AIMS To determine the accuracy of the bedside volume-viscosity swallow test (V-VST) for clinical screening of impaired safety and efficacy of deglutition. METHODS We studied 85 patients with dysphagia and 12 healthy subjects. Series of 5-20 mL nectar (295.02 mPa.s), liquid (21.61 mPa.s) and pudding (3682.21 mPa.s) bolus were administered during the V-VST and videofluoroscopy. Cough, fall in o...

The buoyancy-driven boundary-layer flow from a heated horizontal circular cylinder immersed in a water-based alumina (Al2O3) nanofluid is investigated using variable properties for nanofluid viscosity. Two different viscosity models are utilized to evaluate heat transfer enhancement from a cylinder. Exact analytic solutions of the problem are attained employing a novel...

In order to improve the impermeability of ordinary “cement–water glass” double-liquid grouting material, this study prepares a composite material with sodium bentonite, cement, and water glass as main materials, water-reducing agent, early strength agent activators. study, orthogonal tests were conducted using an L16(45) table test results analyzed regression analysis. Using bentonite instead p...

Concrete compositions demand products in order to meet certain requirements and specific properties. For the production of self-compacting concrete, a amount fine materials and/or chemical should be added mix as viscosity modifying agents that will enable mixture with enough flowability, show stability. This paper presents preliminary results novel agent based on biopolymer (chitosan) found res...

The use of nanoparticles in fuels provides new opportunities for modification fuel properties, which may affect the operational parameters engines, particular efficiency and consumption. paper presents comparison compression ignition engine performance fuelled with neat diesel nano-diesel. Alumina (Al2O3) was used as nanoparticles. Surface-active substances, including Span 80 surfactant, well w...

The effect of hardwood admixture (15-25% birch or aspen) in kraft cooking on the strength properties of the fully bleached pulp was investigated. Results obtained from both laband mill-processed ECF bleached pulps showed that adding 15-25% birch or aspen to the production of fully bleached softwood kraft pulp had a minor effect on the strength properties. No significant effect was observed for ...