In this paper, the concept of a granulation order is proposed in an information system. The positive approximation of a set under a granulation order is defined. Some properties of positive approximation are obtained. For a set of the universe in an information system, its approximation accuracy is monotonously increasing under a granulation order. This means that a proper family of granulation...

A woman aged 73 presented with a four-week history of hypoacusis and low-density clear discharge from her right ear, with no history of traumatic or surgical events. Physical examination showed right middle ear invasion and discharge of a clear liquid, which was suggestive of CSF caused by tympani defects. Left middle ear invasion presented with no other condition. Computerised tomography (CT) ...

BACKGROUND For more than 25 years, posterior laser transverse cordotomy has been generally considered the ideal endoscopic minimally invasive procedure of choice for bilateral vocal fold immobility. The main drawback of this procedure, when compared to more aggressive "glottic aperture improvement" operations, is the high revision rates, caused by granulations, adhesion, and scar, for example. ...

operating on cases of impermeable stricture. The difficulty in the operation is nearly always the finding of the stricture, and the passing of a probe through it after the urethra has been opened on a staff anterior to the stricture. This is often a very difficult and lengthy business because of the mass of soft granulations at the seat of the stricture, and the ease with which any fine metal p...