Pneumomediastinum following high pressure air injection to the hand.

Severe pneumomediastinum after high-pressure air-injection injury to the hand: a case of pneumomediastinum with an unusual cause.

Neonatal Pneumomediastinum, Spinnaker-Sail Sign: A Case Report and Review of the Literature

Background: Pneumomediastinum (PM) occurring in approximately 0.1% of neonates is an asymptomatic accumulation of free air in the mediastinum. In this paper, we report on a preterm newborn experiencing a significant spontaneous pneumomediastinum subsequent to an uneventful vaginal delivery in the absence of resuscitation maneuvers. Case presentation:A-2560 g-ma...

Iatrogenic subcutaneous cervicofacial emphysema with pneumomediastinum after class V restoration

Subcutaneous facial emphysema after dental treatment is an uncommon complication caused by the invasion of high-pressure air; in severe cases, it can spread to the neck, mediastinum, and thorax, resulting in cervical emphysema, pneumomediastinum, and pneumothorax. The present case showed subcutaneous cervicofacial emphysema with pneumomediastinum after class V restoration. The patient was fully...

The Effects of Pressure Difference in Nozzle’s two Phase Flow on the Quality of Exhaust Mixture

In the most application of nozzle with gas-liquid two-phase flow, the quality of mixture in exhaust of nozzle is the most important parameter as well as the flow velocity. On the other hand, in some industrial application, such as water injection in forced induction (turbocharged or supercharged) internal combustion engine the spray quality is the main goal of designing. In this case and for im...

Analysis of air injection system for drag reduction in high speed vessels using numerical simulation software ANSYS-Fluid Flow

Many existing phenomena in nature are considered new design ideas in various fields of industry. Bionics is the application of biological methods and systems found in nature to the study and design of engineering systems and modern technology. By performing bionic review, the researchers found the penguins by delivering air locked under their wings and creating air bubbles, the drag significant...