Identification of the bow stabilization mechanism by numerical simulation of the laminar asymmetric flow of a viscous incompressible fluid past a cylinder with a projecting disk

The mechanism responsible for the bow stabilization that arises as a result of the deformation of the spatial vortex structures that are organized in the flow of a fluid past a cylinder with a projecting thin disk is analyzed by solving the Navier-Stokes equations using a factorized finite-volume method and a simplified approach based on analytical specification of the metric coefficients. Zh. Tekh. Fiz. 68, 138–142 (November 1998)     

Quasicrystals: Structure and properties

The structure and properties of quasicrystals are discussed. The short-and long-range atomic orders and the effect of these factors on the physical characteristics are considered. It is noted that investigations of the physical properties of quasicrystals at temperatures above room temperature should be performed. Promising applications are briefly outlined.     

Triterpene glycosides of Astragalus and their genins XXXIV. Cycloaraloside E from Astragalus amarus

Five compounds of glycosidic nature, designated 5–9 have been isolated from the roots of the plantAstragalus amarus Pall. (Leguminosae). The structure of substance 8, which has been called cycloaraloside E, has been shown on the basis of chemical transformations and spectral characteristics. Cycloaraloside E is 20R, 24S-epoxycycloartane-3β,6α,16β,25-tetraol 3,25-di-0-β-D-glucopyranoside.     

Triterpene glycosides of astragalus and their genins. XXVI. Cycloartanes and sterols of Astragalus schachirudensis

Institute of the Chemistry of Plant Substances, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 136–137, January–February, 1988.