To complete groundwater diversion, the complex flow law of in rocks must be investigated so that diversion can improved. This research uses computer finite element method (FEM), CT scanning calculation method, Avizo and digital core technology combined with Fluent (FCM) to reconstruct microscopic pore structures on a computer. The numerical simulation results under different conditions show tha...

The hyper-arid core of the Atacama Desert (Chile) is the driest place on Earth and is considered a close analogue to the extremely arid conditions on the surface of Mars. Microbial life is very rare in soils of this hyper-arid region, and autotrophic micro-organisms are virtually absent. Instead, photosynthetic micro-organisms have successfully colonized the interior of halite crusts, which are...

BACKGROUND Micro computed tomography (micro CT) has been shown to provide exceptionally high quality imaging of the fine structural detail within urinary calculi. We tested the idea that micro CT might also be used to identify the mineral composition of urinary stones non-destructively. METHODS Micro CT x-ray attenuation values were measured for mineral that was positively identified by infra...

The ballast of the railway track is constantly changing due to dynamic forces of train traffic that results in the crushing of the rocks. The feasibility to simulate each particle makes the discrete element method (DEM) suitable for the task. Different DEM particle models are introduced in our paper and the adequate one was chosen. This new method is based on crushable convex polyhedral element...

Abstract Microdevice integrating energy storage with wireless charging could create opportunities for electronics design, such as moveable charging. Herein, we report seamlessly integrated micro-supercapacitors by taking advantage of a designed highly consistent material system that both coils and electrodes are the graphite paper. The transferring power efficiency is 52.8%. Benefitting from un...