Nowadays, due to the increasing power of diesel engines, especially heavy duty diesel engines, and increasing gas pressure inside the combustion chamber, the forces acting on the engine bearings have dramatically raised. On the other hand, becaus eof the competition in the market, it is necessary to increase the engine bearing life and reduce its failure as much as possible. The engine bearings...

The technique of ex vivo 31P NMR spectroscopy has been used for the investigation of metabolic turnover in 15 cadaveric human kidneys obtained from brain-dead donors for transplantation. Measurements were carried out at 1.5 T time-dependently during regular hypothermic storage in histidine-tryptophan-alpha-ketoglutarate solution. The minimum delay between explanation and spectroscopy was 2 h 41...

We derive here a variant of the 2D Green-Naghdi equations that model the propagation of two-directional, nonlinear dispersive waves in shallow water. This new model has the same accuracy as the standard 2D GreenNaghdi equations. Its mathematical interest is that it allows a control of the rotational part of the (vertically averaged) horizontal velocity, which is not the case for the usual Green...

Until recently proximal vergence was considered to play only a minor role in the eye alignment changes that occur when looking between distant and near targets. We measured the magnitude and velocity of proximal vergence using infrared limbal sensing to record vergence responses between two untextured luminous horizontal rods which lacked disparity and accommodative cues. The magnitude of proxi...

TWODEE-2 is a FORTRAN 90 code based on previous code (TWODEE). It is designed to solve the shallow water equations for fluid depth, depth-averaged horizontal velocities and depth-averaged fluid density. The shallow layer approach used by TWODEE-2 is a compromise between the complexity of CFD models and the simpler integral models. It can be used for forecasting gas dispersion near the ground an...

Acoustic energy density has been shown to exhibit lower spatial variance in reactive sound fields compared to the acoustic potential energy estimate offered by microphones, making it a very useful measure of the acoustic energy within an enclosure. Previously, frequency-domain time-averaged energy density estimates have come about by estimating the pressure-average and particle velocity between...

Poiseuille flow between parallel plates alters the shapes and velocities of chemical reaction fronts. In the narrow-gap limit, the cubic reaction-diffusion-advection equation predicts a front-velocity correction equal to the gap-averaged fluid velocity epsilon. In the singular wide-gap limit, the correction equals the midgap fluid velocity 3epsilon/2 when the flow is in the direction of propaga...

The planewave response of bianisotropic materials generally cannot be characterized by a single scalar index, as directionality of energy flow and multiple wavevectors need to be considered. This is especially significant for bianisotropic metamaterials which support negative refraction, negative phase velocity, and counterposition. By means of a numerical example based on a commonly–studied bi...

We investigate whether articulatory movement trajectories follow the nonlinear invariant relationship between the tangential velocity and the curvature, i.e. the one-third power law. The power law holds for articulatory trajectories of phonetic rendering, although the exponent is in the range 0.35–0.42 when averaged across speakers and emotions but is relatively invariant under speaker/emotion ...