In the present work, we develop a predictive corresponding-states correlation for the binary interaction parameters of systems composed of hydrocarbons (HC), up to C10, with CO2 and H2S. Experimental data were collected from the literature for 12 HC/CO2 systems (1017 data points for 90 isotherms), 7 HC/H2S systems (293 data points for 27 isotherms), and the CO2/H2S systems (61 data points for 1...

Vascular disease Vascular disease has played an increasingly important role in the field of amputa t ion . Atherosclerosis is widespread in Nor the rn Europe , N o r t h America and elsewhere in the world and several publications (Hansson, 1965 and Robinson, 1976) demonstrate that over 80 per cent of pr imary amputa t ions are now performed on patients with vascular disease and this despite a n...

The shape of the working fluid’s temperature-entropy saturation boundary has a strong influence, not only on the process parameters and efficiency of the Organic Rankine Cycle, but also on the design (the layout) of the equipment. In this paper, working fluids are modelled by the Redlich-Kwong equation of state. It is demonstrated that a limiting isochoric heat capacity might exist between dry ...

j1 Yu Zheng MEng, PhD Associate Professor, Department of Civil Engineering, Dongguan University of Technology, Dongguan, PR China j2 Des Robinson PhD, MRAeS Senior Lecturer, School of Planning, Architecture and Civil Engineering, Queen’s University of Belfast, Belfast, UK j3 Su Taylor PhD, MICE Reader in Structural Engineering, School of Planning, Architecture and Civil Engineering, Queen’s Uni...

This work studies two binary mixtures of R1243zf + R1234yf and R245cb which can be possibly used as a long-term alternative refrigerant for heat pumps. We present critical property (critical temperature, pressure, density) vapor liquid equilibrium (VLE) binaries. The maximum extended uncertainties (k=2) are estimated U(T) = 0.21 K, U(p) 0.048 MPa, U(ρ) 6.4 kg/m3 measurement, 0.06 K 0.015 MPa bu...

In high-pressure dynamic thermodynamic processes, the pressure is much higher than the air critical pressure, and the temperature can deviate significantly from the Boyle temperature. In such situations, the thermo-physical properties and pneumatic performance can’t be described accurately by the ideal gas law. This paper proposes an approach to evaluate the pneumatic performance of a high-pres...

In this communication, a thermodynamic model is presented to predict the dissociation conditions of structure H (sH) clathrate hydrates with methane as help gas. This approach is an extension of the Klauda and Sandler fugacity model (2000) for prediction of phase boundaries of sI and sII clathrate hydrates. The phase behavior of the water and hydrocarbon system is modeled using the Peng-Robinso...

The critical properties of a solute are required for modeling of the solubility by the equation of state. For many compounds, the critical properties are not available. So, group contribution method is utilized as a common method to estimate these properties. But, it leads to the consecutive errors in calculations of the solubility modeling. In this study, Soave-Redlish-Kowang (SRK) and Peng-Ro...

Background: Matrix MetalloProteinases (MMPs) degrade extracellular matrix components to provide normal remodeling and contribute to pathological tissue destruction and cell migration in endometriosis. It is accepted that MMPs are resistant to suppression by progesterone in endometriotic tissues. The physiological effects of progesterone are mediated by its two progesterone receptor (PR) isoform...