A new model for correlating self-diffusion coefficients is proposed here. It based on the entropy scaling concept and makes it possible to quantitatively estimate in any fluid state (subcritical gas liquid as well supercritical states). general relationship between a dimensionless form of coefficient function Tv-residual proposed. This involves thermodynamic properties that were straightforward...

Experience from the ultrasonic inspection of nuclear power plants has shown that large focused transducers are relatively effective in suppressing material structure noise. Operation of a large focused transducer can be thought of as integration (coherent summation) of individual beams reflected from the flaw and received by individual points at the transducer surface. Synthetic aperture focusi...

The Special Affine Fourier Transform or the SAFT generalizes a number of well known unitary transformations as well as signal processing and optics related mathematical operations. Unlike the Fourier transform, the SAFT does not work well with the standard convolution operation. Recently, Q. Xiang and K. Y. Qin introduced a new convolution operation that is more suitable for the SAFT and by whi...

The thermal equation of states for fcc iridium (Ir) is obtained from first-principles molecular dynamics up to 3000 K and 540 GPa. state (EoS) globally fitted a simplified free energy model various parameters are derived. theoretical principal Hugoniot compared with shockwave experiments, where discrepancy suggests formation new Ir phases. A few representative EoS parameters, such as bulk modul...

The special affine Fourier transform (SAFT) is an extended version of the classical and incorporates various signal processing tools which include transforms, fractional transform, linear canonical other related transforms. This paper aims to introduce a novel octonion (O−SAFT) establish several classes uncertainty inequalities for proposed transform. We begin by studying norm split energy cons...

The time and Fourier domain Synthetic Aperture Focusing Technique (SAFT and FSAFT) have been used to improve both sensitivity and lateral resolution of ultrasonic NDT. Following acquisition of signals over the surface of the tested piece, SAFT identifies a defect by summing all the signals within a certain area (the aperture) after giving proper time-delays. FSAFT, although using the same data,...

The synthetic aperture focusing technique (SAFT) has been previously employed to increase the penetration and to extend the depth of focus. This is particularly important in high frequency ultrasonic imaging because dynamic focusing using arrays is not yet possible. However, performance of the SAFT is limited due to its high sidelobes. In this paper, an adaptive weighting technique based on a f...

Polyethylene is the most popular man-made polymer. One way of making polyethylene consists in producing the polymer in the form of grains suspended by a gas flow of olefins (monomers), nitrogen and other hydrocarbons (alkanes). Industrials want to know the solubility of the monomers in the polyethylene grains, as the rate of the polymerization reaction is a direct function of this solubility. T...

The aim of this study was to investigate the effect of a multi-directional soccer-specific fatigue protocol on sprinting kinematics in relation to hamstring injury risk. Nine semi-professional soccer players (Mean +/- SD: Age: 21.3 +/- 2.9 year; Height 185.0 +/- 8.7 cm; Body Mass 81.6 +/- 6.7 kg) completed the SAFT(90); a multi-directional, intermittent 90 min exercise protocol representative o...