In an incomplete financial market model, we study a flow in the space of equivalent martingale measures and the corresponding shifting perception of the fundamental value of a given asset. This allows us to capture the birth of a perceived bubble and to describe it as an initial submartingale which then turns into a supermartingale before it falls back to its initial value zero.

Background Hypertrophic pyloric stenosis (HPS) is a common surgical condition in infancy, and typically presents at 2-4 weeks of age. Case Presentation A full term male neonate in Zeinabieh hospital, Shiraz, Iran was presented with oral feeding intolerance from birth, bile-stained...

Pyloric atresia is a congenital anomaly manifested by gastric outlet obstruction. The radiographic signs are characterised by the presence of the gas-bubble sign, the pyloric dimple sign and the absence of the beak sign. The differential diagnosis of these signs is discussed in view of other gastric outlet obstructions. Ultrasonography is of value in demonstrating the absence of the normal echo...

Abstract Numerical simulation of the motion a Taylor gas bubble in heated small-diameter tube is carried out. Two models are used to describe dependence surface tension on temperature. In first model, decreases with temperature, and second, it increases, which corresponds pure water an aqueous surfactant solution. It shown that derivative sign affects thickness liquid film around bubble.

The 'double bubble' sign on antenatal ultrasound is often associated with duodenal atresia although there are numerous causes. We present a case of cystic biliary atresia presenting with a "double bubble" at 36-weeks gestation. Postnatal ultrasound and MRCP confirmed a cystic lesion at the porta hepatis, mandating early laparotomy and a successful Kasai portoenterostomy. Although diagnosis of s...

In this paper we explain why bubble chains are stable in champagne, but unstable other carbonated beverages. The hydrodynamic interactions among bubbles a chain determine its stability. wake behind each affects the subsequent ones, producing lift force. For clean and small bubble, force is destabilizing; when surfactants present or size exceeds certain value, additional vorticity production on ...