scholarly journals Analytic extrapolations and the determination of pion-pion phase shifts

1970 ◽  
pp. 43-60 ◽  
Author(s):  
Jan Pišút
Keyword(s):  
Phase Shifts

Measurement method for determination of optical phase shifts in 3 × 3 fibre couplers

1988 ◽  
Vol 24 (5) ◽  
pp. 265 ◽  
Author(s):  
E. Gottwald ◽  
J. Pietzsch
Keyword(s):  
Measurement Method ◽  
Phase Shifts ◽  
Optical Phase

scholarly journals Study of a multiaxial cyclic loading with determination of a critical plane for arbitrary phase shifts

2019 ◽  
Vol 23 ◽  
pp. 131-136
Author(s):  
I.S. Nikitin ◽  
N.G. Burago ◽  
Nikitin A.D. ◽  
B.A. Stratula
Keyword(s):  
Cyclic Loading ◽  
Phase Shifts ◽  
Critical Plane ◽  
Arbitrary Phase

Glucocorticosteroid injection is a circadian zeitgeber in the laboratory rat

1982 ◽  
Vol 243 (3) ◽  
pp. R373-R378 ◽  
Author(s):  
N. D. Horseman ◽  
C. F. Ehret
Keyword(s):  
Phase Response Curve ◽  
Phase Shifts ◽  
Phase Shifting ◽  
Constant Darkness ◽  
Circadian Cycle ◽  
Saline Injection ◽  
Laboratory Rats ◽  
Circadian Phase ◽  
Ad Libitum Feeding

Intraperitoneal temperatures were monitored by radiotelemetry to observe the thermoregulatory rhythm of male laboratory rats (Rattus norvegicus albinus) Rats received single injections of dexamethasone (as dexamethasone sodium phosphate) during constant darkness (0.1 lx) with food freely available or no food available. No phase shifts occurred following saline injection or dexamethasone at 1 mg/kg body wt. Depending on the phase of injection relative to the circadian cycle, dexamethasone at 10 mg/kg caused thermoregulatory peaks to be either delayed or advanced on the 4th and 5th day after injection. There was an insensitive interval which corresponded to subjective day. Phase shifts induced by dexamethasone during ad libitum feeding were of less magnitude than those induced during starvation. The determination of phase-shifting parameters (i.e., a phase-response curve) for hormonal substances represents a rigorous and broadly applicable technique for determining endogenous mechanisms for circadian phase control and entrainment.

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