The Experts below are selected from a list of 145356 Experts worldwide ranked by ideXlab platform
Hideo Sekiguchi - One of the best experts on this subject based on the ideXlab platform.
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progressive solidification of a liquefied sand layer during continued wave loading
Geotechnique, 2004Co-Authors: Junji Miyamoto, Shinji Sassa, Hideo SekiguchiAbstract:A theoretical model for progressive solidification is described. It reproduces the Experimental Finding, from centrifugal wave tank testing with viscous scaling, that a layer of liquefied sand soli...
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progressive solidification of a liquefied sand layer during continued wave loading
Geotechnique, 2004Co-Authors: Junji Miyamoto, Shinji Sassa, Hideo SekiguchiAbstract:A theoretical model for progressive solidification is described. It reproduces the Experimental Finding, from centrifugal wave tank testing with viscous scaling, that a layer of liquefied sand solidifies progressively from the base up while severe fluid-wave loading is imposed over a prolonged period of time. The solidification process reestablishes a grain-supported framework in the transitory fluid-like soil and is accompanied by the marked densification and gradual dissipation of excess pore pressures in a zone immediately below the upward-advancing solidification front. The continued disturbances to liquefied soil in the form of wave loading are an effective means for loosening the interlocking of solid particles, and permit rearrangement into a state of remarkably dense compaction due to contractancy. These aspects of soil behaviour are accentuated through comparison with consolidation in quiescent conditions following liquefaction. Furthermore, the proposed rigorous treatment of solidification as a ...
Tobias Fischer - One of the best experts on this subject based on the ideXlab platform.
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low momentum pion enhancement from schematic hadronization of a gluon saturated initial state
arXiv: High Energy Physics - Phenomenology, 2019Co-Authors: Elizaveta Nazarova, łukasz Juchnowski, D Blaschke, Tobias FischerAbstract:We study the particle production in the early stage of the ultrarelativistic heavy-ion collisions. To this end the Boltzmann kinetic equations for gluons and pions with elastic rescattering are considered together with a simple model for the parton-hadron conversion process (hadronisation). It is shown that the overpopulation of the gluon phase space in the initial state leads to an intermediate stage of Bose enhancement in the low-momentum gluon sector which due to the gluon-pion conversion process is then reflected in the final distribution function of pions. This pattern is very similar to the Experimental Finding of a low-momentum pion enhancement in the ALICE experiment at CERN LHC. Relations to the thermal statistical model of hadron production and the phenomenon of thermal and chemical freeze-out are discussed in this context.
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low momentum pion enhancement from schematic hadronization of a gluon saturated initial state
Particles, 2019Co-Authors: Elizaveta Nazarova, łukasz Juchnowski, D Blaschke, Tobias FischerAbstract:We study the particle production in the early stage of the ultrarelativistic heavy-ion collisions. To this end the Boltzmann kinetic equations for gluons and pions with elastic rescattering are considered together with a simple model for the parton-hadron conversion process (hadronisation). It is shown that the overpopulation of the gluon phase space in the initial state leads to an intermediate stage of Bose enhancement in the low-momentum gluon sector which due to the gluon-pion conversion process is then reflected in the final distribution function of pions. This pattern is very similar to the Experimental Finding of a low-momentum pion enhancement in the ALICE experiment at the CERN Large Hadron Collider (LHC). Relations to the thermal statistical model of hadron production and the phenomenon of thermal and chemical freeze-out are discussed in this context.
Yuri N Antonenko - One of the best experts on this subject based on the ideXlab platform.
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the size of the unstirred layer as a function of the solute diffusion coefficient
Biophysical Journal, 1998Co-Authors: Peter Pohl, Sapar M Saparov, Yuri N AntonenkoAbstract:By monitoring the concentration distribution of several solutes that are diffusing at the same time under given mixing conditions, it was established that the unstirred layer (USL) has no clearly defined boundary. For the cases of solute permeation and water movement across planar bilayer lipid membranes, respectively, experiments carried out with double-barreled microelectrodes have shown that the thickness of the USL depends on which species is diffusing. Small molecules with a larger diffusion coefficient encounter an apparently thicker USL than larger molecules with a smaller diffusion coefficient. The ratio of the USL thicknesses of two different substances is equal to the third root of the ratio of the respective diffusion coefficients. This Experimental Finding is in good agreement with theoretical predictions from the theory of physicochemical hydrodynamics.
M S Si - One of the best experts on this subject based on the ideXlab platform.
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crystal momentum dispersion of ultrafast spin change in fcc co
Scientific Reports, 2015Co-Authors: M S Si, Juzuo Li, Dezheng Yang, G P ZhangAbstract:Nearly twenty years ago, Beaurepaire and coworkers showed that when an ultrafast laser impinges on a ferromagnet, its spin moment undergoes a dramatic change, but how it works remains a mystery. While the current experiment is still unable to resolve the minute details of the spin change, crystal momentum-resolved techniques have long been used to analyze the charge dynamics in superconductors and strongly correlated materials. Here we extend it to probe spin moment change in the entire three-dimensional Brillouin zone for fcc Co. Our results indeed show a strong spin activity along the Δ line, supporting a prior Experimental Finding. The spin active pockets coalesce into a series of spin surfaces that follow the Fermi surfaces. We predict two largest spin change pockets which have been elusive to experiments: one pocket is slightly below the Δ line and the other is along the Λ line and close to the L point. Our theory presents an opportunity for the time-, spin- and momentum-resolve photoemission technique.
Junji Miyamoto - One of the best experts on this subject based on the ideXlab platform.
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progressive solidification of a liquefied sand layer during continued wave loading
Geotechnique, 2004Co-Authors: Junji Miyamoto, Shinji Sassa, Hideo SekiguchiAbstract:A theoretical model for progressive solidification is described. It reproduces the Experimental Finding, from centrifugal wave tank testing with viscous scaling, that a layer of liquefied sand soli...
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progressive solidification of a liquefied sand layer during continued wave loading
Geotechnique, 2004Co-Authors: Junji Miyamoto, Shinji Sassa, Hideo SekiguchiAbstract:A theoretical model for progressive solidification is described. It reproduces the Experimental Finding, from centrifugal wave tank testing with viscous scaling, that a layer of liquefied sand solidifies progressively from the base up while severe fluid-wave loading is imposed over a prolonged period of time. The solidification process reestablishes a grain-supported framework in the transitory fluid-like soil and is accompanied by the marked densification and gradual dissipation of excess pore pressures in a zone immediately below the upward-advancing solidification front. The continued disturbances to liquefied soil in the form of wave loading are an effective means for loosening the interlocking of solid particles, and permit rearrangement into a state of remarkably dense compaction due to contractancy. These aspects of soil behaviour are accentuated through comparison with consolidation in quiescent conditions following liquefaction. Furthermore, the proposed rigorous treatment of solidification as a ...
