3,909 research outputs found
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: a homogeneous
field inside the tube, a field proportional to and a
cylindrical shell with -function. In these three cases, the axis of the
infinitely long tube of radius 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.
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