Umbilicity of constant mean curvature hypersurfaces into space forms

In this paper we establish conditions on the length of the traceless part of the second fundamental form of a complete constant mean curvature hypersurface immersed in a space of constant sectional curvature in order to show that it is totally umbilical.Comment: 14 pages, comments welcom

Desenvolvimento de páginas web com Gimp auxiliado pelo componente Firebug.

A construção de páginas web requer conhecimentos de design, domínio de ferramentas para edição de imagem e editoração, além da capacidade de valorizar a imagem da organização por meio de elementos gráficos. O designer deve ser capaz de identificar a melhor e mais adequada combinação de cores possível, obedecendo a harmonia e os padrões de acessibilidade da World Wide Web Consortium - W3C (W3C, 2010)

Efeito do porta-enxerto na formação de mudas de cajueiro anão precoce cultivadas em tubetes e submetidas a diferentes doses de adubo foliar.

O objetivo do presente trabalho e estudar o comportamento de quatro porta-enxertos com relacao a contribuicao de cada um deles na nutricao, como tambem testar o efeito da adubacao via foliar ...bitstream/CNPAT-2010/5387/1/Pa-069.pd

Qualidade de pedúnculo de cajueiro-anão precoce cultivado sob irrigação e submetido a diferentes sistemas de condução e espaçamento.

bitstream/CNPAT/7857/1/ct_72.pd

Global aspects of gravitomagnetism

We consider global properties of gravitomagnetism by investigating the gravitomagnetic field of a rotating cosmic string. We show that although the gravitomagnetic field produced by such a configuration of matter vanishes locally, it can be detected globally. In this context we discuss the gravitational analogue of the Aharonov-Bohm effect.Comment: 10 pages - Typeset using REVTE

Práticas milenares de pesca no Pantanal.

bitstream/item/79976/1/ADM141.pdfFormato eletronico. Disponivel em: Agência Pantanal, Meat World, Aqui e destaque, Canal do produtor, Infobibos, Rios Vivos, Campo Grande News, Maracaju News, Conheça o Pantanal, MS Notícias, Agora MS

Vacuum Polarization by a Magnetic Flux Tube at Finite Temperature in the Cosmic String Spacetime

In this paper we analyse the effect produced by the temperature in the vacuum polarization associated with charged massless scalar field in the presence of magnetic flux tube in the cosmic string spacetime. Three different configurations of magnetic fields are taken into account: $(i)$ a homogeneous field inside the tube, $(ii)$ a field proportional to $1/r$ and $(iii)$ a cylindrical shell with $\delta$-function. In these three cases, the axis of the infinitely long tube of radius $R$ coincides with the cosmic string. Because the complexity of this analysis in the region inside the tube, we consider the thermal effect in the region outside. In order to develop this analysis, we construct the thermal Green function associated with this system for the three above mentioned situations considering points in the region outside the tube. We explicitly calculate in the high-temperature limit, the thermal average of the field square and the energy-momentum tensor.Comment: 16 pages, 1 figur

Self-similar magnetoresistance of Fibonacci ultrathin magnetic films

We study numerically the magnetic properties (magnetization and magnetoresistance) of ultra-thin magnetic films (Fe/Cr) grown following the Fibonacci sequence. We use a phenomenological model which includes Zeeman, cubic anisotropy, bilinear and biquadratic exchange energies. Our physical parameters are based on experimental data recently reported, which contain biquadratic exchange coupling with magnitude comparable to the bilinear exchange coupling. When biquadratic exchange coupling is sufficiently large a striking self-similar pattern emerges.Comment: 5 pages, 5 EPS figures, REVTeX, accepted for publication in Phys. Rev.