The success of a complete denture depends on the fit of the denture, occlusion, esthetics, and other factors. A poorly fitting denture, irritation and other discomforts currently are treated by dentists with the use of tissue conditioners and soft liners.i-3 It is desirable for tissue conditioners to adapt to the oral mucosa as it heals and also to absorb stresses during mastication. Soft liner...

Setting sail on a new career path as a nurse responsible for the health of the passengers and crew of cruise liners can be hugely satisfying.

BACKGROUND Many patients cannot afford sterile dressings. In St John, New Brunswick, clean dressings have been used instead of sterile dressings for years, with no apparent ill effects. No previous studies have compared the sterility and cost of clean versus sterile dressing materials. OBJECTIVES THE GOALS OF THE PRESENT STUDY WERE TO ANSWER THE FOLLOWING QUESTIONS: how much more sterile are ...

We present pore-resolved direction numerical simulations (DNS) of turbulent flows grazing over perforated plates, that closely resemble the acoustic liners found on aircraft engines. Our DNS explore a large parameter space including effects porosity, thickness, and viscous-scaled diameter at friction Reynolds numbers $Re_\tau = 500$-$2000$, which allows us to develop robust theory for estimatin...

In this paper, a novel model is proposed for the numerical simulation of noise-attenuating perforated liners. Effusion cooling liners offer potential being able to attenuate combustion instabilities in gas turbine engines. However, acoustic attenuation liner combination number interacting factors, resulting traditional approach designing combustor relying heavily on rig tests. On other hand, di...

Introduction Recent studies have shown that sequential irradiation/annealing processes improves the wear performance and oxidation resistance of crosslinked polyethylene, while maintaining mechanical properties [1,2]. Although these early results showed great promise for mechanically enhanced XLPE, we still know little about the variables that can lead to high-wear, particularly surface roughne...

We explore the three-dimensional interaction of higher acoustic modes with bias-flow perforated liners in cylindrical and annular ducts. Pressure fluctuations in the vicinity of the liners excite the production and shedding of vorticity from the rims of apertures in the liners. An effective liner compliance is used which accounts for this transfer of acoustical into vortical energy. The investi...