Abundant steeply-dipping thick coal seams (SDTCS) have been found in Xinjiang, China, and they are mined largely by the horizontal section top-coal caving (HSTCC) method. The hanging wall of the HSTCC face is nearly vertical and does not fracture easily after the underlying coal is extracted. As a result, stress tends to concentrate in the hanging wall of the lower-section working face (LSWF) a...

Noninvasive face mask ventilation has been used successfully in patients with paralytic respiratory failure. This study evaluated whether noninvasive face mask ventilation can be used for patients with acute respiratory failure due to intrinsic lung disease. Six patients with hypercapnia and four with hypoxemic acute respiratory failure met clinical and objective criteria for mechanical ventila...

recent studies show significant reduction of postural stability in transtibial amputees (ttas) especially when a perturbation is applied. however, no record has been seen on the consequences of such perturbation on the stump-socket interface pressure (ssip). our objective was to investigate whether such perturbation impose excessive pressures on the stump. we were also interested on the type of...

UNLABELLED When selecting a respirator, it is important to understand how employees' motor, visual and cognitive abilities are impacted by the personal protective equipment. This study compares dust, powered-air-purifying and full-face, negative-pressure respirators. Thirty participants performed three varied tasks. Each participant performed each task without a respirator and while wearing the...

A reduction in central blood volume can lead to cardiovascular decompensation (i.e., failure to maintain blood pressure). Cooling the forehead and cheeks using ice water raises blood pressure. Therefore, face cooling (FC) could be used to mitigate decreases in blood pressure during central hypovolemia. We tested the hypothesis that FC during central hypovolemia induced by lower-body negative pr...

objective: although smoking increase the risk of cardiovascular diseases, its quitting leads to weight gain due to increased appetite. the aim of this study was to determine the effect of face to face dietary counseling on metabolic syndrome (mets) indices in cigarette quitter. materials and methods: this 9-week parallel randomized clinical trial was conducted by participation of 50 patients wi...

INTRODUCTION Ventilator-associated pneumonia (VAP) is one of the most popular nosocomial infections in the intensive care units and the nurse's role in preventing it is very important. The aim of this study was to compare the effect of two methods of face to face training and work- shop clinical guidelines in prevention of VAP. METHODS In this experimental randomized clinical trial, the knowl...

introduction phenylketonuria (pku) is a congenital metabolic disorder of phenylalanine, if which, the diet is not to be followed exactly, it can lead to progressive mental retardation. the purpose of this study was to investigate the effect of face to face and non-face to face trainings by parental on controlling serum phenylalanine levels in the children with phenylketonuria. materials and met...

Tangential pressure (TP) , as defined in this study, is that pressure parallel to and located at the socket inner face. The talrgential pressure resultant (TP,) will possess a horizontal component (TP,) directed along an axis perpendicular to the main socket axis and a vertical component (TP,) directed along the main socket axis (see Fig. 1). The plane in which all tangential pressures exist is...