Results 41 to 50 of about 5,961,166 (286)

On a class of first order nonlinear functional differential equations of neutral type [PDF]

, 1987
Consider the neutral differential equation ddt [y(t) + py(t − τ)] + qy(t − σ) = 0, t ≧ t0 (∗) where p, q, τ, and σ are real numbers. Then a necessary and sufficient condition for the oscillation of (∗) is that the characteristic equation λ + pλe−λτ + qe ...
Ladas, G, Meimaridou, A, Jaroš, Jaroslav, Kusano, Takaŝi, Grove, E.A   +4 more
core   +1 more source

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

Approximate controllability of neutral functional differential system with unbounded delay

International Journal of Mathematics and Mathematical Sciences, 2001
We consider a class of control systems governed by the neutral functional differential equation with unbounded delay and study the approximate controllability of the system. An example is given to illustrate the result.
Jong Yeoul Park, Sang Nam Kang
doaj   +1 more source

Periodic solutions to a $p$-Laplacian neutral Rayleigh equation with deviating argument [PDF]

, 2006
summary:By using the coincidence degree theory, we study a type of $p$-Laplacian neutral Rayleigh functional differential equation with deviating argument to establish new results on the existence of $T$-periodic ...
Bo Du, Hu, Xueping, Huang, Lihong, Xueping Hu, Du, Bo, Liu, Bingwen   +5 more
core   +1 more source

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

Functional differential equations of third order

Electronic Journal of Differential Equations, 2005
In this paper, we consider the third-order neutral functional differential equation with distributed deviating arguments. We give sufficient conditions for the oscillatory behavior of this functional differential equation.
Tuncay Candan, Rajbir S. Dahiya
doaj  

Optimal Control for Functional-Differential Equation of Neutral Type in BanachТ‘Т‘ Spaces

Journal of Optimization, Differential Equations and Their Applications
This paper examines an optimal control problem for a class of neutral-type functional-differential equations in Banach spaces, where the control objective relates to the boundary of the domain. Sufficient conditions on the coefficients are established to
O. V. Perehuda, O. M. Stanzhytskiy, T. V. Klimchuk, M. N. Ospanov   +3 more
doaj   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

Molecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola, Yasmine Illi, Anna Bircher, Marijn Wilmink, Rachele F. Malagutti, Solenn Ottié, Cordelia Schuler, Pedro A. Ruiz, Cheryl de Vallière, Klaus Seuwen, Gerhard Rogler, Martin Hausmann   +11 more
wiley   +1 more source

Stability of Nonlinear Neutral Stochastic Functional Differential Equations

Journal of Applied Mathematics, 2010
Neutral stochastic functional differential equations (NSFDEs) have recently been studied intensively. The well‐known conditions imposed for the existence and uniqueness and exponential stability of the global solution are the local Lipschitz condition and the linear growth condition.
Xue, Minggao, Zhou, Shaobo, Hu, Shigeng
openaire   +3 more sources

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

Molecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang, Hyung Seok Kim, Geum Ok Baek, Moon Gyeong Yoon, Su In Lee, Jee‐Yeong Jeong, Ji Eun Han, Soon Sun Kim, Jae Youn Cheong, Jung Woo Eun   +9 more
wiley   +1 more source