SOME PROBLEMS OF TYMPANOPLASTY

[The common problems in sinuectomy and tympanoplasty].

The common problems encountered in the surgery for chronic otitis media and chronic paranasal sinusitis were discussed in this articles. "Preservation of the mucous membrane" , "Communication of these cavities with the proper nasal cavity or with the external auditory meatus", and " Obstruction of these cavities" As the result the author has been lead to conclude that it is unnecessary to remov...

Comparison of Endoscopic Tympanoplasty to Microscopic Tympanoplasty

OBJECTIVES This study aimed to compare the outcome of endoscopic and microscopic tympanoplasty. METHODS This was a retrospective comparative study of 73 patients (35 males and 38 females) who underwent type I tympanoplasty at Samsung Medical Center from April to December 2014. The subjects were classified into two groups; endoscopic tympanoplasty (ET, n=25), microscopic tympanoplasty (MT, n=4...

Some Perspectives of Machine Repair Problems

In this article, we survey machine repair problems (MRP) with an emphasis on historical developments of queuing models of practical importance. The survey proceeds historically, starting with developments in 1985, when the first published review on machine interference models appeared. We attempt to elaborate some basic MRP models of the real life congestion situations. The brief survey of some...

some properties of fuzzy hilbert spaces and norm of operators

in this thesis, at first we investigate the bounded inverse theorem on fuzzy normed linear spaces and study the set of all compact operators on these spaces. then we introduce the notions of fuzzy boundedness and investigate a new norm operators and the relationship between continuity and boundedness. and, we show that the space of all fuzzy bounded operators is complete. finally, we define...

Retrospective analysis of tympanoplasty