12,056 research outputs found
Insetos-praga associados à cultura do milho em Sergipe.
bitstream/CPATC-2010/20652/1/ct-56.pd
Counterions at charge-modulated substrates
We consider counterions in the presence of a single planar surface with a
spatially inhomogeneous charge distribution using Monte-Carlo simulations and
strong-coupling theory. For high surface charges, multivalent counterions, or
pronounced substrate charge modulation the counterions are laterally correlated
with the surface charges and their density profile deviates strongly from the
limit of a smeared-out substrate charge distribution, in particular exhibiting
a much increased laterally averaged density at the surface.Comment: 7 page
Ocorrência, danos e alternativas de controle da mosca-branca, Aleurothrixus aepim (Goeldi, 1886) na cultura da mandioca em Sergipe.
bitstream/CPATC-2009-09/20524/1/ct-42.pd
Universal reduction of pressure between charged surfaces by long-wavelength surface charge modulation
We predict theoretically that long-wavelength surface charge modulations
universally reduce the pressure between the charged surfaces with counterions
compared with the case of uniformly charged surfaces with the same average
surface charge density. The physical origin of this effect is the fact that
surface charge modulations always lead to enhanced counterion localization near
the surfaces, and hence, fewer charges at the midplane. We confirm the last
prediction with Monte Carlo simulations.Comment: 8 pages 1 figure, Europhys. Lett., in pres
Avaliação de genótipos de coqueiro, Cocos nucifera (L.) quanto à infestação da falsa barata, coraliomela brunnea Thunberg (1821) (Coleoptera: Chrysomelidae) no estado de Sergipe.
bitstream/CPATC-2009-09/20525/1/ct-43.pd
Canalizing Kauffman networks: non-ergodicity and its effect on their critical behavior
Boolean Networks have been used to study numerous phenomena, including gene
regulation, neural networks, social interactions, and biological evolution.
Here, we propose a general method for determining the critical behavior of
Boolean systems built from arbitrary ensembles of Boolean functions. In
particular, we solve the critical condition for systems of units operating
according to canalizing functions and present strong numerical evidence that
our approach correctly predicts the phase transition from order to chaos in
such systems.Comment: to be published in PR
Obtenção de adultos e aspectos biológicos da broca-do-mamoeiro, Pseudopiazurus obesus (GOHEMAN, 1838) (Coleoptera: Curculionidade).
bitstream/CPATC/19910/1/bp-32.pd
Atratividade dos compostos feromonais na captura da broca-do-mamoeiro Pseudopiazurus obesus (Boheman, 1838) (Coleoptera: Curculionidae) em condições de campo.
bitstream/CPATC/19909/1/bp-31.pd
Manejo e controle das principais pragas da cultura do arroz irrigado na região do baixo São Francisco.
bitstream/item/64533/1/CPATC-DOCUMENTOS-70-MANEJO-E-CONTROLE-DAS-PRINCIPAIS-PRAGAS-DA-CULTURA-DO-ARROZ-IRRIGADO-NA-REGIA.pd
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