Results 51 to 60 of about 46,634 (304)

A Novel Delay-Dependent Asymptotic Stability Conditions for Differential and Riemann-Liouville Fractional Differential Neutral Systems with Constant Delays and Nonlinear Perturbation [PDF]

open access: yes, 2020
The novel delay-dependent asymptotic stability of a differential and Riemann-Liouville fractional differential neutral system with constant delays and nonlinear perturbation is studied.
Chartbupapan, Watcharin   +5 more
core   +1 more source

Delay-differential-equation model for mode-locked lasers based on nonlinear optical and amplifying loop mirrors [PDF]

open access: yes, 2021
Delay differential equation model of a nonlinear optical-nonlinear amplifying loop mirror mode-locked laser is developed that takes into account the finite relaxation rate of the gain medium and asymmetric beam splitting at the entrance of the nonlinear ...
Vladimirov, Andrei G.   +7 more
core   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

A numerical technique for solving nonlinear singularly perturbed delay differential equations

open access: yesMathematical Modelling and Analysis, 2018
This paper presents a numerical technique for solving nonlinear singularly perturbed delay differential equations. Quasilinearization technique is applied to convert the nonlinear singularly perturbed delay differential equation into a sequence of linear
A.S.V. Ravi Kanth, Mohan Kumar P. Murali
doaj   +1 more source

The nonnegativity of solutions of delay differential equations

open access: yesApplied Mathematics Letters, 2000
In this paper, the author proves the nonnegativity of solutions to delay equations of the type \[ x'(t)=F(x(t))+G(x(t-\tau)) \] under certain conditions. A few examples are discussed.
openaire   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

New multi-mode delay differential equation model for lasers with optical feedback

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
Radziunas, Mindaugas
core   +1 more source

Non-Spiking Laser Controlled by a Delayed Feedback

open access: yesMathematics, 2020
In 1965, Statz et al. (J. Appl. Phys. 30, 1510 (1965)) investigated theoretically and experimentally the conditions under which spiking in the laser output can be completely suppressed by using a delayed optical feedback. In order to explore its effects,
Anton V. Kovalev   +2 more
doaj   +1 more source

Integral Operators and Delay Differential Equations [PDF]

open access: yesJournal of Integral Equations and Applications, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gilsinn, David E., Potra, Florian A.
openaire   +2 more sources

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

open access: yesMolecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen   +11 more
wiley   +1 more source

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