Results 11 to 20 of about 1,298 (98)

Lagrangian coherent structures in flow past a backward-facing step

open access: yesJournal of Fluid Mechanics, 2022
This paper investigates flow past a backward-facing step (BFS) in a duct at Reynolds number $Re = 5080$ based on step height, mean inflow velocity and fluid kinematic viscosity. The flow configuration matches a combustion experiment conducted by Pitz and
Chenyang Huang   +2 more
semanticscholar   +1 more source

Analysis of Nanofluid Particles in a Duct with Thermal Radiation by Using an Efficient Metaheuristic-Driven Approach

open access: yesNanomaterials, 2022
This study investigated the steady two-phase flow of a nanofluid in a permeable duct with thermal radiation, a magnetic field, and external forces. The basic continuity and momentum equations were considered along with the Buongiorno model to formulate ...
N. Khan   +3 more
semanticscholar   +1 more source

Under-ice acoustic navigation using real-time model-aided range estimation.

open access: yesJournal of the Acoustical Society of America, 2022
The long baseline (LBL) underwater navigation paradigm relies on the conversion of travel times into pseudoranges to trilaterate position. For real-time autonomous underwater vehicle (AUV) operations, this conversion assumes an isovelocity sound speed ...
E. Bhatt, Oscar A. Víquez, H. Schmidt
semanticscholar   +1 more source

O(2) Hopf bifurcation of viscous shock waves in a channel [PDF]

open access: yes, 2014
Extending work of Texier and Zumbrun in the semilinear non-re ection symmetric case, we study O(2) transverse Hopf bifurcation, or \cellular instability," of viscous shock waves in a channel, for a class of quasilinear hyperbolic{parabolic systems ...
A. Pogan, Jinghua Yao, K. Zumbrun
semanticscholar   +1 more source

Dynamics of spinning test particles in Kerr spacetime [PDF]

open access: yes, 2002
We investigate the dynamics of relativistic spinning test particles in the spacetime of a rotating black hole using the Papapetrou equations. We use the method of Lyapunov exponents to determine whether the orbits exhibit sensitive dependence on initial ...
Hartl, Michael D.
core   +2 more sources

One-dimensional disordered quantum mechanics and Sinai diffusion with random absorbers [PDF]

open access: yes, 2013
We study the one-dimensional Schr\"odinger equation with a disordered potential of the form $V (x) = \phi(x)^2+\phi'(x) + \kappa(x) $ where $\phi(x)$ is a Gaussian white noise with mean $\mu g$ and variance $g$, and $\kappa(x)$ is a random superposition ...
Grabsch, Aurélien   +2 more
core   +5 more sources

Asymptotic analysis of endemic equilibrium to a brucellosis model.

open access: yesMathematical biosciences and engineering : MBE, 2019
Brucellosis is one of the worlds major infectious and contagious bacterial disease. In order to study different types of brucellosis transmission models among sheep, we propose a deterministic model to investigate the transmission dynamics of brucellosis
Ming Li, Xin Pei, Juan Zhang, Li Li
semanticscholar   +1 more source

Chemotherapy models

open access: yesARIMA J., 2020
RÉSUMÉ. Nous considérons un modèle de chimiothérapie pour une population de cellules avec ré-sistance. Nous considérons le cas de deux médicaments le premier avec effet impulsif et le deuxème avec effet continu. Nous étudions la stabilité des solutions p’
F. Charif, M. Helal, Abdelkader Lakmeche
semanticscholar   +1 more source

Stationary solutions for the Cahn-Hilliard equation [PDF]

open access: yes, 1998
We study the Cahn-Hilliard equation in a bounded domain without any symmetry assumptions. We assume that the mean curvature of the boundary has a nongenerate critical point.
Wei, J, Winter, M
core   +2 more sources

Spatial Transcriptomics of Intraductal Papillary Mucinous Neoplasms of The Pancreas Identifies NKX6-2 as a Driver of Gastric Differentiation and Indolent Biological Potential

open access: yesbioRxiv, 2023
Intraductal Papillary Mucinous Neoplasms (IPMNs) of the pancreas are bona fide precursor lesions of pancreatic ductal adenocarcinoma (PDAC). The most common subtype of IPMNs harbor a gastric foveolar-type epithelium, and these low-grade mucinous ...
Marta Sans   +14 more
semanticscholar   +1 more source

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