3D visualisations of the microstructure of flocculated particulates and sediments using optical confocal laser mi- croscopy and high resolution X-ray microtomography (XMT) methods are described. Data obtained from in-...3D visualisations of the microstructure of flocculated particulates and sediments using optical confocal laser mi- croscopy and high resolution X-ray microtomography (XMT) methods are described. Data obtained from in-situ measurements should enable direct computation of the properties of solids assembly (shape, size, contact area) and their permeability to fluids. A specific application relating to the formation of silica aggregates is described from which the behaviour of sediments containing these materials can be predicted on the basis of a bench-top test and the use of a Lattice Boltzman simulation. It is proposed that the method can potentially be used to predict trends such as the filtration behaviour of porous structures under different states of compression. This offers a significant benefit in assisting the formulation design of flocculated materials pertinent to a number of industrial sectors wishing to design optimal filtration or relevant operations.展开更多
There are so many multimedia resources now. But it is difficult to look for any video thing amongthem. MPEG-4 is a major technique used for video coding. In the paper,some methods based on MPEG-4 coding stan-dard for ...There are so many multimedia resources now. But it is difficult to look for any video thing amongthem. MPEG-4 is a major technique used for video coding. In the paper,some methods based on MPEG-4 coding stan-dard for video retrival are introduced. The focus is on converting video data to textual data,then video retrival is con-verted to textual retrival. XML technique is involved naturally.展开更多
Electrical tomography is, in certain cases, the most attractive method for real imaging of industrial processes, because of its inherent simplicity, rugged construction of the tomographer and high-speed capability. Th...Electrical tomography is, in certain cases, the most attractive method for real imaging of industrial processes, because of its inherent simplicity, rugged construction of the tomographer and high-speed capability. This paper presents examples illus- trating applications of electrical tomography for imaging fluidized beds, bubble columns and pneumatic conveyors. Electrical tomography opens up new ways for processing, imaging and modelling multi-phase flows as shown by 2D and 3D images illus- trating the various types of flow morphology.展开更多
文摘3D visualisations of the microstructure of flocculated particulates and sediments using optical confocal laser mi- croscopy and high resolution X-ray microtomography (XMT) methods are described. Data obtained from in-situ measurements should enable direct computation of the properties of solids assembly (shape, size, contact area) and their permeability to fluids. A specific application relating to the formation of silica aggregates is described from which the behaviour of sediments containing these materials can be predicted on the basis of a bench-top test and the use of a Lattice Boltzman simulation. It is proposed that the method can potentially be used to predict trends such as the filtration behaviour of porous structures under different states of compression. This offers a significant benefit in assisting the formulation design of flocculated materials pertinent to a number of industrial sectors wishing to design optimal filtration or relevant operations.
文摘There are so many multimedia resources now. But it is difficult to look for any video thing amongthem. MPEG-4 is a major technique used for video coding. In the paper,some methods based on MPEG-4 coding stan-dard for video retrival are introduced. The focus is on converting video data to textual data,then video retrival is con-verted to textual retrival. XML technique is involved naturally.
文摘Electrical tomography is, in certain cases, the most attractive method for real imaging of industrial processes, because of its inherent simplicity, rugged construction of the tomographer and high-speed capability. This paper presents examples illus- trating applications of electrical tomography for imaging fluidized beds, bubble columns and pneumatic conveyors. Electrical tomography opens up new ways for processing, imaging and modelling multi-phase flows as shown by 2D and 3D images illus- trating the various types of flow morphology.
