Results 111 to 120 of about 285,537 (315)
Periodic orbits near equilibria via averaging theory of second order
Mathematical Modelling and Analysis, 2012 Lyapunov, Weinstein and Moser obtained remarkable theorems giving sufficient conditions for the existence of periodic orbits emanating from an equilibrium point of a differential system with a first integral.
Luis Barreira +2 more
doaj +1 more source
A note on methods with 0(H4) and 0(H6) phase lags for periodic
, 1985 Two families of computational methods are discussed for the solution of second order periodic initial value problems. The first is a family with 0(H4) phase-lag which contains the recently published "Numerov made explicit" method of Chawla [2].
Twizell, E H
core
Directed evolution of enzymes at the crossroads of tradition and innovation
FEBS Open Bio, EarlyView.An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova +2 more
wiley +1 more source
Periodic solutions of second order nonlinear functional difference equations [PDF]
, 2007 summary:Sufficient conditions for the existence of at least one $T-$periodic solution of second order nonlinear functional difference equations are established.
Liu, Yuji
core
FEBS Open Bio, EarlyView.TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose +9 more
wiley +1 more source
Periodic solutions of non-autonomous second order systems with p-Laplacian
Electronic Journal of Differential Equations, 2009 We prove the existence of periodic solutions for non-autonomous second order systems with p-Laplacian. Our main tools are the minimax methods in critical point theory. Our results are new, even when p=2.
Jihui Zhang, Zhiyong Wang
doaj
, 1985 Phase—lag computations are carried out for a family of two-step multiderivative methods for solving second order initial value problems of the form y" = f(t,y), y(t0) = y0, y'(t0) = z0.
Twizell, E H
core
Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes
FEBS Open Bio, EarlyView.Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard +12 more
wiley +1 more source
Developmental and Epileptic Encephalopathy due to Biallelic Pathogenic Variants in PIGM
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective PIGM encodes a critical enzyme in the glycosylphosphatidylinositol (GPI)‐anchor biosynthesis pathway. While promoter‐region mutations in PIGM have been associated with a relatively mild phenotype characterized by portal vein thrombosis and absence seizures, recent evidence suggests that coding‐region mutations result in a more severe
Júlia Sala‐Coromina +11 more
wiley +1 more source
Periodic solutions for second order differential equations with indefinite singularities
Advances in Nonlinear Analysis, 2019 In this paper, the problem of periodic solutions is studied for second order differential equations with indefinite ...
Lu Shiping, Yu Xingchen
doaj +1 more source