This paper is concerned with theoretical analysis of a heat and moisture transfer model arising from textile industries, which is described by a degenerate and strongly coupled parabolic system. We prove the global (in time) existence of weak solution by constructing an approximate solution with some standard smoothing. The proof is based on the physcial nature of gas convection, in which the h...

Disposable materials enjoy annually steady growth in volume in the field of medical applications as surgical gowns, isolation gowns, and medical drapes which impede cross contamination from reusable protective apparel in a hospital. There are four levels of liquid barrier performance according to the American National Standard/Association for the Advancement of Medical Instrumentation (ANSI/AAM...

Due to the strong development of nanotechnologies, ultrafine particles could represent a growing hazard for workers health. When it is not possible to reduce the risk at its source, filtration systems are one of the means used to limit the exposure to hazardous substances such as airborne particles. The aim of this study is to measure the penetration of nanoparticles on a very large diameter ra...

The transverse permeability for creeping flow through unidirectional random arrays of fibers/cylinders has been studied numerically using the finite element method (FEM). A modified Carman-Kozeny (CK) relation is presented which takes into account the tortuosity (flow path) and the lubrication effect of the narrow channels. The proposed relation is valid in a wide range of porosities compared t...

Many materials undergo reconfiguration of microscopic structure in response to applied stress. Computing the mechanical behavior of such materials at the continuum level requires a locally valid stress-strain relation. Due to the dynamic microstructure reconfiguration, such relations are difficult to obtain analytically. Numerical simulation of the microscopic dynamics is an alternative, albeit...

BACKGROUND Experimental studies suggest that arterial injury and inflammation lead to increased neointimal growth after stenting. Despite the increased use of coronary stents in humans, there are only limited pathological data on the morphological features of in-stent restenosis. METHODS AND RESULTS Detailed histology was performed on 116 stents, implanted > or =90 days in 87 coronary arterie...

  Background and Objective: Different mechanisms may lead to the development of soft tissue tumor-like lesions in the oral cavity. Many of these lesions can be identified as specific entities on the basis of their histopathological features and are divided into fibrous, vascular, and giant cell types. The purpose of this study was to establish the relative prevalence of the different histopath...

BACKGROUND AND PURPOSE Previous studies demonstrated that carotid plaques analyzed by CTA can show contrast plaque enhancement. The purpose of this preliminary work was to evaluate the possible association between the fissured fibrous cap and contrast plaque enhancement. MATERIALS AND METHODS Forty-seven consecutive (men = 25; average age = 66.8 ± 9 years) symptomatic patients studied by use ...

Figure Legend: Figure 1 Bone Fibrous osteodystrophy in a male F344/N rat from a chronic study. There is replacement of bone by fibrous connective tissue. Figure 2 Bone Fibrous osteodystrophy in a male F344/N rat from a chronic study (same animal as in Figure 1). There is replacement of cortical bone by fibrous connective tissue. Figure 3 Bone Fibrous osteodystrophy in a male F344/N rat from a c...