Active matter is not only relevant to living and diverse nonequilibrium systems, but also constitutes a fertile ground for novel physics. Indeed, dynamic renormalization group (DRG) analyses have uncovered many new universality classes (UCs) in polar active fluids (PAFs)---an archetype of systems. However, due the inherent technical difficulties DRG methodology, almost all previous studies been...

in this paper, the vapor-liquid equilibrium (vle) properties of polar and nonpolar fluids are modeled by the use of a statistically-based equation of state (eos). the equation of state used in this work is that of ihm-song-mason (ism) eos. an alternative approach is to revise the isothermal integration on liquid. in this respect, a temperature-dependent revision factor b (t) is introduced to th...

A petroleum fluid can be di®ided into three types of species: asphaltenes, resins, and oils. Asphaltenes and resins are polar, while the rest of the so-called oils are either nonpolar or mildly polar. The interaction among these species strongly affect asphaltene precipitation from petroleum fluids. Different measuring methods for asphaltenes in a petroleum fluid gi®e similar results, but diffe...

By taking inspiration from the food industry, an assay was investigated as a potential screening tool to test efficiency of new phenolic antioxidants. The method based on spectrophotometric measurement stable free radical 1,1-diphenyl-2-picryl hydrazyl (DPPH) which, in its form, has absorbance maxima at 515 nm. disappearance this band, upon reaction with antioxidant, monitored reveal kinetic pa...

Active fluids and growing interfaces are two well-studied but very different non-equilibrium systems. Each exhibits non-equilibrium behaviour distinct from that of their equilibrium counterparts. Here we demonstrate a surprising connection between these two: the ordered phase of incompressible polar active fluids in two spatial dimensions without momentum conservation, and growing one-dimension...

It is well documented in the modem literature that the conventional laws of capillarity such as Laplace, Kelvin, and Young-Dupre equations are not adequate when applied to fluids confined by particulate and porous materials. Specifics of interactions of fluids with solid surfaces at the nanoscale are of special engineering importance in view of recent discovery of carbon nanotubes and rapidly g...

In Pa r t I (Deeds and van Olphen, 1961) pycnometric da ta on expanding clays in water and in other displacement fluids were analyzed in terms of inaccessible void space within aggregates and of possible density anomalies of the adsorbed fraction of the displacement fluids. Fur ther details of this work are reported, and the consequences for the interpretat ion of core analysis da ta are discus...

Perturbations of rotating relativistic stars can be classified by their behavior under parity. For axial perturbations (r-modes), initial data with negative canonical energy is found with angular dependence e for all values of m ≥ 2 and for arbitrarily slow rotation. This implies instability (or marginal stability) of such perturbations for rotating perfect fluids. This low m-instability is str...

In a previous study [Kiselev, S.B., Ely, J.F., 2003. Generalized corresponding states model for bulk and interfacial properties of pure fluids and fluid mixtures. Journal of Chemical Physics 119(16), 8645–8662] we developed a formulation of the generalized corresponding states (GCS) model which incorporated critical region non-analytic behavior via a parametric crossover function. The parametri...

For the last few years, molten salt nanomaterials have attracted many scientists for their enhanced specific heat by doping a minute concentration of nanoparticles (up to 1% by weight). Likewise, enhancing the specific heat of liquid media is important in many aspects of engineering such as engine oil, coolant, and lubricant. However, such enhancement in specific heat was only observed for molt...