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THE GENERALIZED RIEMANN PROBLEM FOR FIRST ORDER QUASILINEAR HYPERBOLIC SYSTEMS OF CONSERVATION LAWS I
In this paper, we consider a generalized Riemann problem of the first order hyperbolic conservation laws. For the case that excludes the centered wave, we prove that the generalized Riemann problem… Expand
Effects of La/Zn ratios on structural and magnetic properties of Sr1 − xLaxFe12 − yZnyO19 hexagonal ferrites
In this research, the hexagonal ferrite Sr1 − xLaxFe12 − yZnyO19 magnetic powder and magnets were prepared by the solid state reaction method. In order to study the formation of hexaferrite phase,… Expand
Influence of Co content on structural and magnetic properties of Sr0·68La0·32Fe11·7Zn0·30 − xCoxO19 M type hexaferrites
Hexagonal ferrite Sr0·68La0·32Fe11·7Zn0·30 − xCoxO19 (0 ≤ x ≤ 0·30) magnetic powders and magnets have been synthesised by a ceramic process. The phase compositions of the calcined powders were… Expand