[en] Criteria are described which must be considered in the application of solid brushes to current collection in fast-discharge homopolar machines. A typical design is described in which brushes carry a peak current density of 15.5 MA/m² in a 30 ms pulse. Initial experimental results are described for a unit of the brush system design

No abstract available

No abstract available

[en] The device consists of an articulated folding arm whose one part is pivoted on a plate attached to the radiation source column while the other is provided with springs and with a stirrup and a recess between the springs. The extended pin on the tomographic part is slidably fitted in the stirrup with recess. The pin is provided with an adjustable contact linked to the microswitch contact. In tomography, the operator mechanically connects the tomography bar fitted in a sleeve to the source, thus disconecting the articulated folding arm from the extended pin of the tomograph. The disconnected arm will then be folded in the vertical position by the action of gravity. At the same time, the microswitch contact displaying the arm position breaks. The double-sided stirrup design makes it possible to use the device in both right-hand and left-hand operation. (J.B.). 2 figs

[en] We show that the anomalous behaviour of the resistivity of nearly-magnetic transition-metal based alloys and of some actinide alloys and compounds can be understood in the frame of the LSF approximation of the one-band Wolff model. Theoretical results are compared with the experimental data and it is shown that the observed ''universal'' behaviour (different systems exhibiting the same temperature dependence when plotted as a function of the reduced temperature T/Tsub(K)) follows as a consequence of the scattering of the conduction electrons on the fluctuations of the local magnetization

[en] This hook is characterized in that each hollow suspension-rod contains a heating resistor insulated from the ambiant atmosphere and connected to current-supply terminals. This can be applied to the handling of fuel-elements or fuel-assemblies in a nuclear reactor

No abstract available

No abstract available

[en] Purpose: To decrease errors in magnetic field by forming the poloidal coil with a one-turn coil conductor. Constitution: The poloidal coil is formed with a one-turn coil conductor. The one-turn coil conductor is initiated from the input end, circled for one-turn and ended at the output end, along which electric power supply line is provided. The electric power supply line is formed by three plate-like conductors arranged in parallel comprising an input line extending substantially vertical to the axial line of the coil conductor from the input end and two output lines extending in parallel with each other and substantially vertically to the above axial line from the output end. In the coil having the above structure, since the output lines are provided on both sides of the input line and the current through each of the electric power supply lines flows in opposite direction to each other, the structure is similar to that of the coaxial cable, which can decrease the generation of errors in the magnetic field. (Moriyama, K.)

No abstract available