Magnetic orientation of garden warblers (Sylvia borin) under 1.4 MHz radiofrequency magnetic field

We report on the experiments on orientation of a migratory songbird, the garden warbler (Sylvia borin), during the autumn migration period on the Courish Spit, Eastern Baltics. Birds in experimental cages, deprived of visual information, showed the seasonally appropriate direction of intended flight with respect to the magnetic meridian. Weak radiofrequency (RF) magnetic field (190 nT at 1.4 MHz) disrupted this orientation ability. These results may be considered as an independent replication of earlier experiments, performed by the group of R. and W. Wiltschko with European robins (Erithacus rubecula). Confirmed outstanding sensitivity of the birds'' magnetic compass to RF fields in the lower megahertz range demands for a revision of one of the mainstream theories of magnetoreception, the radical-pair model of birds'' magnetic compass.     

Modeling heat transfer I a glow discharge in the stationary mode

The temperature field of a stationary glow discharge in a gas-discharge chamber is investigated by using modelling of the heat transfer processes. The solution of the problem was obtained on the basis of an asymptotic expansion of the equations.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 6, pp. 966–970, June, 1989.     

Notch sensitivity of alpha-alloys of titanium

Metal Science and Heat Treatment -     

Production problems of hot dip galvanized metal structures

Metallurgist - The state of the market for hot dip galvanized metal structures, prediction of its development within the Russian Federation, and also the state of the market for hot dip galvanizing...