Results 61 to 70 of about 9,489,153 (244)
New periodic orbits in the solar sail three-body problem [PDF]
, 2011 We identify displaced periodic orbits in the circular restricted three-body problem, wher the third (small) body is a solar sail. In particular, we consider solar sail orbits in the earth-sun system which are high above the exliptic plane.
Biggs, J.D., Waters, T., McInnes, C.R.
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Periodic boundary value problems for first order difference equations
Electronic Journal of Qualitative Theory of Differential Equations, 2012 In this paper, existence criteria for single and multiple positive solutions of some of periodic boundary value problems for first order difference equation \[\left\{\begin{array}{ll} \Delta x(k)+f(k,x(k+1))=0, & k\in \left[ 0,T\right] ,\\ x(0)=x(T+1), &
Wen Guan, Suang-Hong Ma, Da-Bin Wang
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On Periodic Solutions of One Second-Order Differential Equation
Современная математика: Фундаментальные направления, 2021 In this paper, we investigate the movement of an inverted pendulum, the suspension point of which performs high-frequency oscillations along a line making a small angle with the vertical.
G. V. Demidenko, A. V. Dulepova
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On the orders of periodic diffeomorphisms of 4-manifolds [PDF]
Duke Mathematical Journal, 2011 This paper initiated an investigation on the following question: Suppose a smooth 4-manifold does not admit any smooth circle actions. Does there exist a constant $C>0$ such that the manifold support no smooth $\Z_p$-actions of prime order for $p>C$?
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Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Multiple periodic solutions for second order Josephson-type differential systems
Boundary Value Problems, 2017 In this paper, some new existence theorems are obtained for multiple periodic solutions of second order Josephson-type differential systems with partially periodic potential by using the minimax methods in critical point theory, which generalize and ...
Shengui Zhang
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Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics
FEBS Letters, EarlyView.Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt +8 more
wiley +1 more source
Stability Analysis of Fractional-Order Periodic Piecewise Nonlinear Systems
IEEE Access, 2023 This paper investigates the stability problem of fractional-order periodic piecewise nonlinear systems. As a preparation, the existence and uniqueness of solutions of the system are derived under the Lipschitz condition and expressed in an equivalent ...
Qingqing Li +4 more
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$M$-periodic problem of order $2k$
Topological Methods in Nonlinear Analysis, 1998 The author gives sufficient conditions for the existence of solutions to some general matrix-periodic problems of higher even order, which have a variational structure. A key tool in the proofs is a generalization of the Du Bois-Reymond lemma for periodic functions of order one, which was proved by the author in a previous work [Gȩba, Kazimierz (ed ...
openaire +4 more sources
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source