207 research outputs found
Programa de integração comunitåria: em busca de novas estratégias e novos sentidos à vida
Meiotic behavior of interspecific hybrids between artificially tetraploidized sexual Brachiaria ruziziensis and tetraploid apomictic B. brizantha (Poaceae)
O enfermeiro na vigilĂąncia epidemiolĂłgica no municĂpio de RibeirĂŁo Preto 1988-1996
Absorbing-state phase transitions in fixed-energy sandpiles
We study sandpile models as closed systems, with conserved energy density
playing the role of an external parameter. The critical energy density,
, marks a nonequilibrium phase transition between active and absorbing
states. Several fixed-energy sandpiles are studied in extensive simulations of
stationary and transient properties, as well as the dynamics of roughening in
an interface-height representation. Our primary goal is to identify the
universality classes of such models, in hopes of assessing the validity of two
recently proposed approaches to sandpiles: a phenomenological continuum
Langevin description with absorbing states, and a mapping to driven interface
dynamics in random media. Our results strongly suggest that there are at least
three distinct universality classes for sandpiles.Comment: 41 pages, 23 figure
Degradation and sorption of fipronil and atrazine in Latossols with organic residues from sugarcane crop
Percepção dos gestores do Sistema Ănico de SaĂșde acerca dos desafios da formação das Redes de Atenção Ă SaĂșde no Brasil
AVALIAĂĂO TEMPORAL DA UMIDADE DO SOLO COMO CONSEQĂĂNCIA DO TIPO E PERCENTAGEM DE COBERTURA VEGETAL
Demanda por doenças crĂŽnico-degenerativas entre adultos matriculados em uma unidade bĂĄsica de saĂșde em SĂŁo Carlos - SP
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