نتایج جستجو برای: shrinking core

تعداد نتایج: 220957  

2001
T. J. Mahoney

Coupling the dark matter (DM) and baryonic components in galaxies via dynamical friction (by allowing the latter to be clumpy) leads to energy input into the DM. The resulting expanding tendency in the DM component overcomes the competing effect of adiabatic contraction, resulting from the shrinking gas component, and leads to a nearly constant density core. The baryonic mass inflow also leads ...

2004
Daniel R. Parisi Miguel A. Laborde

In this work, the shaft furnace reactor of the MIDREX® process is simulated. This is a counter current gas-solid reactor, which transforms iron ore pellets into sponge iron. Simultaneous mass and energy balance along the reactor leads to a set of ordinary differential equation with two points boundary conditions. The iron ore reduction kinetics was modelated with the unreacted shrinking core mo...

Journal: :International Journal of Environmental Research and Public Health 2020

2008
Lei Ni Nolan Wallach John Lott N. Wallach

In this paper, we classify the four-dimensional gradient shrinking solitons under certain curvature conditions satisfied by all solitons arising from finite-time singularities of Ricci flow on compact four-manifolds with positive isotropic curvature. As a corollary, we generalize a result of Perelman on three-dimensional gradient shrinking solitons to dimension four.

Journal: :Topology and its Applications 1996

2006
Aline Gouget Hervé Sibert

Sequence compression is one of the most promising tools for strengthening pseudo-random generators used in stream ciphers. Indeed, adding compression components can thwart algebraic attacks aimed at LFSR-based stream ciphers. Among such components are the Shrinking Generator and the Self-Shrinking Generator, as well as recent variations on Bit-Search-based decimation. We propose a general model...

Journal: :Nano letters 2015
Kai He Huolin L Xin Kejie Zhao Xiqian Yu Dennis Nordlund Tsu-Chien Weng Jing Li Yi Jiang Christopher A Cadigan Ryan M Richards Marca M Doeff Xiao-Qing Yang Eric A Stach Ju Li Feng Lin Dong Su

Nanoparticle electrodes in lithium-ion batteries have both near-surface and interior contributions to their redox capacity, each with distinct rate capabilities. Using combined electron microscopy, synchrotron X-ray methods and ab initio calculations, we have investigated the lithiation pathways that occur in NiO electrodes. We find that the near-surface electroactive (Ni(2+) → Ni(0)) sites sat...

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