Results 101 to 110 of about 76,149 (301)

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

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

Positive solutions for periodic boundary value problem of fractional differential equation in Banach spaces

Advances in Difference Equations, 2018
This paper discusses the existence and uniqueness of positive solutions for a periodic boundary value problem of a fractional differential equation in an ordered Banach space E.
Yibo Kong, Pengyu Chen
doaj   +1 more source

The number of equilibria of smooth infinite economies with separable utilities [PDF]

We construct an index theorem for smooth infinite economies with separable utilities that shows that generically the number of equilbria is odd. As a corollary, this gives a new proof of existence and gives conditions that guarantee global uniqueness of ...
Covarrubias, Enrique
core  

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Optimal pair of fixed points: existence, uniqueness and approximation

Fixed Point Theory and Algorithms for Sciences and Engineering
In this paper, we introduce a novel class of mappings, referred to as noncyclic generalized θ-contractions. By employing the geometric concept of W U C $WUC$ property in metric spaces, we establish new existence and convergence theorems for the fixed ...
A. Safari-Hafshejani, M. Gabeleh
doaj   +1 more source

On the groundstate of octonionic matrix models in a ball

Physics Letters B, 2015
In this work we examine the existence and uniqueness of the groundstate of a SU(N)×G2 octonionic matrix model on a bounded domain of RN. The existence and uniqueness argument of the groundstate wavefunction follows from the Lax–Milgram theorem ...
L. Boulton, M.P. Garcia del Moral, A. Restuccia   +2 more
doaj   +1 more source

Nonlinear Critical Elliptic Problems: Existence and Uniqueness

, 2023
In this thesis, I shall study the existence, local uniqueness and other related subjects for the bubbling solutions of two elliptic problems involving critical Sobolev ...
Li, Benniao, Du, Yihong
core  

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

FEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise, Tiziano Mazza, Raffaella Scanga, Lara Console, Michele Galluccio, Cesare Indiveri   +5 more
wiley   +1 more source

Existence and uniqueness of solutions to a semilinear elliptic system [PDF]

, 2009
In this article, we show the existence and uniqueness of smooth solutions for boundary-value problems of semilinear elliptic systems ...
Cui, Ying, Chen, Zu-Chi
core   +2 more sources

Existence of solutions to fractional order ordinary and delay differential equations and applications

Electronic Journal of Differential Equations, 2011
In this article, we discuss the existence and uniqueness of solution to fractional order ordinary and delay differential equations. We apply our results on the single species model of Lotka Volterra type.
Syed Abbas
doaj