3,047 research outputs found
Logarithmic corrections to gap scaling in random-bond Ising strips
Numerical results for the first gap of the Lyapunov spectrum of the self-dual
random-bond Ising model on strips are analysed. It is shown that finite-width
corrections can be fitted very well by an inverse logarithmic form, predicted
to hold when the Hamiltonian contains a marginal operator.Comment: LaTeX code with Institute of Physics macros for 7 pages, plus 2
Postscript figures; to appear in Journal of Physics A (Letter to the Editor
Efeito da aplicação de cobertura comestível sobre a acidez de minimilho minimamente processado.
Teor de sólidos solúveis totais em minimilho revestido com cobertura comsetível de fécula de mandioca.
On weak vs. strong universality in the two-dimensional random-bond Ising ferromagnet
We address the issue of universality in two-dimensional disordered Ising
systems, by considering long, finite-width strips of ferromagnetic Ising spins
with randomly distributed couplings. We calculate the free energy and spin-spin
correlation functions (from which averaged correlation lengths, ,
are computed) by transfer-matrix methods. An {\it ansatz} for the
size-dependence of logarithmic corrections to is proposed. Data for
both random-bond and site-diluted systems show that pure system behaviour (with
) is recovered if these corrections are incorporated, discarding the
weak--universality scenario.Comment: RevTeX code, 4 pages plus 2 Postscript figures; to appear in Physical
Review B Rapid Communication
Perda de massa no armazenamento de minimilho revestidos com cobertura comestível de fécula de mandioca.
Composição florística e estrutura de floresta em várzea alta estuarina amazônica.
O presente estudo foi desenvolvido objetivando avaliar a composição florística e a estrutura de floresta de várzea alta do estuário amazônico. Uma parcela amostral de 1,0 ha, divida em subparcelas de 20 x 50 m, foi instalada no Bailique/AP, furo do Mazagão/PA e medidos os indivíduos com DAP..
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