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Binary system
About: Binary system is a research topic. Over the lifetime, 5788 publications have been published within this topic receiving 97882 citations.
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TL;DR: In this article, a binary mixture of ethyl valerate and hexyl acetate with 1-pentanol and 1-hexanol was measured at three different temperatures (293.15, 303.15 and 313.15 K) and at atmospheric pressure.
Abstract: Density and viscosity for a binary mixture of ethyl valerate and hexyl acetate with 1-pentanol and 1-hexanol were measured in this experiment at three different temperatures (293.15, 303.15, and 313.15 K) and at atmospheric pressure. The measurements were carried out over the whole range of composition. Density values were used in the determination of the excess molar volume, VE, and the viscosity deviations, ΔηL. The latter were fitted to the Redlich−Kister polynomial equation.
39 citations
TL;DR: In this article, the authors measured the viscosity of the binary system ethanol+n-heptane with a falling-body viscometer for seven compositions as well as for the pure compounds in the temperature range 293.15-353.15 K and up to 100MPa with an experimental uncertainty of ±2%.
39 citations
TL;DR: In this article, the authors measured the solubility and liquid saturated properties (density and viscosity) when a liquid hydrocarbon (decane, tetradecane and their mixtures) was saturated with CO2.
39 citations
TL;DR: In this article, a thermodynamic evaluation of the ternary Bi-Cu-O system has been made and a set of parameters consistently describing the system at 1 bar total pressure has been determined.
Abstract: A thermodynamic evaluation of the ternary Bi-Cu-O system has been made and a set of parameters consistently describing the system at 1 bar total pressure has been determined. The ternary system contains a liquid phase which is continuous at high temperature and separates into a metal liquid and an oxide liquid at low temperature and the ternary compound Bi2CuO4 in addition to the binary compounds. Concentration/temperature diagrams are given for the Bi2O3-CuOx system at oxygen partial pressures of 1, 0.21 and 10−5 bar, as well as a potential diagram. Selected isothermal sections at 1100 and 1473 K are also presented. Available experimental data are rather limited and often show a relatively large scatter, but nevertheless make it possible to determine a sufficient set of thermodynamic parameters.
39 citations
TL;DR: In this paper, a lower bound q min = 0.094-0.109 for overcontact degree f = 0-1 is obtained under the assumption that stellar radii are fixed and independent.
Abstract: When the total angular momentum of a binary system J tot = J orb + J spin is at a certain critical (minimum) value, a tidal instability occurs which eventually forces the stars to merge into a single, rapidly rotating object. The instability occurs when J orb = 3J spin , which in the case of contact binaries corresponds to a minimum mass ratio q mm ≈ 0.071-0.078. The minimum mass ratio is obtained under the assumption that stellar radii are fixed and independent. This is not the case with contact binaries where, according to the Roche model, we have R 2 = R 2 (R 1, a, q). By finding a new criterion for contact binaries, which arises from dJ tot = 0, and assuming k 2 1 ≠ k 2 2 for the component's dimensionless gyration radii, a theoretical lower limit q min = 0.094-0.109 for overcontact degree f = 0-1 is obtained.
39 citations