Results 61 to 70 of about 105,870 (288)
Oscillation of Nonlinear Neutral Delay Differential Equations [PDF]
, 2008 2000 Mathematics Subject Classification: 34K15, 34C10.In this paper, we study the oscillatory behavior of first order nonlinear neutral delay differential equation (x(t) − q(t) x(t − σ(t))) ′ +f(t,x( t − τ(t))) = 0, where σ, τ ∈ C([t0,∞),(0,∞)), q О C ...
Elabbasy, E. M., Hassan, T. S.
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Advanced Functional Materials, EarlyView.Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi +5 more
wiley +1 more source
Positive periodic solutions in neutral nonlinear differential equations
Electronic Journal of Qualitative Theory of Differential Equations, 2007 We use Krasnoselskii's fixed point theorem to show that the nonlinear neutral differential equation with delay \begin{equation} \frac{d}{dt}[x(t) - ax(t-\tau)]= r(t)x(t)- f(t, x(t-\tau)) \end{equation} has a positive periodic solution.
Youssef Raffoul
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Existence theory for a class of evolutionary equations with time-lag, studied via integral equation formulations [PDF]
, 2006 In discussions of certain neutral delay differential equations in Hale’s form, the relationship of the original problem with an integrated form (an integral equation) proves to be helpful in considering existence and uniqueness of a solution and ...
Baker, Christopher T. H. +1 more
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Exponential Stability of Highly Nonlinear Hybrid Differently Structured Neutral Stochastic Differential Equations with Unbounded Delays [PDF]
, 2022 Boliang Lu, Quanxin Zhu, Ping He
openalex +1 more source
Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth
Advanced Functional Materials, EarlyView.Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang +5 more
wiley +1 more source
About the location of some quasipolinomial roots
Lietuvos Matematikos Rinkinys, 2004 The location of quasipolinomial roots in a complex plane that appear while we investigate differential equations of the locator and the combustion process in the rocket engine is analysed.
Donatas Švitra, Ingrida Sirvydaitė
doaj +3 more sources
Electronic Journal of Qualitative Theory of Differential Equations, 2016 We study the half-linear neutral differential equation \begin{equation*} \Bigl[r(t)\Phi(z'(t))\Bigr]'+c(t)\Phi(x(\sigma(t)))=0, \qquad z(t)=x(t)+b(t)x(\tau(t)), \end{equation*} where $\Phi(t)=|t|^{p-2}t$.
Simona Fišnarová
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Stability of neutral equations with constant time delays [PDF]
A method was developed for determining the stability of a scalar neutral equation with constant coefficients and constant time delays. A neutral equation is basically a differential equation in which the highest derivative appears both with and without a
Barker, L. K., Whitesides, J. L.
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Thermoacoustic instability - a dynamical system and time domain analysis
, 2014 This study focuses on the Rijke tube problem, which includes features relevant to the modeling of thermoacoustic coupling in reactive flows: a compact acoustic source, an empirical model for the heat source, and nonlinearities.
Chenadec, Vincent Le +4 more
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