Results 41 to 50 of about 46,634 (304)

On the global attractor of delay differential equations with unimodal feedback

open access: yes, 2009
We give bounds for the global attractor of the delay differential equation x(over dot) (t) = -mu x(t) + f(x(t - tau)), where f is unimodal and has negative Schwarzian derivative.
Liz, Eduardo   +3 more
core   +1 more source

On stability and boundedness of solutions of a certain fourth-order delay differential equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
Using a Razumikhin - type theorem, we deduce sufficient conditions that guarantee the uniform asymptotic stability and boundedness of solutions of a scalar real fourth-order delay differential equation.
Emmanuel O. Okoronkwo
doaj   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

open access: yesFEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes   +4 more
wiley   +1 more source

Tracking oscillations in the presence of delay-induced essential instability [PDF]

open access: yes, 2007
Hybrid experiments, which couple mechanical experiments and computer simulations bidirectionally and in real-time, are a promising experimental technique in engineering.
Krauskopf, B.   +3 more
core   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

A multi-mode delay differential equation model for lasers with optical feedback [PDF]

open access: yes, 2016
In this paper, we discuss the relations between the spatially-distributed traveling wave, Lang-Kobayashi, and a new multi-mode delay differential equation models for Fabry-Perot type semiconductor diode lasers with an external optical feedback. All these
Mindaugas Radziunas   +1 more
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Analytical investigation of the control sysytem with delays

open access: yesLietuvos Matematikos Rinkinys, 2021
The forced synchronization system compared of n oscillators (n = 4, 6, 8) is analysed. Exact analytical expressions for elements of the step responsesmatrix of the system are derived.
Tatjana Sidekerskienė, Jonas Rimas
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Delay differential systems with time-varying delay: new directions for stability theory [PDF]

open access: yes, 2001
summary:In this paper we give an example of Markus–Yamabe instability in a constant coefficient delay differential equation with time-varying delay.
Louisell, James
core   +1 more source

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