The presence of coal in complex structures featuring sandstone reservoirs seriously hinders reservoir characterization and the identification fluids subsurface formations. Coal can strongly obscure reflections from sandstone, easily leading to false bright spots during exploration; thus, their boundaries cannot be accurately described. Furthermore, layers intercalated with thin seams form compo...

A microporous bisphenol A diglycidyl ether (DGEBA) epoxified-polyethersulfone (PES) blend membrane (EPES membrane) was prepared through dry-wet phase inversion. This study attempts to correlate the changes in membrane physical and chemical properties when the EPES membranes were exposed to different durations of dry-phase inversion, towards the separation efficiency of carcinogen chromium (VI)....

In this article, we will show the complex inversion formula for the inversion of the L2-transform and also some applications of the L2, and Post Widder transforms for solving singular integral equation with trigonometric kernel. Finally, we obtained analytic solution for a partial differential equation with non-constant coefficients.

The federation of heterogeneous large astronomical databases foreseen in the framework of the AVO and NVO projects will pose unprecedented data mining and visualization problems which may find a rather natural and user friendly answer in artificial intelligence (A.I.) tools based on neural networks, fuzzy-C sets or genetic algorithms. We shortly describe some tools implemented by the AstroNeura...

A problem of choosing an appropriate set of parameters for estimates calculating algorithms height optimization is considered. The task arises for example in AVO-polynomial recognition method that depends on height optimization of individual ECA items. Initially some subset of general ECA family was used for such an optimization according to the simplicity of the resulting algorithms. In the pr...

O BSERVATIONS OF enhancement in burning rates of fabrics and the unquenchabil i ty of fires in capsular environments of 100~ oxygen 1,2 prompted the present investigation. At the t ime of these observations this oxygen concentration at a pressure of 4.6 psia (equivalent to 29,000 feet) was the cabin atmosphere generally f avo red / Therefore, the initial experiments were undertaken to determine...

Experience with ASTROVIRTEL, scientific analysis of current large data sets, and detailed preparation for the truly huge future missions especially GAIA, provide important lessons for the Astrophysical Virtual Observatory. They demonstrate that the science cases are impressive, specifically allowing new thresholds to be crossed. The AVO is more than just faster cheaper better, it allows the new...