Results 81 to 90 of about 1,903,470 (246)

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS 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

PERIODIC AND ALMOST-PERIODIC SOLUTIONS OF RECURRENT MULTIPLICATIVE SECOND-ORDER EQUATIONS

open access: yesСовременная наука и инновации, 2022
Solutions of the recurrent multiplicative equation of a special kind are considered. The values of the parameters of the equation are defined, for which the solutions are periodic, almost periodic or combine properties of a geometric progression and ...
Victor Grigorievich Rudenko   +2 more
doaj  

The ubiquitin system in normal and infected germinal center B cells

open access: yesFEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis   +2 more
wiley   +1 more source

Asymptotically almost periodic and almost periodic solutions for a class of partial integrodifferential equations

open access: yesElectronic Journal of Differential Equations, 2006
In this note, we establish the existence of asymptotically almost periodic and almost periodic solutions for a class of partial integrodifferential equations.
Eduardo Hernandez M.   +1 more
doaj  

Almost periodic solutions of $N$-th order neutral differential difference equations with piecewise constant arguments

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
In this paper, we study the existence of almost periodic solutions of neutral differential difference equations with piecewise constant arguments via difference equation methods.
Rong-Kun Zhuang
doaj   +1 more source

Metastatic niche shaped by host factors influences disseminated cancer cell fate

open access: yesFEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward   +2 more
wiley   +1 more source

Almost-periodic solutions in various metrics of higher-order differential equations with a nonlinear restoring term [PDF]

open access: yes, 2006
summary:Almost-periodic solutions in various metrics (Stepanov, Weyl, Besicovitch) of higher-order differential equations with a nonlinear Lipschitz-continuous restoring term are investigated. The main emphasis is focused on a Lipschitz constant which is
ANDRES J   +4 more
core   +1 more source

Almost periodic distributions and crystalline measures

open access: yesМатематичні Студії
We study temperate distributions and measures with discrete support in Euclidean space and their Fourier transforms with special attention to almost periodic distributions.
S. Yu. Favorov
doaj   +1 more source

An amenability property of algebras of functions on semidirect products of semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Let S1 and S2 be semitopological semigroups, S1 τ  S2 a semidirect product. An amenability property is established for algebras of functions on S1 τ  S2.
Bao-Ting Lerner
doaj   +1 more source

Pseudo Almost Periodic Sequence Solutions of Discrete Time Cellular Neural Networks

open access: yesNonlinear Analysis, 2009
In this paper we discuss the existence and uniqueness of a k-pseudo almost periodic sequence solutions of a discrete time neural network. We give several sufficient conditions for the exponential and global attractivity of the solution.
S. Abbas
doaj   +1 more source

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