fluids for various industrial applications because of their excellent thermal performance. this study analytically and experimentally examines the effects of nanoparticle dispersion on the entropy generation of eg–al2o3 nanofluid flows through a helical pipe as a heat exchanger under constant wall heat flux thermal boundary condition in laminar regime. it is found that adding nanoparticles impr...

Abstract Background Cuff leak test (CLT) has been used widely to assess upper airway patency before extubation but with low positive predictive value. Aim To the diagnostic accuracy of column width ratio (ACWR) in predicting postextubation stridor (PES). Patients and methods 50 who intubated >24 hours were observed for reintubation. Laryngeal ultrasound was done measure ACW ETT cuff defl...

New orbit-averaged equations for low collisionality neoclassical fluxes in large aspect ratio stellarators with mirror ratios close to unity are derived. The retain finite orbit width effects by employing the second adiabatic invariant $J$ as a velocity-space coordinate and they have been implemented code KNOSOS (Velasco et al. , J. Comput. Phys. vol. 418, 2020, 109512; Velasco Nucl. Fusion 61,...

To achieve success, skiers attempt to optimise various biomechanical parameters (eg, trajectory, velocity, interaction between the skis and snow, energy) that influence performance, but this increases risk of injury. It is therefore not surprising that injuries are common among alpine skiers. To reduce the injury rate, the International Ski Federation (FIS) regulates ski length and width, sidec...