Results 91 to 100 of about 1,843,306 (292)

Asymptotic spreading of predator-prey populations in a shifting environment

open access: yesMathematics in Applied Sciences and Engineering
Inspired by a recent study associating shifting temperature conditions with changes in the efficiency with which predators convert prey to offspring, we propose a predator prey model of reaction-diffusion type to analyze the consequence of such effects ...
King-Yeung Lam, Ray Lee
doaj   +1 more source

Spreading dynamics on networks: the role of burstiness, topology and non-stationarity

open access: yesNew Journal of Physics, 2014
Spreading on networks is influenced by a number of factors, including different parts of the inter-event time distribution (IETD), the topology of the network and non-stationarity. In order to understand the role of these factors we study the SI model on
Dávid X Horváth, János Kertész
doaj   +1 more source

Asymptotic Behavior for Radially Symmetric Solutions of a Logistic Equation with a Free Boundary

open access: yesMathematical Modelling and Analysis, 2017
In this paper we investigate a logistic equation with a new free boundary condition appearing in ecology, we aim to describe the spreading of a new or invasive species by studying the asymptotic behavior of the radially symmetric solutions of the problem.
Jingjing Cai, Quanjun Wu
doaj   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola   +11 more
wiley   +1 more source

Flame spreading mechanisms over the methane hydrate surface

open access: yesJournal of Thermal Science and Technology
This study investigates the flame spreading mechanisms on the surface of methane hydrate using numerical simulations with the Fire Dynamics Simulator and Smokeview (FDS-SMV).
Otabek NIGMATOV   +2 more
doaj   +1 more source

Translating whole‐genome doubling into precision medicine in cancer

open access: yesMolecular Oncology, EarlyView.
Whole‐genome doubling creates a WGD‐positive tumor state characterized by persistent chromosomal instability, karyotypic diversification, and cellular stress. These same biological pressures drive aggressive tumor evolution while exposing therapeutic vulnerabilities, providing a rationale for WGD‐informed precision medicine. Whole‐genome doubling (WGD)
Sejung Lee, Junghyeok Lim, Jinhyuk Bhin
wiley   +1 more source

The Impact of Powder Delivery Process Parameters on Spreading Behaviour in Powder Bed Fusion Additive Manufacturing

open access: yesChemical Engineering Transactions
In this study, the effects of spreading speed and bed temperature on powder spreading in the Laser-Beam Powder Bed Fusion (PBF-LB) process were investigated. A purposely developed image analysis method was used to evaluate powder spread quality.
Bruno Nicola Dose   +4 more
doaj  

Behaviors of a micro oil droplet in an EHL contact

open access: yesFriction, 2016
Oil–air lubrication supplies lubricants in the form of droplets to elastohydrodynamic lubrication (EHL) contacts, such as those in high-speed spindle bearings.
Xinming Li   +4 more
doaj   +1 more source

Determiner spreading

open access: yes
Determiner spreading (or polydefiniteness or article doubling) is the phenomenon whereby the definite article appears before both the head noun and adjectival modifiers in definite noun phrases.
Karatsareas, P.
core   +1 more source

On a free boundary problem for a two-species weak competition system [PDF]

open access: yes, 2013
We study a Lotka–Volterra type weak competition model with a free boundary in a one-dimensional habitat. The main objective is to understand the asymptotic behavior of two competing species spreading via a free boundary.
Guo, Jong-shenq
core   +1 more source

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