In this paper, the pull-in instability of piezoelectric polymeric nanocomposite plates reinforced by functionally graded single-walled carbon nanotubes (FG-SWCNTs) based on modified strain gradient theory (MSGT) is investigated. Various types of SWCNTs are distributed in piezoelectric polymeric plate and also surface stress effect is considered in this research. The piezoelectric polymeric nano...

An adder is a digital circuit that performs addition of numbers and it plays an important role in today’s digital world. In processors and other kinds of computing devices, Adders are used in the arithmetic logic units. They are also utilized in other parts of the processors for calculating addresses, table indices, increment and decrement operations and other similar operations because it is t...

introduction: gastric drainage disorder is one of the complications of gastric pull-up and esophagectomy after surgery which might lead to esophageal cancer and benign strictures. the aim of this study was to determine the role of pyloromyotomy on gastric drainage. materials and methods: in this prospective randomized controlled clinical trial study, we studied 51 patients in two matched groups...

introduction: to evaluate the effects of using sodium hypochlorite irrigant on pull-out bond strength of self-etch and self-adhesive resin cements to dentin. methods: sixty intact premolars were decoronated and the root canals were prepared by step-back technique. the teeth were divided into two groups according to the irrigant used during root canal treatment: 5.25% sodium hypochlorite and nor...

The dynamic behaviors of permanent magnetic synchronous motors considering unbalanced pull have been extensively investigated. However, the harmonics and cogging effects are ignored stator rotor assumed to be smooth cylinders. In this research, an analytical expression is obtained. Based on model, motion equations system established. natural frequency frequency-response analyzed by average meth...

Radiofrequency (RF) power amplifiers (PAs) are important elements of modern communication systems. The most components in PAs the transistors, which operated under large-signal regimes such applications. Designing and optimizing challenging tasks that demand highest accuracy on measurements at both device circuit levels. Large-signal transistor characterization demands development utilization h...

In this paper, the effect of the crack on dynamic behavior of cracked micro-beam in the presence of DC and AC loads are investigated. By applying the residual axial stress and fringing field stress, a nonlinear analytical model of cracked micro-beam is presented and crack is modeled by a massless rotational spring. The governing equation of the system is solved using Galerkin procedure and shoo...