Results 281 to 290 of about 72,901 (315)
Some of the next articles are maybe not open access.
World Journal of Urology, 2006
Do men have biological clocks that affect their hormone levels, fertility, and the genetic quality of their sperm? Women can no longer be viewed as solely responsible for age-related fertility and genetic problems. The effects of andropause and advanced paternal age on fertility and offspring are still under investigation. Further research is needed to
Sarah M, Lambert +2 more
openaire +2 more sources
Do men have biological clocks that affect their hormone levels, fertility, and the genetic quality of their sperm? Women can no longer be viewed as solely responsible for age-related fertility and genetic problems. The effects of andropause and advanced paternal age on fertility and offspring are still under investigation. Further research is needed to
Sarah M, Lambert +2 more
openaire +2 more sources
Phase locking of biological clocks
Journal of Mathematical Biology, 1982Radial isochron clocks (RICs) and their response to external signals and coupling with other RICs are studied. RICs are derived as phase approximations to self-sustained oscillators. Their response to single impulses (phase resetting) and to repetitive impulses is determined. This response may be harmonic or chaotic.
Hoppensteadt, F. C., Keener, J. P.
openaire +3 more sources
2003
Abstract Despite the many unsolved problems concerning our conscious awareness of time, there is increasing evidence that our bodies contain various biological clocks. For example, some illnesses reveal diurnal, or twenty-four-hour, rhythms which normally cannot be detected. Dr C. P. Richter of Baltimore has cited the case of a bedridden
openaire +1 more source
Abstract Despite the many unsolved problems concerning our conscious awareness of time, there is increasing evidence that our bodies contain various biological clocks. For example, some illnesses reveal diurnal, or twenty-four-hour, rhythms which normally cannot be detected. Dr C. P. Richter of Baltimore has cited the case of a bedridden
openaire +1 more source
2020
BIOLOGICAL RHYTHMS: Fooling Around With Time. More Seriously. Methods of Rhythm Measurement. Entrainment. Freeruns. More Related to Freeruns. Resetting. Can Clock Be Stopped? Temperature and Chemicals. Seasons and Photoperiodism. Circarhythms. Biological Clockworks. Human Rhythms. The End of the Whole Mess. APPNEDICES: Glossary. Societies.
openaire +1 more source
BIOLOGICAL RHYTHMS: Fooling Around With Time. More Seriously. Methods of Rhythm Measurement. Entrainment. Freeruns. More Related to Freeruns. Resetting. Can Clock Be Stopped? Temperature and Chemicals. Seasons and Photoperiodism. Circarhythms. Biological Clockworks. Human Rhythms. The End of the Whole Mess. APPNEDICES: Glossary. Societies.
openaire +1 more source
Physics Today, 1975
A pendulum can be stopped by a single impulse of the right magnitude, delivered at the proper time; started again, its phase will have changed. A biological oscillation, although it is a vastly more complicated phenomenon, can likewise be arrested by a single stimulus of a definite strength delivered at the proper time.
openaire +1 more source
A pendulum can be stopped by a single impulse of the right magnitude, delivered at the proper time; started again, its phase will have changed. A biological oscillation, although it is a vastly more complicated phenomenon, can likewise be arrested by a single stimulus of a definite strength delivered at the proper time.
openaire +1 more source
Current Gastroenterology Reports, 2006
The gastrointestinal tract displays biologic rhythms in basal gastric acid output, epithelial cell proliferation, gastrointestinal motility, and appetite regulation. Furthermore, the development of gastrointestinal complications after administration of aspirin and after chemo- and radiotherapy for metastatic colon cancer depends on the time of ...
openaire +2 more sources
The gastrointestinal tract displays biologic rhythms in basal gastric acid output, epithelial cell proliferation, gastrointestinal motility, and appetite regulation. Furthermore, the development of gastrointestinal complications after administration of aspirin and after chemo- and radiotherapy for metastatic colon cancer depends on the time of ...
openaire +2 more sources