Anuário estatístico - suinocultura: central de inteligência da Embrapa Suínos e Aves.

bitstream/item/46832/1/Documento-146.pdfProjeto: 04.08.08.017

Anuário estatístico - avicultura: central de inteligência da Embrapa Suínos e Aves.

bitstream/item/46877/1/Documento-147.pdfProjeto: 04.08.08.017

Fenologia reprodutiva de Couratari stellata A. C. Smith.

Anais do CONGRESSO NACIONAL SOBRE ESSÊNCIAS NATIVAS, 2., 1992, São Paulo, SP

A novel copper precursor for electron beam induced deposition

A fluorine free copper precursor, Cu(tbaoac)2 with the chemical sum formula CuC16O6H26 is introduced for focused electron beam induced deposition (FEBID). FEBID with 15 keV and 7 nA results in deposits with an atomic composition of Cu:O:C of approximately 1:1:2. Transmission electron microscopy proved that pure copper nanocrystals with sizes of up to around 15 nm were dispersed inside the carbonaceous matrix. Raman investigations revealed a high degree of amorphization of the carbonaceous matrix and showed hints for partial copper oxidation taking place selectively on the surfaces of the deposits. Optical transmission/reflection measurements of deposited pads showed a dielectric behavior of the material in the optical spectral range. The general behavior of the permittivity could be described by applying the Maxwell–Garnett mixing model to amorphous carbon and copper. The dielectric function measured from deposited pads was used to simulate the optical response of tip arrays fabricated out of the same precursor and showed good agreement with measurements. This paves the way for future plasmonic applications with copper-FEBID

Localized states at zigzag edges of bilayer graphene

We report the existence of zero energy surface states localized at zigzag edges of bilayer graphene. Working within the tight-binding approximation we derive the analytic solution for the wavefunctions of these peculiar surface states. It is shown that zero energy edge states in bilayer graphene can be divided into two families: (i) states living only on a single plane, equivalent to surface states in monolayer graphene; (ii) states with finite amplitude over the two layers, with an enhanced penetration into the bulk. The bulk and surface (edge) electronic structure of bilayer graphene nanoribbons is also studied, both in the absence and in the presence of a bias voltage between planes.Comment: 4 pages, 5 figure

Prospecção de espécies nativas de peixes como alternativas à indústria conserveira de pescado.

o objetivo deste estudo foi prospectar para a indústria conserveira de pescado espécies nativas de peixes, como alternativa para o processo de enlatamento