscles.
Due to seasonality and variability in billings quarter to quarter, we believe it is best to view free cash flow over a trailing 12-month period. On a trailing 12-month basis, free cash flow was ...
This free cash flow will support a strong and growing quarterly dividend, which we have increased by 310% since inception, as well as debt repayment, where we expect to pay down nearly $3 billion ...
Additionally, the release increased daily river flow variability, between 3 and 523 megalitres (660 × 10 ^ 3 and 115,040 × 10 ^ 3 imp gal; 790 × 10 ^ 3 and 138,160 × 10 ^ 3 US gal) per day, and the timing of flows was in keeping with natural events across the catchment. These small discharges saw a 20% increase in wetted habitat and a ...