Results 91 to 100 of about 2,445,513 (291)
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
Bifurcation Structures in a Bimodal Piecewise Linear Map
Frontiers in Applied Mathematics and Statistics, 2017 In this paper we present an overview of the results concerning dynamics of a piecewise linear bimodal map. The organizing principles of the bifurcation structures in both regular and chaotic domains of the parameter space of the map are discussed.
Anastasiia Panchuk +2 more
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On Disconjugate Differential Equations [PDF]
Transactions of the American Mathematical Society, 1968 with continuous coefficients on a t-interval I is said to be disconjugate on I if no solution (0-0) has n zeros on I. For n>2, most known results giving conditions which assure that (0.1) is disconjugate concern perturbations of un -=0 either for a fixed finite interval [as, e.g., in the theorem of de la Vallee Poussin (cf. [2, Exercise 5.3(d), p. 346])
openaire +2 more sources
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
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On stochastic differential equations and a generalised Burgers equation [PDF]
, 2012 In this paper, we discuss a link of Itˆo’s stochastic differential equa- tions to nonlinear partial differential equations of Burgers type. Un- der certain conditions, we derive a generalised Burgers equation from a stochastic differential equation.
Wu, JiangLun, Yang, Wei
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Trajectory Planning for Infinitely Smooth Motion Using Non-Polynomial Functions
Engineering ProceedingsAlthough the polynomial approach is effective in many respects, it cannot provide fully smooth transitions between motion phases due to limited continuity at phase boundaries.
Hristo Genev, Miroslava Ivanova
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Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
FEBS Letters, EarlyView.Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
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Journal of Optimization, Differential Equations and Their Applications, 2020 Vladimir L. Borsch, Peter I. Kogut
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Modeling the Law of Motion of a Robotic Manipulator Using Polynomial Functions
Engineering ProceedingsThe increasing use of robotic manipulators in construction requires precise trajectory planning to reduce oscillations, dynamic loads, and positioning errors.
Miroslava Ivanova, Hristo Genev
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Journal of Applied Mathematics, 2012 The unsteady unidirectional flow of an incompressible fourth grade fluid bounded by a suddenly moved rigid plate is studied. The governing nonlinear higher order partial differential equation for this flow in a semiinfinite domain is modelled ...
Taha Aziz, F. M. Mahomed
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