نتایج جستجو برای: binary hydrocarbon mixture
تعداد نتایج: 227742 فیلتر نتایج به سال:
The phase diagram of a polydisperse mixture of uniaxial rodlike and platelike hard parallelepipeds is determined for aspect ratios kappa=5 and 15. All particles have equal volume, and polydispersity is introduced in a highly symmetric way. The corresponding binary mixture is known to have a biaxial phase for kappa=15, but to be unstable against demixing into two uniaxial nematics for kappa=5. T...
– We report the results of an experimental investigation of segregation in a binary mixture of dry particles subjected to horizontal oscillatory excitation. The thin layer of particles was driven by the stick-slip frictional interaction with the surface of a horizontal tray. As the packing fraction of the mixture was increased, the evolution of distinct phases was observed. We identified them a...
We present the results of an experimental study of patterned segregation in a horizontally shaken shallow layer of a binary mixture of dry particles. As the compacity, C, of the mixture was increased, the evolution of three distinct phases was observed. We classify them as binary gas, segregation liquid and segregation crystal phases using macroscopic and microscopic measures. The binary gas to...
Surprising weak assembly behavior has lately been found in binary aqueous solvents containing antagonistic salt. The underlying mechanism is still under debate, particularly the role of ion size asymmetry. Here we use small-angle X-ray scattering to study the effect of ion size asymmetry on the mesoscale ordering in a binary solvent composed of water and 2,6-dimethylpyridine with added symmetri...
This paper addresses the internal heat integration to the pressure-swing distillation process used in the separation of binary azeotrope mixture. A general procedure is suggested and illustrated through the separation of an binary mixture, which forms pressure-sensitive minimum-boiling azeotropes. Comparisons are made between the conventional and the internally heat integration processes. It is...
We test the application of Kobayashi–McMillan theory for the solutes ortho-, metaand para-dichlorobenzene in a binary mixture of 6OCB/8OCB in which both high temperature nematic and low temperature reentrant nematic phases exist. Proton NMR spectra of these solutes are analyzed to give two independent order parameters from which the solute smectic potential can be parametrized. The derived smec...
2014 In critical wetting phenomena, the situation of a heavier liquid residing on top of lighter liquid is observed. The consequences of the Rayleigh-Taylor mode of instability in the semicritical wetting layer in a binary liquid mixture are investigated. We also report experimental observations in support of our theory, in the critical binary liquid mixture cyclohexane + acetonitrile. J. Physi...
1. A multivariate continuous model In this section, we provide the following concrete example that satisfies all the assumptions of Theorems 3 and 5 in our manuscript. Let yik be the response at time k for the i th subject from N(μik = β0 + xikβ1, 1), k = 1, . . . , T = 3, i = 1, . . . , n = 50. Let yi = (yi1, · · · , yiT ) . The true value of (β0, β1) is (1, -1). Covariates xik’s are iid rando...
The same relationship holds for the interfacial tension o-i at the consolute critical point (the critical point for phase separation) of a binary fluid mixture. Up to now no rigorous theory links the interfacial tension to properties of the bulk system. However, a phenomenological approach which should be valid in the vicinity of the critical point has been developed by Fisk and Widom. 2 Accord...
In Hard Disk Drives (HDD), it is necessary to decrease the Flying Height (FH) between the head and the disk (currently, FH is around 3-5 nm) so as to increase recording densities. Retaining the solid lubricant has become a difficult proposition owing to intermittent contact between the surfaces. ZTMD and Z are used as solid lubricant to lubricate these interfaces. In this paper, the behavior of...
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