Now showing items 1-10 of 4341
Shortcuts in particle production in a toroidally compactified space-time
We investigate the particle production in a toroidally compactified space-time due to the expansion of a Friedmann cosmological model in ℝ3 × S1 outside a U(1) local cosmic string. The case of a Friedmann space-time is ...
Nova proposta de critério de retenção para dimensionamento de filtros têxteis
The designs of filters made by granular material or textile are mainly based on empirical or semi empirical retention criteria according to Terzaghi proposal, which compares particle diameter of the soil base with the ...
L-shell X-ray production cross sections induced by protons and alpha-particles in the 0.7-2.0 MeV/amu range for Ru and Ag
(Elsevier Science, 2014-01)
The X-ray emissions induced by protons and alpha-particles of the elements Ag and Ru were measured onmono-elemental thin films. L-shell X-ray production cross sections were obtained for the three L-sub-shells, considering ...
Titanium and zirconia particle-induced pro-inflammatory gene expression in cultured macrophages and osteolysis, inflammatory hyperalgesia and edema in vivo
(Pergamon-elsevier Science LtdOxfordInglaterra, 2014)
Different particle size silicas from water glass.
(Soc Brasileira Quimica, 1996-09-01)
Non-crystalline silica was obtained with different particle sizes. Samples were prepared from soluble sodium silicate (water glass) and sulfuric acid solutions. Dialysis was performed for sodium sulfate elimination. Products ...