Results 251 to 260 of about 3,630,144 (297)

Particle Transport and Deposition: Basic Physics of Particle Kinetics

Comprehensive Physiology, 2013
Abstract The human body interacts with the environment in many different ways. The lungs interact with the external environment through breathing. The enormously large surface area of the lung with its extremely thin air‐blood barrier is exposed to particles suspended in the inhaled air.
Akira, Tsuda, Frank S, Henry, James P, Butler   +2 more
openaire   +2 more sources

Particle transport in the Frascati Tokamak upgrade

Nuclear Fusion, 1996
Three methods of density modulation have been used in FTU discharges (gas puffing, pellet injection and current rampup). The analysis of particle balance confirms that the neoclassical theory is not adequate and the experimental results obtained by the three methods are used to verify the validity of an empirical expression for the radial particle flux.
Zanza, V, Segre, SE, Gabellieri, L, Alladio, F, Apicella, ML, Apruzzese, G, Bartiromo, R, Borra, M, Bracco, G, Buceti, G, Buratti, P, Centioli, C, Ciotti, M. :Cocilovo, V., Condrea, I., Crisanti, F., LDe Angelis, R., Esposito, B, Frattolillo, A., Frigione, D, Giovannozzi, E., Granucci, G., Grolli, M., Imparato, Kroegler, H, Leigheb, M, Lovisetto, L., Maddaluno, G, Mazzitelli, G, Micozzi, P, Migliori, S, MOLETI, ARTURO, Orsitto, F, Pacella, D, Panaccione, L, Panella, M, Pericoli, V, Pieroni, L, Podda, S, Righetti, G. B, Sternini, E, Tuccillo, A. A., Tudisco, O, Valente, F, Vitale, V, Zerbini, M.   +46 more
openaire   +4 more sources

Particle transport and heat loads in NIO1

Review of Scientific Instruments, 2015
NIO1 is a compact radio frequency ion source designed to generate a 60 kV-135 mA hydrogen negative ion beam and it aims at continuous operation, which implies a detailed thermo-mechanical analysis of the beam-facing components, in particular, the accelerator grids. A 3D analysis of the entire NIO1 beam has been performed for the first time with a fully
Fonnesu N, Cavenago M, Serianni G, Veltri P   +3 more
openaire   +7 more sources

Turbulent Particle Transport in Magnetized Plasmas

Physical Review Letters, 2003
Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an anomalous pinch. The curvature driven pinch velocity is consistent with the prediction of turbulence equipartition theory.
Garbet X, Garzotti L, Mantica P, Nordman H, Valovic M, Weisen H, Angioni C   +6 more
openaire   +4 more sources

Quantum adiabatic particle transport

Physical Review B, 1986
The problem of quantized adiabatic particle transport is studied for three classes of one-dimensional periodic potentials. In cases of periodically modulated potentials, the electron transport (in full bands) induced by the propagating modulation wave is shown to be given by a Diophantine equation.
openaire   +2 more sources

LINEAR TRANSPORT OF PARTICLES ON NETWORKS

Mathematical Models and Methods in Applied Sciences, 1996
We introduce a model of transport of particles in a network, which is represented by a connected graph with m vertices and n edges. Each edge represents a one-dimensional conductor of particles, whose behavior is described by means of a linear Boltzmann-like equation.
openaire   +2 more sources

Transport of particles in fluids

Physica A: Statistical Mechanics and its Applications, 2006
Abstract The interaction of moving fluids with particles is still only understood phenomenologically when the Reynolds number is not vanishing. I will present three different numerical studies all using the solver “fluent” which elucidate this issue from different points of view.
Hans J. Herrmann, José S. Andrade, Ascânio D. Araújo, Murilo P. Almeida   +3 more
openaire   +1 more source

Particle Transport of LHD

Fusion Science and Technology, 2010
Particle confinement processes are studied in detail on the Large Helical Device (LHD). Diffusion coefficients (D) and convection velocities (V) are estimated from density modulation experiments.
Tanaka, K., Kawahata, K., Tokuzawa, T., Akiyama, T., Yokoyama, M., Shoji, M., Michael, C. A., Vyacheslavov, L. N., Murakami, S., Wakasa, A., Mishchenko, A., Muraoka, K., Okajima, S., Takenaga, H.   +13 more
openaire   +2 more sources

Particle Transport

2023
Veronica Bindi, Mercedes Paniccia, Martin Pohl   +2 more
openaire   +1 more source

Transport of particles to surfaces

Journal of Aerosol Science, 1973
Abstract The rate of deposition of particles to smooth extended surfaces and horizontal filter paper has been measured in a large wind tunnel. The particles used covered the size range from 0·08 to 30 μm and the effect of wind speed was also investigated.
openaire   +1 more source