Results 31 to 40 of about 730,247 (315)

Global stability analysis of axisymmetric liquid-liquid flow focusing [PDF]

open access: yes, 2020
Article number A10We analyse both numerically and experimentally the stability of the steady jetting tip streaming produced by focusing a liquid stream with another liquid current when they coflow through the orifice of an axisymmetric nozzle.
Montanero, J. M.   +4 more
core   +1 more source

Characterizations of Global Transversal Exponential Stability [PDF]

open access: yesIEEE Transactions on Automatic Control, 2021
We study the relationship between the global exponential stability of an invariant manifold and the existence of a positive semi-definite Riemannian metric which is contracted by the flow. In particular, we investigate how the following properties are related to each other (in the global case): i).
Vincent Andrieu   +2 more
openaire   +2 more sources

Global stability of a delayed and diffusive virus model with nonlinear infection function

open access: yesJournal of Biological Dynamics, 2021
This paper studies a delayed viral infection model with diffusion and a general incidence rate. A discrete-time model was derived by applying nonstandard finite difference scheme. The positivity and boundedness of solutions are presented.
Yan Geng, Jinhu Xu
doaj   +1 more source

An SEIR model with infectious latent and a periodic vaccination strategy

open access: yesMathematical Modelling and Analysis, 2021
An SEIR epidemic model with a nonconstant vaccination strategy is studied. This SEIR model has two disease transmission rates β1 and β2 which imitate the fact that, for some infectious diseases, a latent person can pass the disease into a susceptible one.
Islam A. Moneim
doaj   +1 more source

New indicators and measurement methods for welfare in the global economy era

open access: yes, 2022
This study discusses the inadequacy of GDP alone as a measure of welfare in the global economic age and examines alternative welfare indicators and measurement methods.
Kar, Mikail
core   +1 more source

How to safeguard soil health against silver nanoparticles through a microbial functional gene-based approach?

open access: yesEnvironment International
Silver nanoparticles (AgNPs), a major anthropogenic stressor, can threaten soil health by disrupting vital microbial processes critical to maintaining key soil functions such as nutrient cycling, organic matter decomposition, and soil structure formation.
Sandhya Mishra, Xiaodong Yang
doaj   +1 more source

Stability and bifurcation analysis of an HIV-1 infection model with a general incidence and CTL immune response

open access: yesJournal of Biological Dynamics, 2021
In this paper, with eclipse stage in consideration, we propose an HIV-1 infection model with a general incidence rate and CTL immune response. We first study the existence and local stability of equilibria, which is characterized by the basic infection ...
Xinsheng Ma, Yuhuai Zhang, Yuming Chen
doaj   +1 more source

Stability of HIV-1 Dynamics Models with Viral and Cellular Infections in the Presence of Macrophages

open access: yesAxioms, 2023
In this research work, we suggest two mathematical models that take into account (i) two categories of target cells, CD4+T cells and macrophages, and (ii) two modes of infection transmissions, the direct virus-to-cell (VTC) method and cell-to-cell (CTC ...
Aeshah A. Raezah   +3 more
doaj   +1 more source

Drivers of toxic element accumulation in terrestrial ecosystems across elevational gradients

open access: yesEcological Indicators
Terrestrial ecosystems, account for approximately 31% of the global land area and play a significant role in the biogeochemical cycling of toxic elements.
Baba Imoro Musah, Jie Yang, Guorui Xu
doaj   +1 more source

Global stability of the positive equilibrium for a non-cooperative model of nuclear reactors

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we investigate the non-cooperative reaction-diffusion model of nuclear reactors subject to the homogeneous Neumann boundary condition. By establishing appropriate Lyapunov functions, we prove the global stability of the unique positive ...
Qunyi Bie
doaj   +1 more source

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