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Thermodynamics of a Potts-like model for a reconstructed zigzag edge in graphen...
Rodrigues, J. N. B.; Gonçalves, P. A. D.; Santos, Jaime E.; Castro Neto, A. H.Versão 'draft' ; We construct a three-color Potts-like model for the graphene zigzag edge reconstructed with Stone-Wales carbon rings in order to study its thermal equilibrium properties. We consider two cases which have different ground states: the edge with nonpassivated dangling carbon bonds and the edge fully passivated with hydrogen. We study the concentration of defects perturbing the ground-state config...
Determinação de fósforo biodisponível em rações de peixes utilizando extração a...
Moraes,Paula M. de; Loureiro,Vanessa R.; Padilha,Pedro M.; Neves,Renato de Cássio F.; Saleh,Mayra A. D.; Santos,Felipe A. dos; Silva,Fábio A.The aim of the present work was to develop and optimize a method for determination of bioavailable phosphorus in samples of feces and fish feed using ultrasound extraction and subsequent quantification by visible spectrophotometry. Using as extractor solution HNO3 0.50 mol L-1, the great conditions of extraction established were: sample mass - 100 mg, samples granulometry - < 60 µm, sonification time - five cyc...
Finite element prediction of ductile fracture in sheet metal forming processes
Pedro Teixeira; A. D. Santos; F. M. Andrade Pires; J. M. A. César de Sá
Ontogenetic patterns and genetic variation in Anopheles (Anopheles) intermedius...
RODRIGUEZ,G. A. D.; SANTOS,J. M. M. dos; MAIA,J. de F.Changes in the expression of genes were observed during development in populations of Anopheles (Anopheles) intermedius and Anopheles (Anopheles) mattogrossensis. Esterase showed seven zones of activity: EST1 was present in all developmental stages of both species; EST2 was observed only in larvae of A. intermedius and larvae and pupae of A. mattogrossensis, with greater activity in pupae; EST3 and EST5 were pr...
Energy resolution of xenon proportional counters: Monte Carlo simulation and ex...
Rachinhas, P. J. B. M.; Dias, T. H. V. T.; Stauffer, A. D.; Santos, F. P.; Conde, C. A. N.The gas multiplication factor M and energy resolution R of xenon gas cylindrical proportional counters are investigated experimentally and calculated theoretically using a Monte Carlo technique to simulate the growth of single-electron-initiated avalanches. A good agreement is found between calculated and experimental data. The experimental and the calculated results are presented as a function of the reduced v...
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