Presently artificial pneumatic muscles are used in various applications due to their simple construction, lightweight and high force to weight ratio. However, controls of various mechanical systems actuated by pneumatic muscles are facing various problems. The parameters of the muscles are nonlinear and time-varying due to temperature change and the deterioration of the pneumatic muscle materia...

background: difficulty in cervical dilatation is a hard situation during the procedure of diagnostic dilatation and curettage in some cases. this study was performed to evaluate the effect of vaginal misoprostol for cervical priming before diagnostic dilatation and curettage. methods: in this study 56 women were selected as the candidates for dilatation and curettage. the study was double blind...

introduction: our aim was compare of two types of lithotripter include holmium: yag laser and pneumatic one in transurethral ureterolithotripsy (tul) for the management of ureteral calculi ≥1 cm. methods: 112 patients with ureteral calculi more than 1 cm were selected in randomized order for pneumatic or holmium: yag laser transurethral ureterolithotripsy (56 patients in each group). ultrasonog...

A 58-year-old lady presented with persistent dysphasia, more for solids than liquids, associated with vomiting and loss of appetite since 1 month. She gave a history of insertion of Mosseau-barbin (MB) tube for chronic dysphasia 15 years ago. Barium swallow demonstrated an oesophageal stent insitu along with dilatation of the lower end of the oesophagus with stagnation of contrast and “bird-bea...

The dissipated energy from periodic deformation is regarded as the main reason for heat generation and temperature rise inside the tire domain. However, the mechanical behavior of rubber parts is highly temperature dependent. In most performed investigations, the influence of thermal effects on stress/ deformation fields of pneumatic tires is ignored and just temperature distribution is conside...

Background: Abnormal uterine Bleeding (AUB) is one of the most common gynecological disorders. Dilatation and curettage is a diagnostic procedure in the management of AUB. Definite treatments such as hysterectomy may be applied based on the results of dilatation and curettage. This study was conducted to evaluate the sensitivity and specificity of dilatation and curettage. Materials and method...

in this study, an intelligent system for sorting closed shell and open shell pistachio nuts, was designed and developed based on combined acoustic and artificial neural network (ann) techniques. the system included a microphone, pc, material handling equipment and an air reject pneumatic mechanism. the microphone, placed under the steel plate, received sound signals generated by the pistachio n...

background: the treatment of urethral stricture in female patients is through dilatation of the urethra by tubes of increasing diameter. there are two main methods: intermittent dilatation and on demand dilatation. objectives: the main aim of this study was to compare the results of these two methods, and to determine the best one. patients and methods: in this clinical trial study, we reviewed...

percutaneous dilatation tracheostomy (pdt) is one of the most frequent interventions in ventilator dependant icu patients. ciaglia and griggs are two common pdt techniques. few studies are available comparing these two methods, but there is no data available to compare these two techniques in iranian population. the aim of this study was to compare ciaglia and griggs technique in our population...