Results 51 to 60 of about 1,255,021 (195)

Characterization of particle deposition in a lung model using an individual path

open access: yesEPJ Web of Conferences, 2013
Suspended particles can cause a wide range of chronic respiratory illnesses such as asthma and chronic obstructive pulmonary diseases, as well as worsening heart conditions and other conditions. To know the particle depositions in realistic models of the
Ferrera C.   +4 more
doaj   +1 more source

Translatory and rotatory motion of exchange-bias capped Janus particles controlled by dynamic magnetic field landscapes

open access: yesScientific Reports, 2021
Magnetic Janus particles (MJPs), fabricated by covering a non-magnetic spherical particle with a hemispherical magnetic in-plane exchange-bias layer system cap, display an onion magnetization state for comparably large diameters of a few microns. In this
Rico Huhnstock   +8 more
doaj   +1 more source

Slipping motion of large neutrally-buoyant particles in turbulence

open access: yes, 2013
Direct numerical simulations are used to investigate the individual dynamics of large spherical particles suspended in a developed homogeneous turbulent flow.
Bec, Jeremie   +2 more
core   +1 more source

Crowding of Brownian spheres [PDF]

open access: yes, 2010
We study two models consisting of reflecting one-dimensional Brownian "particles" of positive radius. We show that the stationary empirical distributions for the particle systems do not converge to the harmonic function for the generator of the ...
Burdzy, Krzysztof   +2 more
core   +3 more sources

Gibbs phenomenon and the emergence of the steady-state in quantum transport

open access: yes, 2019
Simulations are increasingly employing explicit reservoirs - internal, finite regions - to drive electronic or particle transport. This naturally occurs in simulations of transport via ultracold atomic gases.
Zwolak, Michael
core   +1 more source

A modified particle swarm optimization algorithm based on velocity updating mechanism

open access: yesAin Shams Engineering Journal, 2019
Due to less parameters and simple operations in PSO, PSO has attracted the attention of many researchers. However, it amy fall into local optimum and the search precision is not high. Therefore, this paper introduces an improved PSO (CNPSO).
Chunfeng Wang, Wenxin Song
doaj   +1 more source

Intrinsic speckle noise in in-line particle holography due to poly-disperse and continuous particle sizes [PDF]

open access: yes, 2000
In-line particle holography is subject to image deterioration due to intrinsic speckle noise. The resulting reduction in the signal to noise ratio (SNR) of the replayed image can become critical for applications such as holographic particle velocimetry ...
Edwards, PJ, Hobson, PR, Rodgers, GJ
core  

Size Uncertainty in Individual Nanoparticles Measured by Single Particle Inductively Coupled Plasma Mass Spectrometry

open access: yesNanomaterials, 2023
Single particle inductively coupled plasma mass spectrometry has been used for size measurements of individual nanoparticles (NPs). Here, uncertainties in size analysis based upon two calibration approaches were evaluated: (i) the use of particle size ...
Shuji Yamashita   +2 more
doaj   +1 more source

A Multipopulation PSO Based Memetic Algorithm for Permutation Flow Shop Scheduling

open access: yesThe Scientific World Journal, 2013
The permutation flow shop scheduling problem (PFSSP) is part of production scheduling, which belongs to the hardest combinatorial optimization problem.
Ruochen Liu   +3 more
doaj   +1 more source

A novel coupled fluid-behavior model for simulating dynamic huddle formation. [PDF]

open access: yesPLoS ONE, 2018
A coupled numerical model is developed to examine aggregative behavior in instances where the behavior not only responds to the environment, but the environment responds to the behavior such as fish schooling and penguin huddling.
Wen Gu   +2 more
doaj   +1 more source

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