SACs are those genes with expression up-regulated during leaf senescence. Class I SACs are expressed only during senescence (senescence-specific). Class II SAGs have a basal level of expression during early leaf development, but this level increases during senescence.
Which Sample Rate to use. 44.1 kHz. 44.1 kHz (44100 Hz) is the sampling rate of audio CDs giving a 20 kHz maximum frequency. 20 kHz is the highest frequency generally audible by humans, so making 44.1 kHz the logical choice for most audio material.
If the rateâs the same, youâre probably hearing the. motherâs heart sounds and need to reposition the device. When you locate the fetal heartbeat, count it for a full minute. and listen closely for any increases or decreases in rate. 3. Turn on the Doppler device and set the volume to the. halfway mark. Place the probe on the gel and listen for the. fetal heart sounds, adjusting the volume as needed.