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[en] Eleven years of arrival time data for PSR 0833-45 collected at Goldstone, CA were analysed by fitting a simple model of the pulse period to the data in a least-squares sense. Four large jumps ΔP in period P of ΔP/P approximately -2 x 10-6 have occurred in which dP/dt increases up to 2% of its pre-jump value. (Auth.)
Source
Sieber, W.; Wielebinski, R. (Max-Planck-Institut fuer Radioastronomie, Bonn (Germany, F.R.)) (eds.); International Astronomical Union Symposium; no. 95; 475 p; ISBN 90-277-1280-8; 
; 1981; p. 277-278; D. Reidel; Dordrecht, Netherlands; 95. International Astronomical Union symposium on pulsars; Bonn, Germany, F.R; 26 - 29 Aug 1980
; 1981; p. 277-278; D. Reidel; Dordrecht, Netherlands; 95. International Astronomical Union symposium on pulsars; Bonn, Germany, F.R; 26 - 29 Aug 1980
[en] We first obtain the master symmetry of the differential–difference KP equation. Then we show how this master symmetry, through sl(2,C)-representation of the equation, can construct generators of time dependent symmetries. (paper)
Journal
Journal of Physics. A, Mathematical and Theoretical (Online); ISSN 1751-8121; ; v. 47(40); [8 p.]
; v. 47(40); [8 p.]
[en] The character of oil price change is discussed. The problem on the world oil demand is considered in detail. It is noted that under conditions of expected increase in oil demand in the faraway future and continuing decrease in oil production in the countries, which are not the OPEC members, the future prices on oil will depend on decisions adopted in the OPEC member-countries
Journal
Neft', Gaz i Neftekhimiya za Rubezhom; ISSN 0202-4578; ; (no.8); p. 7-10
; (no.8); p. 7-10
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