منابع مشابه
A miniature Wright peak-flow meter.
A new miniature Wright peak-flow meter has been designed and produced. The meter is tubular with a spring-loaded piston and a longitudinal slot through which air escapes. Its dynamic characteristics have been carefully designed to make it respond only to peak flow and not to rate of rise. Performance tests on early instruments showed fairly close correlation with the Wright peak-flow meter but ...
متن کاملComparison of the new miniature Wright peak flow meter with the standard Wright peak flow meter.
Preproduction and current models of the miniature Wright peak flow meter have been compared with the standard Wright peak flow meter on normal and abnormal subjects. Early problems in production appear to have been overcome, and the current model agrees to within 3% with the standard peak flow meter, which is as close as the agreement between two standard instruments. The new mini-meter may be ...
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Advanced applications in optical metrology demand improved lasers with high spectral purity, in form factors that are small and insensitive to environmental perturbations. While laboratory-scale lasers with extraordinarily high stability and low noise have been reported, all-integrated chip-scale devices with sub-100 Hz linewidth have not been previously demonstrated. Lasers integrated with opt...
متن کاملHow to cheat with the miniature wright peak flow meter.
In February, 1982, Chest published an article concerning a new and innovative unit at Bethesda Medical Center in St. Paul, Minnesota. This unit is an Inpatient Service kr patients with chronic respiratory problems who cannot be maintained in a home setting. We have found, however, that with rehabilitation, education and appropriate support services, many of our patients could be discharged. Med...
متن کاملA Low Cost C-V Meter for Characterizing Semiconductor Devices
A simple and low cost quasi-static capacitance-voltage (C-V) meter was designed and developed to obtain C-V characteristics of semiconductor devices based on a C8051F006 SoC (system on-a-chip). The developed C-V meter consists of a capacitance meter based on feedback charge amplifier, a programmable voltage source, a C8051F006 SoC-based slave controller, and a personal computer (PC) as a master...
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ژورنال
عنوان ژورنال: Acta Radiologica
سال: 1960
ISSN: 0001-6926
DOI: 10.3109/00016926009172527