It is known that any scattered wave field carrying energy into infinity must have source singularity centers within a bounded space. Otherwise, the scattered field should be identically equal to zero everywhere [1]. In this paper, attention is paid to localization of these singularities under the assumption that every scattered wave is determined uniquely by its own singularities. Investigations have shown that these singularities are distributed as "bright centers" and the distance between them depends on frequency. To determine the position (localization) of the scattered wave field singularities, the functions describing converging and diverging waves are used. Based on these concepts and the method of auxiliary sources, an efficient numerical method to reconstruct a field up to its singularities is suggested. The localization of singularities is used for partial representation of the scattered fields, which reduces significantly the number of unknowns in describing the scattering process and leading into optimized inverse scattering problem solutions.

627be used by itself to predict storage stability. It is the detailed structure of the individual nitrogen compounds and the interactions they undergo with other reactive species which influences the overall sediment forming process. AcknowledgmentAnalytical work was carried out by W. K. Robbins. L i t e r a t u r e Cited Brinkman, D. W.; Whisman, M. L.; Bowden, J. N. "Stability Characteristics of Hydrocarbon Fuels from Alternate Sources"; Bartlesvilie Energy Technology CenterHigh-temperature (172-277 "C) wet oxidation of woods leads to the production of a mixture of organic acids. The organic compounds produced Include formic acid, acetic acid, methanol, and a mixture of hydroxylated organic acids. In this study, the effects of oxygen pressure, temperature, the type of wood, and the addition of ferric sulfate on the yield of the organic acids were determined.

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