In our manuscript, we carry out the Mueller matrix polarimetry for characterization of wood and polytetrafluoroethylene (PTFE) or Teflon flat samples. Polarization measurements allows to enhance imaging contrast anisotropic (Horizontal (H) Vertical (V)) superficial fibers tissues isotropic material (Teflon). We study polarization-sensitive parameters better investigations micro- macro- structur...

INTRODUCTION Different types of prosthesis are available for stapes replacement. Because there has been no published report on the efficacy of the titanium soft-clip vs the fluoroplastic Causse loop Teflon piston, we compared short-term hearing results of both types of prosthesis in patients who underwent stapedotomy due to otosclerosis. MATERIALS AND METHODS A total of 57 ears were included ...

INTRODUCTION Mitral valve repair is the treatment of choice to correct mitral insufficiency. Although the literature related to left atrial and ventricular behavior after mitral repair without use of prosthetic rings is scarce. OBJECTIVE To analyze cardiac morphology and function using real time tridimensional echocardiography in individuals submitted to mitral valve repair with Double Teflon...

Low silica type X (LSX) Zeolite is one of useful material in many manufacturing due to the advantage properties including high surface area, stability, microporous crystalline aluminosilicates and positive ion in an extra–framework. The LSX was used rice husk silica source which obtained by leaching with hydrochloric acid and calcination at 500 C. To improve the synthesis method, the LSX was cr...

Background & objectives: The aim of this study was to compare the effectiveness of two stapes prostheses in hearing improvement of patients undergoing stapes surgery for otosclerosis. Materials & Methods: In this retrospective and descriptive study, the charts of 291 stapedectomies performed by one surgeon (first author) from 1997 to 2011 in Imam Khomeini and Apadana hospitals of Ahvaz were rev...

A fractured coronal tooth structure beneath an intact crown is a common clinical occurrence. If the underlying root is healthy, the tooth is restored with a post and core followed by refabrication of the crown. This paper describes a technique of using the existing intact crown for the above-mentioned situation. A 34-year-old female was referred with a fractured right canine with an intact crow...

Endoscopic operation of vesicoureteral reflux (VUR) has several advantages such as less invasiveness and technical ease with the procedure and shorter hospitalization for the operation in comparison with coeliotomy, but the cure rate achieved by endoscopic operation compares unfavorably with that by coeliotomy. The unsuccessful cases of VUR by endoscopic operation were investigated to promote t...

SEVERE hemolytic anemia after surgical correction of congenital endocardial cushion defects is a rare clinical entity, first described by Sayed et al. in 1961.1 Since then five more cases have been reported.2 4 All of these patients had an endocardial cushion defect with a cleft in the mitral valve. All defects were repaired with a Teflon patch, and the patients developed hemolytic anemia in th...

Science and industry have sought to develop systems aiming avoid total failures in power transformers since these machines can be working under overloads, moisture, mechanical thermal stresses, among others. These non-conformities promote the degradation of insulation system lead transformer failure. In incipient stages faults, it is common detect Full Discharges (FDs), which are short circuits...

The paper reports the estimation of volumetric heat generation (qv) from a Teflon cylinder. An aluminum heater, which acts as a heat source, is placed at the center of the Teflon cylinder. The problem under consideration is modeled as a three dimensional steady state conjugate heat transfer from the Teflon cylinder. The model is created and simulations are performed using ANSYS FLUENT to obtain...