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Thermal degradation of chalcogenides containing poly(methacrylates)
(1990)
Thermogravimetric analysis of aromatic poly(methacrylates) containing heterocyclic side chains were carried out. The effect of the substituent introduced into the side chain on the thermal stability of the polymer was ...
Physical stabilization of a sandy lateritic soil using ceramic wastesEstabilização física de solo laterítico arenoso utilizando resíduos cerâmicos
(2020-01-01)
The growth of the cities has brought with environmental, social and economic problems, doing an aware-ness of sustainable development essential for the survival of humanity and for the preservation of the envi-ronment. In ...
Stability of trapped Bose-Einstein condensates
(2001-01-01)
In three-dimensional trapped Bose-Einstein condensate (BEC), described by the time-dependent Gross-Pitaevskii-Ginzburg equation, we study the effect of initial conditions on stability using a Gaussian variational approach ...
Stability and Hopf bifurcation in an hexagonal governor system
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
In this paper we study the Lyapunov stability and the Hopf bifurcation in a system coupling an hexagonal centrifugal governor with a steam engine. Here are given sufficient conditions for the stability of the equilibrium ...
Stability of trapped degenerate dipolar Bose and Fermi gases
(2013-06-14)
Trapped degenerate dipolar Bose and Fermi gases of the cylindrical symmetry with the polarization vector along the symmetry axis are only stable for the strength of dipolar interaction below a critical value. In the case ...
Benefits of Combinations of Vitamin A, C and E Derivatives in the Stability of Cosmetic Formulations
(MDPI AGBASEL, 2012)
Chemically stable ester derivatives of vitamins A, C and E have become a focus of interest for their role in the satisfactory results in skin aging treatments. Accordingly, the aim of this study was to evaluate the physical ...