Esophageal perforation continues to be a difficult diagnostic and management problem. Recommendations regarding treatment remain controversial. 17 patients with perforation of the esophagus were retrospectively reviewed at the Thoracic Surgery Unit of Imam Khomeini Hospital between 1981 and 1992. The majority of the injuries involved the thoracic esophagus (10 or 59%), followed by the cerv...

Mansuri oil field, which is located at the South-West of Iran, has sand production problem and primary analyses proved the existence of this phenomenon in this field. Generally, there are three methods to evaluate the sand production state which are empirical, numerical, mathematical, and physical. Considering the numerical capability to analyze complex geometries under high stresses condition,...

Introduction: The eradication of the middle ear disease is mentioned as the fundamental principle of tympanoplasty. The presence of some factors related to patient or disease itself forces the physician to classify the chronic ear disease as high-risk perforations. The aim of this study was to present a tri-layer tympanoplasty technique and its otological and audiological outcomes in the ...

In this issue, Gunnar Loske et al from Hambourg (Germany) reported their experience in 10 patients with esophageal perforations endoscopically managed by Endovacuum Therapy (EVT) [1]. They achieved complete healing in all patients. Esophageal perforations are one of the worst iatrogenic perforations that can occur, [2] and really frightening to endoscopists (and cardiologists). Esophageal perfo...

This paper presents the results of research on influence perforation and slits water vapour diffusion expanded polystyrene (EPS) size number perforations thermal conductivity EPS board. The was conducted using numerical models (control volume methods) with varying sample thickness, slit spacing, depth diameter perforations. model showed that it is possible to obtain up 42.18 % better compared b...

INTRODUCTION In the last decade, there has been an increasing use of biomaterial patches in the regeneration of traumatic tympanic membrane perforations. The major advantages of biomaterial patches are to provisionally restore the physiological function of the middle ear, thereby immediately improving ear symptoms, and act as a scaffold for epithelium migration. However, whether there are addit...