The effect of viscoelasticity on sprays produced from agricultural flat fan nozzles is investigated experimentally using dilute aqueous solutions polyethylene oxide (PEO). Measurements the droplet size distribution reveal that polymer addition to water results in formation overall bigger droplets with a broader distribution. median found increase linearly extensional relaxation time liquid and ...

BACKGROUND Accumulated secretions after intubation can affect the resistance of an endotracheal tube (ETT). Our objective was to measure extubated patient tubes and size-matched controls to evaluate differences in resistance. METHODS New ETTs, with internal diameters of 7.0 through 8.5 mm, were tested as controls to establish the resistance of each size group as measured by pressure drop. Mea...