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.
Reproductive synchrony. Reproductive synchrony is a term used in evolutionary biology and behavioural ecology. Reproductive synchrony â sometimes termed 'ovulatory synchrony' â may manifest itself as 'breeding seasonality'. Where females undergo regular menstruation, 'menstrual synchrony' is another possible term.