Potencial alelopático de catequinas de Tachigali myrmecophyla (leguminosae).

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Diagnóstico e tratamento da mastite.

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Fano resonances in plasmonic core-shell particles and the Purcell effect

Despite a long history, light scattering by particles with size comparable with the light wavelength still unveils surprising optical phenomena, and many of them are related to the Fano effect. Originally described in the context of atomic physics, the Fano resonance in light scattering arises from the interference between a narrow subradiant mode and a spectrally broad radiation line. Here, we present an overview of Fano resonances in coated spherical scatterers within the framework of the Lorenz-Mie theory. We briefly introduce the concept of conventional and unconventional Fano resonances in light scattering. These resonances are associated with the interference between electromagnetic modes excited in the particle with different or the same multipole moment, respectively. In addition, we investigate the modification of the spontaneous-emission rate of an optical emitter at the presence of a plasmonic nanoshell. This modification of decay rate due to electromagnetic environment is referred to as the Purcell effect. We analytically show that the Purcell factor related to a dipole emitter oriented orthogonal or tangential to the spherical surface can exhibit Fano or Lorentzian line shapes in the near field, respectively.Comment: 28 pages, 10 figures; invited book chapter to appear in "Fano Resonances in Optics and Microwaves: Physics and Application", Springer Series in Optical Sciences (2018), edited by E. O. Kamenetskii, A. Sadreev, and A. Miroshnichenk

A (re) organização espacial da Comunidade Tradicional de Antônio Maria Coelho, Corumbá/MS.

O estudo tem como propósito a compreensão da (re) organização da comunidade tradicional de Antônio Maria Coelho (AMC), bem como do potencial de ampliação do extrativismo agroecológico da bocaíuva. Utilizou-se a metodologia de diagnóstico rural participativo com técnicas de observação participante e entrevistas semi-estruturadas. A comunidade possui características rurais, com as moradias parcialmente dispersas em grupos. Observam-se constantes mudanças na dinâmica socioespacial da comunidade de AMC. Estas mudanças estão relacionadas com a pressão econômica proporcionada pela instalação de empresas mineradoras na região, provocando alteração no espaço e a busca de novas formas de organização social. The study has as purpose a understanding the (re) organization of traditional community by Antônio Maria Coelho (AMC) with a view to subsidize the potential of enlargement from extrativism agroecologic the bocaiúva. Being used the methodology to diagnosis participatory rural with observation techniques participant and semi-structured interviews The community has rural characteristics, with the housing partially dispersed in groups. Constant changes are observed in the dynamics of socio-community AMC. These changes are related to the economic pressure provided by the installation of mining companies in the region, causing changes in space and the search for new forms of social organization.Título em inglês: The spatial (re) organization of Traditional Community by Antônio Maria Coelho, Corumbá / MS