The stability of surrounding rock is the basic guarantee underground space engineering safety. large deformation a roadway’s very common phenomenon during excavation coal mine roadways or mining, especially in deep soft mining roadways. With increase depth and stress, it important to prevent disasters caused by deformation. This work aims conduct an optimization design roadway support for mines...

An analytical model for the electric characteristics of ultrathin double-gate and surrounding-gate MOSFETs in strong inversion and accumulation is presented. The analytical solutions to the 1-D simplified Poisson’s equation in both Cartesian and cylindrical coordinates with symmetric boundary conditions are examined. The concentration of the induced inversion charge by the same surface potentia...

Full professor of Analytical Chemistry at Piemonte Orientale University, Department of Environmental and Life Sciences. His scientific and research activity concerns on: develop, optimisation and validation of techniques, analytical, medical diagnostic optimisation, proteomics, certification of business and laboratory quality, characterisation of environmental systems, diagnostic of products an...

In this paper, analytical and numerical methods for simulating squeeze-film air damping affecting suspended and perforated movable micro-surfaces are analyzed. Numerical solutions are obtained by full 3-D Navier-Stokes numerical analysis, carried out by a commercial finite element code, COMSOL Multiphysics, and are compared with those obtained using different analytical models proposed in liter...