Close Approach of a Spherical Particle and a Quantised Vortex in Helium II

To interpret the results of recent experiments which used the Particle Image Velocimetry (PIV) method it is necessary to understand the interaction of the particles with the quantised vortices. We present numerical calculations of the close approach of a small spherical particle to a vortex line. The collision time scale compares well with approximate analytical results.     

The effect of the initial (controlled) tonus of the arterial vessels on the correlation of arterial pressure and cardiac output during a pressor reaction to a rapid blood volume increase in rats]

A considerable decrease in pressor responses to polyglykine at an elevated arterial tone and constant increase of cardiac output occurred in anesthetised rats. Vascular and cardiac mechanisms of the interrelationship are discussed.     

Mathematical description of the process of mineral-fiber formation by the plasma method

The problem of microfiber formation from a melt jet of mineral raw material in exposure to a flow of electric-arc plasma is formulated. Its solutions are given for some simple cases. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 71, No. 6, pp. 1059–1063, November–December, 1998.     

New possibilities for x-ray diagnosis of atherosclerosis using a phase contrast method

The internal structure of materials with a low scattering power and small density gradient was investigated using a new method of phase contrast x-ray introscopy. Model calculations were made of the contrast image using dynamic x-ray diffraction theory. The object of the investigation was a capillary containing a blood clot, which modeled a blood vessel with a thrombus. As a result, it was shown that the new method has distinct advantages over the conventionally used absorption method in obtaining completely satisfactory images. Pis’ma Zh. Tekh. Fiz. 24, 55–60 (November 12, 1998)     

Heat transfer in the electrical neutral channel of an arc gas heater

Results are given from experiments on heat transfer in the motion of a high-enthalpy gas through a tube; the results are presented in the form of a general relationship St=f(Re, H /H₀,l/d).Translated from Inzhenerno-Fizicheskii Zhurnal. Vol. 19, No. 5, pp. 846–849, November, 1970.     

Investigation of the coolant edge wetting angle for mesh heat pipe wicks

Results are presented of an experimental investigation of the edge wetting angle of Freon-22, ethane, and ammonia for mesh wicks in the 20–115, 6–115, and 20–60°C temperature ranges, respectively.Deceased.Fiftieth Anniversary of the Great October Socialist Revolution Kiev Polytechnic Institute.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 36, No. 4, pp. 620–626, April, 1979.