Results 71 to 80 of about 7,726,351 (314)

Global dynamics and spatiotemporal heterogeneity of a preytaxis model with prey-induced acceleration

open access: yesEuropean Journal of Applied Mathematics
Conventional preytaxis systems assume that prey-tactic velocity is proportional to the prey density gradient. However, many experiments exploring the predator–prey interactions show that it is the predator’s acceleration instead of velocity that is ...
Chunlai Mu, Weirun Tao, Zhi-An Wang
doaj   +1 more source

Analysis of General Humoral Immunity HIV Dynamics Model with HAART and Distributed Delays

open access: yesMathematics, 2019
This paper deals with the study of an HIV dynamics model with two target cells, macrophages and CD4 + T cells and three categories of infected cells, short-lived, long-lived and latent in order to get better insights into HIV infection within the
A. M. Elaiw, E. Kh. Elnahary
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Impact of modified biochar on phosphorus fractionation and biochemical properties for different soils

open access: yesEnvironmental Sciences Europe
Modified (metal oxide) biochar is widely used for the remediation of degraded soils, but there has been limited research work on its effect on phosphorus fractionation and biochemical properties under different soil conditions.
Muhammad Numan Khan   +11 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Relationships Between Soil Phosphorus Fractions and Greenhouse Gas Emissions in Degraded Red and Black Soils Amended With Magnesium Treated Biochar

open access: yesGCB Bioenergy
This study investigated the effects of pristine biochar (BC) and magnesium‐treated biochar (Mg‐BC), applied at 0%, 1%, and 2.5% (w/w), on the relationship between P fractions and GHG emissions in two degraded soils.
Muhammad Numan Khan   +10 more
doaj   +1 more source

Global stability in job systems

open access: yesJournal of Mathematical Analysis and Applications, 1988
A simple job system with n grades is introduced here and it is described by a system \(\dot x_ i=x_ i\sum^{n}_{j=1}a_{ij}x_ j\), \(i=1,2,...,n\). The per capita growth rate coefficients \(a_{ij}\) are such that \(a_{ii}0\), \(i\neq j\). Under these conditions a complete picture of the phase portrait of the system is presented as follows: Let \(A=(a_{ij}
Karakostas, G., Gyori, I.
openaire   +2 more sources

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

Global imbalances and financial stability [PDF]

open access: yesJournal of Policy Modeling, 2007
This paper discusses two opposing views on global imbalances: The "traditional view", which regards the imbalances as a threat to global economic and financial stability, and the "new paradigm" view, which considers that they are the natural consequence of economic and financial globalization. In terms of their policy implications, the traditional view
openaire   +2 more sources

An updated definition of global health

open access: yes
The most cited definition of global health, published in The Lancet in 2009, defines global health as "an area for study, research, and practice that places a priority on improving health and achieving equity in health for all people worldwide".
Waggett, Caryl E.   +15 more
core   +1 more source

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