نتایج جستجو برای: high frequency ventilation

تعداد نتایج: 2425362  

Journal: :Applied optics 2013
Ian A Bledowski Thomas O H Charrett Daniel Francis Stephen W James Ralph P Tatam

A new method of multiplexing the speckle patterns needed in multicomponent digital shearography systems is presented. Frequency-division multiplexing (FDM) of the measurement channels is achieved by recording speckle patterns from objects illuminated by intensity-modulated sources. Each source is modulated at a discrete frequency, which is less than half of the camera frame rate, and a bank of ...

Journal: :Journal of the Royal Society of Medicine 1983

Journal: :Canadian Journal of Respiratory Therapy 2019

Journal: :Archives of Disease in Childhood - Fetal and Neonatal Edition 2005

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