scholarly journals The Light-Perturbed Ru-Catalyzed Belousov−Zhabotinsky Reaction:  Evidence for Photochemically Produced Bromous Acid and Bromide Ions by Phase Response Analysis

2000 ◽  
Vol 104 (46) ◽  
pp. 10783-10788 ◽  
Author(s):  
Ludovit Treindl ◽  
David Knudsen ◽  
Tatsuhito Nakamura ◽  
Takeko Matsumura-Inoue ◽  
Kåre B. Jørgensen ◽  
...  
Keyword(s):  
Phase Response ◽  
Response Analysis ◽  
Bromide Ions ◽  
Belousov Zhabotinsky Reaction

Effects of spontaneous swallows on breathing in awake goats

2002 ◽  
Vol 92 (5) ◽  
pp. 1923-1935 ◽  
Author(s):  
Thom R. Feroah ◽  
H. V. Forster ◽  
Carla G. Fuentes ◽  
Ivan M. Lang ◽  
David Beste ◽  
...  
Keyword(s):  
Electrical Activity ◽  
Tidal Volume ◽  
Onset Time ◽  
Phase Response ◽  
Response Analysis ◽  
Dependent Effect ◽  
Pharyngeal Muscle ◽  
Awake State ◽  
Respiratory Phase

The effects of spontaneous swallows on breathing before, during, and after solitary swallows were investigated in 13 awake goats. Inspiratory (Ti) and expiratory (Te) time and respiratory output were determined from inspiratory airflow [tidal volume (Vt)] and peak diaphragmatic activity (Diapeak). The onset time for 1,128 swallows was determined from pharyngeal muscle electrical activity. During inspiration, the later the swallowing onset, the greater increase in Ti and Vt, whereas there was no significant effect on Te and Diapeak. Swallows in early expiration increased the preceding Ti and reduced Te, whereas later in expiration swallows increased Te. After expiratory swallows, Ti and Vt were reduced whereas minimal changes in Diapeak were observed. Phase response analysis revealed a within-breath, phase-dependent effect of swallowing on breathing, resulting in a resetting of the respiratory oscillator. However, the shift in timing in the breaths after a swallow was not parallel, further demonstrating a respiratory phase-dependent effect on breathing. We conclude that, in the awake state, within- and multiple-breath effects on respiratory timing and output are induced and/or required in the coordination of breathing and swallowing.

scholarly journals Isochron-Based Phase Response Analysis of Circadian Rhythms

2006 ◽  
Vol 91 (6) ◽  
pp. 2131-2141 ◽  
Author(s):  
Rudiyanto Gunawan ◽  
Francis J. Doyle
Keyword(s):  
Circadian Rhythms ◽  
Phase Response ◽  
Response Analysis

Central respiratory oscillator: phase-response analysis

1988 ◽  
Vol 439 (1-2) ◽  
pp. 19-30 ◽  
Author(s):  
Shin-ichiro Kitano ◽  
Akira Komatsu
Keyword(s):  
Phase Response ◽  
Response Analysis ◽  
Oscillator Phase

Contribution of Malonyl Radical Control in the Classical Belousov-Zhabotinsky Reaction

1990 ◽  
Vol 45 (11-12) ◽  
pp. 1259-1266
Author(s):  
Horst-Dieter Försterling ◽  
Szilvia Murányi
Keyword(s):  
Original Theory ◽  
Bromide Ions ◽  
Belousov Zhabotinsky Reaction

AbstractIn the original theory of the Belousov-Zhabotinsky reaction it is assumed that the oscillations are exclusively controlled by bromide ions. From uv/vls and ESR experiments on BZ systems started with Ce4 + we conclude that malonyl radicals play an important role as additional intermediates. The experiments are in agreement with calculations based on the Radicalator model.

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