It is a dollar in the sense that the value of the note is stated in units of one dollar. The statutory authority for the creation and issuance of Federal Reserve notes is provided by Â§ 16 of the Federal Reserve Act (see 12 O.S.C. S 411).
Related to QRS interval: QT interval. the duration of the QRS complex in the electrocardiogram. In the electrocardiogram, the interval that denotes depolarization of the ventricles, between the beginning of the Q wave and the end of the S wave. Its normal duration is 120â200 msec. Shorter durations are found, e.g., in preexcitation. Longer durations are indicative of first-degree heart block.
In the above example, the rate varies slightly from 72-75 beats per minute, the PR interval is .16 seconds, the QRS is .08 seconds and the QT interval is .34 seconds. Also, all the wave forms are normal. Each individualâs normal resting heart rate will vary, and can range from 40 to 120, higher in young children.lso, all the waveforms must be of a normal shape with no ST changes. In children, normal heart rate ranges are much higher. Infants to 1 year have a normal range to 180 beats per minute, 1-3 years to 150 beats per minute, 4-10 years to 130 beats per minute and 110 beats per minute to age 16.