62 research outputs found
Percolation and epidemics in a two-dimensional small world
Percolation on two-dimensional small-world networks has been proposed as a
model for the spread of plant diseases. In this paper we give an analytic
solution of this model using a combination of generating function methods and
high-order series expansion. Our solution gives accurate predictions for
quantities such as the position of the percolation threshold and the typical
size of disease outbreaks as a function of the density of "shortcuts" in the
small-world network. Our results agree with scaling hypotheses and numerical
simulations for the same model.Comment: 7 pages, 3 figures, 2 table
Effect of the chronic treatment with aqueous extract of Caesalpinia ferrea and Chrysobalanus icaco on the vascular reactivity of diabetic rats
Caesalpinia ferrea and Chrysobalanus icaco are plants commonly used by the folk medicine for the treatment of diabetes mellitus. In this work, the effects of the chronic treatment with aqueous extracts of C. ferrea (AECF) and C. icaco (AECI) on the vascular reactivity of alloxan-induced diabetic rats were evaluated. In rings of mesenteric artery, AECF and AECI were not able to modify the contractions induced by phenylephrine or relaxations induced by carbachol. However, treatment with AECI was able to prevent the potentiation of the relaxations induced by sodium nitroprusside in diabetic rats. In brief, this study found possible benefits of the treatment with C. icaco on the reactivity vascular of diabetic rats.Colegio de Farmacéuticos de la Provincia de Buenos Aire
Efeito de óleos essenciais como alternativa no controle de Colletotrichum gloeosporioides, em pimenta
Dinâmica populacional da mosca-negra-dos-citros Aleurocanthus woglumi ashby (hemiptera: aleyrodidae) em Citrus spp. no município de São Luís - MA
Perfil clínico e imunológico de bovinos experimentalmente inoculados com veneno bruto e iodado de Bothrops alternatus
Mineralogia e reserva de K de Cambissolos submetidos a diferentes manejos após derrubada e queima da floresta na Amazônia Meridional
EFEITO DA TEMPERATURA E DO USO DE EMBALAGEM NA CONSERVAÇÃO PÓS-COLHEITA DE FRUTOS DE CAGAITA (Eugenia dysentericaDC.)
Porcine follicular fluid concentration of free insulin-like growth factor-I collected from different diameter ovarian follicles
Fertilidade do solo e produtividade de milho em sistemas de adubação verde no norte de Minas Gerais
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