نتایج جستجو برای: clock
تعداد نتایج: 47430 فیلتر نتایج به سال:
.............................................................................................................................. iii Yunus Annayev: Characterization of a new circadian clock gene Gm129 ................................ iii ACKNOWLEDGEMENTS ........................................................................................................ v TABLE OF CONTENTS ......................
A linear program is used to direct the placement of Standard Cells such that the clock period is minimized. Constraints upon the logic path delays and the clock signal arrival times at the flipflops allow multiple signals, corresponding to several clock cycles, to exist simultaneously on the logic signal paths during operation. The linear program constraints relate the clock period to the maxim...
The circadian rhythmicity of hormone secretion, body temperature, and sleep/wakefulness results from an endogenous rhythm of neural activity generated by clock genes in the suprachiasmatic nucleus (SCN). One of these genes, Clock, has been considered essential for the generation of cellular rhythmicity centrally and in the periphery; however, melatonin-proficient Clock(Delta19) + MEL mutant mic...
Circadian clocks are oscillatory systems that schedule daily rhythms of organismal behavior. The ability of the clock to reset its phase in response to external signals is critical for proper synchronization with the environment. In the model clock from cyanobacteria, the KaiABC proteins that comprise the core oscillator are directly sensitive to metabolites. Reduced ATP/ADP ratio and oxidized ...
We examined how a 50% Pavlovian partial reinforcement (PRF) schedule, versus a 100% continuous reinforcement (CRF) schedule, altered the asymptotic amount and distribution of focal and general search behavior in rats during 48-sec trials with and without a four-segment interfood clock (S1-S2-S3-S4-US). Under CRF, but not PRF, average asymptotic focal search (nosing in the feeder) increased acro...
A cyclic nature of quantum mechanical clock is discussed as " quantization of time. " Quantum mechanical clock is seen to be equivalent to the relativistic classical clock.
A cyclic nature of quantum mechanical clock is discussed as " quantization of time. " Quantum mechanical clock is seen to be equivalent to the relativistic classical clock.
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