This paper considers the processes of activation in ground subsidence movements in flooding mine workings of mines being liquidated in two districts in Donetsk city on the area of more than 60km^2. A concept is give...This paper considers the processes of activation in ground subsidence movements in flooding mine workings of mines being liquidated in two districts in Donetsk city on the area of more than 60km^2. A concept is given to build up control network of geomechanical monitoring in conditions of existing old mining operations at shallow depths (down to 100m), strong damages of objects of urban building. Given are GPS network structure, layouts for location of basic and local profile lines, special control stations for monitoring ground subsidence movements over the territory of mines being flooded. Results of the series of observations made are discussed and their accuracy is analyzed.展开更多
Hydrogen Civilization (HyCi) doctrine is a novel world outlook, all-embracing vision of the sustainability of the human future: humanity can preclude world climate catastrophe and conserve the biosphere's ability ...Hydrogen Civilization (HyCi) doctrine is a novel world outlook, all-embracing vision of the sustainability of the human future: humanity can preclude world climate catastrophe and conserve the biosphere's ability to maintain the life of humanity by the only way, just by the sustainable movement along the vector "Hydrogen Energy → Hydrogen Economy → Hydrogen Civilization". HyCi doctrine is overcoming boundaries between different sciences, between peoples and nations. Hydrogen civilization is a public ideal ('superattractor') putting in the forefront Shakespeare's Hamlet question on a global scale: "To be or not to be the humankind: that is the question".展开更多
There are reviewed some experimental results on metal-hydrogen and PdH x -hydrogen interaction. There is experimentally shown that penetration of hydrogen in palladium is accompanied with strong and micro structural e...There are reviewed some experimental results on metal-hydrogen and PdH x -hydrogen interaction. There is experimentally shown that penetration of hydrogen in palladium is accompanied with strong and micro structural effects, as well as grain shifts, etc. Moreover, the hydrogen saturation of palladium causes form-changing (bending) of palladium plate. These effects, undoubtedly, must be taken in account in technologies of low-temperature diffusion membrane apparatus exploitation.展开更多
The current work is devoted to the investigation of oxygen impact on the structure and properties of titanium. For this purpose, oxygen was introduced into titanium during chamber electro-slag remelting by three diffe...The current work is devoted to the investigation of oxygen impact on the structure and properties of titanium. For this purpose, oxygen was introduced into titanium during chamber electro-slag remelting by three different methods: alloying by oxygen-rich residues from the Kroll process to final values between 0.053 wt.-% and 0.40 wt.-%, by reaction with the gas phase to 0.27 wt.-% and by introduction of TiO2 nanoparticles to 0.73 wt.-%. The influence of oxygen on microstructure of titanium during crystallization, heat treatment and deformation is determined as well as the effect of oxygen on the hardness and the mechanical properties of the material in different structural states. Furthermore, control methods of the structure formation process by thermal effects are proposed. Results show that the chamber electroslag remelting allows obtaining a homogeneous structure of the ingot in the investigated range of oxygen content in titanium. The hardness does not vary by more than 10 percent in longitudinal or radial direction in any of the remelted ingots.展开更多
文摘This paper considers the processes of activation in ground subsidence movements in flooding mine workings of mines being liquidated in two districts in Donetsk city on the area of more than 60km^2. A concept is given to build up control network of geomechanical monitoring in conditions of existing old mining operations at shallow depths (down to 100m), strong damages of objects of urban building. Given are GPS network structure, layouts for location of basic and local profile lines, special control stations for monitoring ground subsidence movements over the territory of mines being flooded. Results of the series of observations made are discussed and their accuracy is analyzed.
文摘Hydrogen Civilization (HyCi) doctrine is a novel world outlook, all-embracing vision of the sustainability of the human future: humanity can preclude world climate catastrophe and conserve the biosphere's ability to maintain the life of humanity by the only way, just by the sustainable movement along the vector "Hydrogen Energy → Hydrogen Economy → Hydrogen Civilization". HyCi doctrine is overcoming boundaries between different sciences, between peoples and nations. Hydrogen civilization is a public ideal ('superattractor') putting in the forefront Shakespeare's Hamlet question on a global scale: "To be or not to be the humankind: that is the question".
文摘There are reviewed some experimental results on metal-hydrogen and PdH x -hydrogen interaction. There is experimentally shown that penetration of hydrogen in palladium is accompanied with strong and micro structural effects, as well as grain shifts, etc. Moreover, the hydrogen saturation of palladium causes form-changing (bending) of palladium plate. These effects, undoubtedly, must be taken in account in technologies of low-temperature diffusion membrane apparatus exploitation.
文摘The current work is devoted to the investigation of oxygen impact on the structure and properties of titanium. For this purpose, oxygen was introduced into titanium during chamber electro-slag remelting by three different methods: alloying by oxygen-rich residues from the Kroll process to final values between 0.053 wt.-% and 0.40 wt.-%, by reaction with the gas phase to 0.27 wt.-% and by introduction of TiO2 nanoparticles to 0.73 wt.-%. The influence of oxygen on microstructure of titanium during crystallization, heat treatment and deformation is determined as well as the effect of oxygen on the hardness and the mechanical properties of the material in different structural states. Furthermore, control methods of the structure formation process by thermal effects are proposed. Results show that the chamber electroslag remelting allows obtaining a homogeneous structure of the ingot in the investigated range of oxygen content in titanium. The hardness does not vary by more than 10 percent in longitudinal or radial direction in any of the remelted ingots.
