Results 111 to 120 of about 645,356 (284)
Arithmetic and growth of periodic orbits
, 1999 We give necessary and sufficient conditions for a sequence to be exactly realizable as the sequence of numbers of periodic points in a dynamical system. Using these conditions, we show that no non-constant polynomial is realizable, and give some conditions on realizable binary recurrence sequences.
Puri, Y, Ward, T
openaire +5 more sources
Bifurcations of periodic orbits and uniform approximations. [PDF]
, 1997 We derive uniform approximations for contributions to Gutzwiller's periodic-orbit sum for the spectral density which are valid close to bifurcations of periodic orbits in systems with mixed phase space.
Schomerus, Henning, Sieber, Martin
core +1 more source
A Disk-originated 329 Day Quasiperiodic Oscillation in the Seyfert 1 Galaxy J1626+5120
The Astrophysical Journal LettersThe Seyfert 1 galaxy J1626+5120 is estimated to host a 10 ^8 M _⊙ black hole (BH) accreting at Eddington ratio ${\dot{m}}_{\,\rm{Edd}\,}\approx 0.043$ . Its long-term multiband light-curve data show flicker-like variations, but in a well-sampled g -band ...
Litao Zhu +4 more
doaj +1 more source
FEBS Open Bio, EarlyView.In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey +4 more
wiley +1 more source
FEBS Open Bio, EarlyView.The neurokinin 1 receptor exists as full‐length (NK1L) and C‐terminally truncated (NK1S) splice variants. We show that NK1S heterodimerizes with NK1L, impairing Gαq coupling and Ca2+ mobilization while enhancing β‐arrestin1 recruitment. NK1S suppresses substance P‐driven gene expression and cell migration, revealing NK1S as an endogenous biased ...
Lan Phuong Nguyen +8 more
wiley +1 more source
Unstable periodic orbits and heteroclinic connections in plane Couette flow
, 2008 Equilibrium, traveling wave, and periodic orbit solutions of pipe, channel, and plane Couette flows can now be computed precisely at Reynolds numbers above the onset of turbulence.
Cvitanovic, Predrag, Gibson, John F.
core
Research on a Ka‐band large‐orbit gyro‐TWT with periodic dielectric‐loaded structure
Electronics LettersThis paper presents a design of a gyro‐TWT operating in the large‐orbit electron beam mode, with the aim of reducing the working magnetic field while ensuring operational efficiency.
Yang Jintao +6 more
doaj +1 more source
FEBS Open Bio, EarlyView.Human ABCE1 cannot functionally replace its yeast ortholog. Yeast–human chimera analysis identified NBD1 as a major interspecies barrier. Genetic screening yielded hABCE1 revertants that rescue yeast viability but fail to suppress aberrant translation reinitiation in the 3′ UTR.
Eriko Nakata +3 more
wiley +1 more source
Screen chaotic motion by Shannon entropy in curved spacetimes
European Physical Journal C: Particles and FieldsWe find a novel characteristic for chaotic motion by introducing Shannon entropy for periodic orbits, quasiperiodic orbits, and chaotic orbits. We compare our approach with the previous methods including Poincaré section, Lyapunov exponent, fast Lyapunov
Wenfu Cao, Yang Huang, Hongsheng Zhang
doaj +1 more source