Results 21 to 30 of about 1,303,085 (296)
Noise Kernel and Stress Energy Bi-Tensor of Quantum Fields in Hot Flat Space and Gaussian Approximation in the Optical Schwarzschild Metric [PDF]
, 2002 Continuing our investigation of the regularization of the noise kernel in curved spacetimes [N. G. Phillips and B. L. Hu, Phys. Rev. D {\bf 63}, 104001 (2001)] we adopt the modified point separation scheme for the class of optical spacetimes using the ...
A. Campos +65 more
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Visualizing Spacetime Curvature via Frame-Drag Vortexes and Tidal Tendexes II. Stationary Black Holes [PDF]
, 2012 When one splits spacetime into space plus time, the Weyl curvature tensor (which equals the Riemann tensor in vacuum) splits into two spatial, symmetric, traceless tensors: the tidal field $E$, which produces tidal forces, and the frame-drag field $B ...
Chen, Yanbei +7 more
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Adsorção de nitrato em solos com cargas variáveis Nitrate adsorption in variable charged soils
Pesquisa Agropecuária Brasileira, 2005 O objetivo deste trabalho foi avaliar o comportamento adsortivo do nitrato em relação às modificações da carga líquida do solo decorrentes da adição de ácidos, bases (carbonatos), fosfato e sulfato.
Marco Aurélio Kondracki de Alcântara +1 more
doaj +1 more source
Scientia Agricola, 2020 The occurrence of dark subsurface horizons rich in organic matter (OM) associated with polychrome in the B horizon (yellowish over reddish hue) is common in soils from Southern Brazil.
Mariane Chiapini +5 more
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Black-hole horizon and metric singularity at the brane separating two sliding superfluids [PDF]
, 2002 An analog of black hole can be realized in the low-temperature laboratory. The horizon can be constructed for the `relativistic' ripplons (surface waves) living on the brane. The brane is represented by the interface between two superfluid liquids, 3He-A
G. E. Volovik +4 more
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Phantom energy and the Cosmic Horizon: Rh is still not a horizon! [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2013 Abstract There has been a recent spate of papers on the Cosmic Horizon, an apparently fundamental, although unrecognized, property of the universe. The misunderstanding of this horizon, it is claimed, demonstrates that our determination of the cosmological makeup of the universe is incorrect, although several papers have pointed out key ...
openaire +2 more sources
Revista Brasileira de Engenharia Agrícola e Ambiental, 2009 Coastal Tableland is a landscape unit in the North East of Brazil in which the main soils are Ultisols. In these soils, a compacted layer denominated "cohesive horizon" occurs and root growth is limited by it.
Lafayette F. Sobral +2 more
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Soil Systems, 2020 As acidic deposition has decreased across Eastern North America, forest soils at some sites are beginning to show reversal of soil acidification. However, the degree of recovery appears to vary and is not fully explained by deposition declines alone.
Paul Hazlett +5 more
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Bulletin de l'Institut Français d'Études Andines, 2023 During the third and fourth epochs of the Middle Horizon, the sanctuary of Pachacamac began to have regional prestige that later increased in the Late Intermediate Period and Late Horizon.
Jesús A. Ramos Giraldo +1 more
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Probing the Holography of Near-Horizon AdS(5)xS(5) Geometry [PDF]
, 2003 Using the AdS/CFT correspondence we study the holographic principle and the CFT/FRW relations in the near-horizon AdS(5)xS(5) geometry with a probe D3-brane playing the role of the boundary to this space.
't Hooft G +44 more
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