Objective The treatment of laryngotracheal stenosis is a major therapeutic challenge. Various treatments include observation, medical management, and surgical management. The most effective surgical management is resection and reconstruction. To the authors' knowledge, no reports have described the use of xenogenic acellular dermal matrix (ADM) for laryngotracheal stenosis. Methods A 27-year-ol...

OBJECTIVE To study the feasibility of engineering cartilage tissue in a tube lined with epithelium and implanting allogenic chondrocytes in a novel scaffold that is made of chitosan nonwoven cloth coated with poly(DL-lactide-co-glycolide). DESIGN Laboratory research. SUBJECTS Allogenic chondrocytes were obtained from the auricles of 1-month-old New Zealand white rabbits. After the cells wer...

We developed a novel technique enabling determination of the permeability of electrospun yarns composed of hundreds of fibers. Analyzing the wicking kinetics in a yarn-in-a-tube composite conduit, it was found that the kinetic is very specific. The liquid was pulled by the capillary pressure associated with the meniscus in the tube while the main resistance comes from the yarn. Therefore, one c...

In this research, wave propagation analysis in polymeric smart nanocomposite micro-tubes reinforced by single-walled carbon nanotubes (SWCNT) conveying fluid is studied. The surrounded elastic medium is simulated by visco-Pasternak model while the composite micro-tube undergoes electro-magneto-mechanical fields. By means of micromechanics method, the constitutive structural coefficients of nano...

The rising economic and environmental pressures associated with the generation consumption of energy necessitates need for lightweighting railway vehicles. axle is a prime candidate unsprung mass. reduction mass correlates to reduced track damage, total operating costs. This paper presents design lightweight multifunctional hybrid metallic-composite utilising coaxial skins. assembly comprises c...

The application of concrete is severely limited in construction cold areas. However, the local ice has functioned as a potential substitute for long time. In order to make efficient use overcome its weaknesses low strength and poor ductility, an innovative type ice-filled large rupture strain (LRS) fiber-reinforced polymer (FRP) tube column was developed. system consists external LRS FRP tubes ...

The purpose of this study was to evaluate acid etchant penetration on dentin bonding agents and its effect on the composite resin bond strength. Forty primary molars were mounted, then the buccal and lingual surfaces were prepared into dentin. The teeth were divided into four groups of 10, and four dentin bonding agents were placed on the buccal and lingual surfaces of exposed dentin, as recomm...

In this study, metal matrices composite samples has been produced by saturating the Al2014 alloy into the 105μm particle sized SiC powder helping with pressured infiltratiıon technique. The SiC powder has been filled into the tube with 70 mm in height and has been fixed from two ends. The infilitration has been performed in 3 minutes, under N2 argon atmosphere and 700kPa constant pressure and i...

Introduction: This study introduces a novel polyvinyl chloride (PVC)/tungsten composites with characterization of their shielding properties by employing different techniques. Methods: The PVC/tungsten composites were produced by employing various weight fractions of tungsten micro-particles including 0, 20, and 40 % wt via melt blending method. In the next st...