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Full-Text Articles in Life Sciences

Blue And Red Light Effects On Stomatal Oscillations, Trevor R. Ballard Dec 2018

Blue And Red Light Effects On Stomatal Oscillations, Trevor R. Ballard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plants absorb CO2 through pores in their leaves called stomata, which are known to open and close in response to myriad environmental and physiological triggers. We demonstrate that blue light inhibits stomatal aperture oscillations in both the guard cells and surrounding tissue layers, whereas these oscillations continue under the influence of red light. This observation of blue light behavior agrees with recent research and suggests another physiological pathway for oscillations.


Limit Cycle Displacement Model Of Circadian Rhythms, Van D. Gooch Jan 2007

Limit Cycle Displacement Model Of Circadian Rhythms, Van D. Gooch

Faculty Working Papers

A mathematical model has been examined that attempts to mimic the effects of changes in environmental conditions on circadian rhythms. The basis of the model claims that for a given set of environmental conditions (e.g., light, temperature and chemical concentrations) there exists a limit cycle that has a given position. When an environmental treatment is applied that is different from the control conditions, the position of the new limit cycle changes and the oscillating parameters of the circadian system are now attracted toward this newly positioned limit cycle. If conditions are subsequently returned back to control levels, the control limit …


Dynamic Diseases In Neurology And Psychiatry, John Milton, Deborah Black Mar 1995

Dynamic Diseases In Neurology And Psychiatry, John Milton, Deborah Black

WM Keck Science Faculty Papers

Thirty-two (32) periodic diseases of the nervous system are identified in which symptoms and/or signs recur. In 10/32, the recurrence of a symptom complex is one of the defining features of the illness, whereas in 22/32 oscillatory signs occur in the setting of an ongoing nervous system disorder. We discuss the possibility that these disorders may be dynamic diseases.