among the therapeutic options for achalasia are pneumatic dilatation (pd), an appropriate long-term therapy, and botulinum toxin injection (bt) that is a relatively short-term therapy. this study aimed to compare therapeutic effect of repetitive pneumatic dilation with a combined method (botulinum toxin injection and pneumatic dilation) in a group of achalasia patients who are low responder to ...

This study investigates pneumatic conveying of four different biomass materials, namely cottonseeds, wood pellets, chips, and wheat straw. The performance a previously proposed model for predicting pressure drop is evaluated using materials. Results indicate that the can predict with an error range 30 percent. To minimize number trial tests required, optimization algorithm proposed. findings sh...

Ocean wave is one of the renewable energy resources that these days various devices are used to extract its energy. Oscillating Water Column (OWC) installed on the shore is one of the wave energy absorption systems which has received attention due to its simple structure. Investigation of the pneumatic power is of great importance in such systems as the conversion of wave energy to pneumatic en...