The use of monoclonal antibodies for detecting the influenza virus

The possibilities of using influenza A (Leningrad) 385/80 (H3N2) virus matrix protein-specific FITC-labeled D8 monoclonal antibodies in immunofluorescence assays were investigated. The virus antigen accumulation was detected in chorioallantoic cells of chick embryos. Exhibiting the type-specific properties, the fluorescent antibodies stain the perinuclear space, cytoplasmic membrane, and granular structures in the cytoplasm of infected cells. The haemagglutination test tires in the corresponding specimens were at least 1:16.     

On estimating the influence of the terms characterizing the change in velocity head in the equations governing the transient nonisothermal motion of gas in pipelines

A system of equations describing the transient, nonisothermal flow of gas in pipelines is considered, and the effect of the terms characterizing the change in the velocity head on the character of the solution is analyzed. A comparison is drawn between the numerical solution of these equations with and without allowing for the changes in the velocity head, and some corresponding estimates of the differences between these are presented.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 19, No. 4, pp. 748–754, October, 1970.     

Heat transfer in a cylindrical underground channel

We treat the problem of the flow of a fluid in a cylindrical underground channel, taking account of the thermal interaction of the stream with the surrounding medium.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 27, No. 5, pp. 887–894, November, 1974.     

Experimental investigations of heat transfer from pipes buried in the ground

This paper gives the results of experimental investigations of heat transfer from underground pipelines in unsteady-state thermal conditions by means of a physical model in which the thermal conductivity of the soil and the diameter and depth of burial of the pipes were varied. The experimental data are compared with known theoretical results and the range of validity of previously proposed design equations are determined.     

Unsteady heat losses of underground pipelines

Analytic expressions are presented for the unsteady temperature distribution of the ground and heat losses of an underground pipeline for an arbitrary variation of the temperature of the medium being transferred and boundary conditions of the third kind at the pipe wall and the surface of the ground.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 33, No. 2, pp. 339–345, August, 1977.     

The problem of the linearization of the equations of the nonstationary nonisothermal flow of a real gas in pipelines

The analysis of numerical solutions is the basis for investigating the effect of various terms in the equations of the nonstationary nonisothermal motion of a real gas on the nature of the solution and its results in order to simplify and linearize the original equations to a form permitting analytical solution.Translated from Inzhenerno-Fizicheskii, Vol. 21, No. 1, pp. 100–108, July, 1971.