We present the microfabrication and characterization of a ball valve micropump in glass, which is magnetically actuated using the sinusoidal current of an external electromagnet. We employ the use of a simple powder blasting technology for microstructuring the glass substrates and fusion bonding for assembly of the multi-layered microfluidic chip. The use of a polymer membrane with embedded per...

Intravascular haemolysis after the insertion of intracardiac prosthetic material has been reported by Sayed et al. (1961), Verdon, Forrester, and Crosby (1963), Sigler et al. (1963), Gehrmann and Loogen (1964), Reed and Dunn (1964), Marsh (1964), and Yacoub, Rogers, and Taylor (1965). The haemolysis may be sufficient to produce clinical haemolytic anaemia or may cause a compensated haemolytic s...

Craniocervical bony pneumatization is a rare finding, with limited numbers of cases reported in the literature. It is thought to be linked to Eustachian tube dysfunction and a ball valve mechanism, and has a link with recurrent Valsalva maneuvers. We report a case of pneumatization of the occiput, atlas (C1) and axis (C2) in a patient with extensive ENT (Ear, Nose and Throat) surgical history w...

Impact of Atlantic salmon (Salmo salar) cage culture in Mjoifjordur, Eastern Iceland on the chemistry of the sediment was investigated. Sediment samples were collected using a Shipek grab in December 2003. A core sub-sample was taken from each grab for analyzing total organic matter, total organic carbon, total nitrogen and phosphorus in different depths from three stations at various distances...

Systemic embolization due to left atrial (LA) thrombus in patients with rheumatic mitral stenosis (RMS) and atrial fibrillation (Af) is common. However, a large ball thrombus in the LA in RMS patients is rare. It has potentially catastrophic consequences such as total occlusion of the narrowing mitral valve orifice, often resulting in sudden cardiac death. We herein report a case of 68-year-old...