Static worlds in a friedman space

New solutions are found for the Einstein gravitational equations for the static Friedman metric.Translated from Izvestiya VUZ. Fizika, No. 3, pp. 82–85, March, 1970.In conclusion the authors thank A. L. Zel'manov and V. D. Zakharov for interest in this study.     

Investigations of the apparent temperature of snow cover in the submillimeter wavelength region

Equipment and methods used for measuring the apparent temperature of snow cover in high mountains is described. The spectrum of dry snowpack emission in the wavelength region 0.85÷1.3 mm is obtained. The dependence of the apparent temperature of snow cover on the atmospheric optical depth is determined. It is shown that in the first approximation the snow cover emission is described by the Lambert law and the snow albedo is within 0.6÷0.67.     

Interamination of some aminooxypyrimidines

Bis(pyrimidinyl)amines have been prepared by reaction of aminooxypyrimidines with aminooxypyrimidine hydrochlorides.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan' Scientific Center, Russian Academy of Sciences, 420083 Kazan'. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 169–173, January, 1992.