Historically, foamy urine is considered a warning sign for probable kidney disease. Nephrologists and urologists traditionally refer to it as a marker of proteinuria. Upon history and physical examination, many clinicians ask whether the patient has noticed foamy urine, and some even document a lack of it as a significant negative finding.
Phase synchronization. Phase synchronization is the process by which two or more cyclic signals tend to oscillate with a repeating sequence of relative phase angles. Phase synchronisation is usually applied to two waveforms of the same frequency with identical phase angles with each cycle. However it can be applied if there is an integer relationship of frequency, such that the cyclic signals share a repeating sequence of phase angles over consecutive cycles.
Phase (waves) The relationship between period, frequency, and amplitude for a sine wave is illustrated in this image. Phase is the position of a point in time (an instant) on a waveform cycle. A complete cycle is defined as the interval required for the waveform to return to its arbitrary initial value. The graphic to the right shows how one cycle constitutes 360Â° of phase.