this paper addresses the problem of the fractional sliding mode control (fsmc) for a mems optical switch. the proposed scheme utilizes a fractional sliding surface to describe dynamic behavior of the system in the sliding mode stage. after a comparison with the classical integer-order counterpart, it is seen that the control system with the proposed sliding surface displays better transient per...

in order to simultaneously improve wet and dry strengths of paper and decrease environmental issues related to the wet strength resins, in this study effect of application method of wet strength additives on paper properties was investigated. wet strength resins were applied in four methods including spraying an aqueous glyoxal solution on to the surface of wet paper, addition of aminated polya...

in this paper, the modified euler-bernoulli beam model is presented to examine the influence of surface elasticity and residual surface tension on the critical force of axial buckling of nanotubes in the presence of rotary inertia. an explicit solution is derived for the buckling loads of microscaled euler beams considering surface effects. the size-dependent buckling behavior of the nanotube d...

squamous cell carcinoma (scc) is the most common malignant tumor of the oral cavity and one of the ten most common causes of death. it arises from dysplastic oral squamous epithelium. considering the pathogenesis of scc, a smooth and intact surface in this lesion is not a usual finding. in this paper, we report an extremely rare case of oral scc in buccal mucosa presenting as an exophytic lesio...

a tiling of a surface is a decomposition of the surface into pieces, i.e. tiles, which cover it without gaps or overlaps. in this paper some special polygonal tiling of sphere, ellipsoid, cylinder, and torus as the most abundant shapes of fullerenes are investigated.

Paper-based microfluidics offers a simple, cost-effective, and versatile platform for fluid manipulation analysis. Despite significant advancements in paper fluidics, the flow control channel remains challenging task. In this regard, we have developed delay using rectangular tape patterns on surface. We investigated effect of hydrophobic barriers with varying widths. The designing cutting was p...