Phase composition and crack resistance of alloy boride layers on steel

Conclusions  

Ultra-low magnetic resonance tomography of thoracic and lumbar spine osteochondrosis

The paper presents the results of tomographic studies of 119 patients with clinical manifestations of radiculopathy or radiculomyelopathy. MR tomography was performed on the Magnaview unit ("Instrumentarium", Finland) at field intensity 0.04 T. The analysis of T1- and T2-weighted sagittal tomograms providing MRT picture of osteochondrosis and various hernias shows that osteochondrosis involves several disks simultaneously while their bulging towards the vertebral canal is multiple. The severity of the hernia in some cases does not closely agree with degeneration degree or the decline of the vertebral disk height. However there is a close correlation between the size and direction of the hernia on the one hand and the clinical manifestations on the other hand.     

60 J quasistationary electroionization laser on Xe atomic metastables

A high-pressure (p = 3.5atm) electroionization laser operating on the5d-6pxenon atomic transitions is investigated for a pumping pulse duration range up to 30 μs. An output energy of more than 60 J has been achieved with an Ar-Xe mixture and an active volume of 10 1. The angular divergence of the radiation was about5 times 10^{-5}rad. The advantages of such laser systems for industrial use is discussed.     

Intensification of evaporation of uranium hexafluoride

The theoretical mechanism of the sublimation of uranium hexafluoride are considered. The most contribution to the rate of evaporation of UF₆ is introduced by the conductive mode of heat exchange. Various modes of the intensification of the evaporation of uranium hexafluoride during the nitrogen supply in pulse mode to the product mass are investigated. The nitrogen supply results in the turbulization of gas flow within a vessel (Re = 2500–4000) and significantly increases the rate of evaporation of uranium hexafluoride with the substantial decrease in a weight of the nonevaporable residue of 5.6–1.0 kg. The complex application of the pulse nitrogen supply in combination with heating the bottom of the vessel is the most effective method for evaporating uranium hexafluoride. The rate of evaporation of UF6 increases by a factor of almost four in comparison with the design mode. The developed methods are applied in industry and provide the stable operation of Saturn reactors during the conversion of uranium hexafluoride into its dioxide.