INTRODUCTION Most foreign bodies pass through the gastrointestinal tract uneventfully. The majority of the reported literature describes the management of ingested blunt objects. However, ingestion of sharp objects can still occur with a higher rate of perforation corresponding to treatment dilemmas. CASE PRESENTATION We report the conservative management of an inadvertently ingested sharp fo...

A strong shock wave during a supersonic flight of blunt-nosed projectile increases the drag and aerodynamic heating considerably. spike can be mounted on nose to reduce these effects. Apart from its very existence length, spike's shape may also affect characteristics blunt body. This paper presents results an experiment that analyzed influence forces moments coefficients, location center pressu...

The impact of a rigid body on liquid is an important free boundary problem with applications ranging in scale from asteroid impact to droplet motion. The severe nonlinearities involved mean that even the basic problem in which the liquid is inviscid and incompressible, the flow starts from rest and is therefore irrotational, and the effects of gravity, surface tension and air cushioning are neg...

introduction gastric emphysema or pneumatosis is a rare finding. early endoscopy and urgent laparotomy is advised in post trauma patients. case presentation a 29 year old man presented with blunt abdominal injury following a high-speed motorbike crash he complained of abdominal pain and abdomen was distended. ct abdomen revealed air in the gastric wall with disruption of gastric mucosa. he had ...

introduction: diaphragmatic hernia could be caused by congenital disorders, blunt trauma or penetrating injuries. the diagnosis of traumatic diaphragmatic hernia is normally neglected during the first presentation leading to late complications and considerably increased mortality and morbidity among the patients. materials and methods: in this retrospective, descriptive study, we reviewed the m...

Bridging relations are frequently used to provide engineering aerodynamic predictions in the transitional regime between free-molecular and continuum ows. Such predictions are important for mission studies of high-speed planetary entry vehicles to provide accurate analysis of trajectory dynamics, vehicle stability, and landing footprint. However, empirical parameters in these bridging relations...

Ingestion of foreign bodies is a common problem in the otolaryngology practice. Reports of extraluminal migration of the foreign bodies from the upper aerodigestive tract are rare. Penetration and extraluminal migration of ingested foreign bodies may cause severe vascular and suppurative complications, even death. We report a 4-year-old girl who presented with a mass and partial extrusion of a ...