OBJECTIVES Chronic rhinosinusitis (CRS) is a common chronic disease of the upper airways and has considerable impact on quality of life. Topical delivery of drugs to the paranasal sinuses is challenging, therefore the rate of surgery is high. This study investigates the delivery efficiency of a pulsating aerosol in comparison to a nasal pump spray to the sinuses and the nose in healthy voluntee...

several approaches are available to reduce pulsating torque components in permanent magnet motors. one of the known techniques is stator tooth shape modifications. this paper presents an integrated algorithm applicable for tooth shape optimization of permanent magnet motors. this method focuses on the reduced basis technique, finite element analysis and taguchi method and is conducted on tooth ...

We review the basic concepts, present state of theoretical models, and the future prospects for theory and observations of pulsating stellar atmospheres. Our emphasis is on radially pulsating cool stars, which dynamic atmospheres provide a general example for the differences with standard static model atmospheres.

Asteroseismology of pulsating pre-main sequence (PMS) stars has the potential of testing the validity of current models of PMS structure and evolution. As a first step, a sufficiently large sample of pulsating PMS stars has to be established, which allows to select candidates optimally suited for a detailed asteroseismological analysis based on photometry from space or ground based network data.

Current models and observations of variability in HgMn stars disagree. We present here the models that argue for pulsating HgMn stars with properties similar to those of Slowly Pulsating B Stars. The lack of observed variable HgMn stars suggests that some physical process is missing from the models. Some possibilities are discussed.

A two-dimensional pulsating flow of a viscous fluid in plane channel whose wall has rectangular microcavities partially or completely filled with compressible gas is investigated. This problem formulation can clarify the friction reduction mechanism laminar sublayer turbulent boundary layer over textured stripped superhydrophobic surface containing periodically arranged micro-cavities gas. It a...

The structure and inclination angle of a pulsating heat pipe are critical factors influencing the transfer performance operation mode. In this work, single-layer double-row is designed, start-up characteristics at limit angles (0?, 90?, 180?) experimentally investigated. Also, mode studied through infrared imager temperature profiles. study highlighted that has excellent in angle. When 0?, impr...

The current work deals with the pulsating flow of Au-blood micropolar nanofluid existence thermal radiation and Joule heating. Micropolar fluid is addressed as blood (base fluid) Au (gold) a nanoparticle. has been mathematically modeled, resulting in delicate system partial differential equations (PDEs). A perturbation technique used to convert PDE into ordinary (ODEs), which are subsequently s...