This paper tests for speculative bubbles in the medieval English property market based on a unique hand-collected dataset from feet of fines spanning fourteenth and fifteenth centuries. We focus asset types where there are sufficiently large numbers transactions each year to make long reliable run information, we transform this into annual time-series prices. employ regime switching model that ...

The study of bubble dynamics, especially the interaction of bubbles, has drawn considerable attention due to its various applications in engineering and science. Meanwhile, the study of the oscillation effect of a bubble on the emitted pressure wave of another bubble in an acoustic field which has less been investigated. This issue is investigated in the present study using the coupling of Kell...

We study the rheological behavior of mixtures of foams and pastes, which can be described as suspensions of bubbles in yield stress fluids. Model systems are designed by mixing monodisperse aqueous foams and concentrated emulsions. The elastic modulus of the bubble suspensions is found to depend on the elastic capillary number Ca G , defined as the ratio of the paste elastic modulus to the bubb...

purpose: to investigate the results of deep lamellar keratoplasty (dlk) by big bubble method with using shifting bubble sign in patients suffering from keratoconus or corneal opacity methods: in this prospective interventional clinical trial, 20 eyes of 18 patients (10 males and 8 females) who underwent dlk by big bubble method using shifting bubble sign were investigated. mean age of cases wer...

– The persistent decay of bubble clusters in coarsening two-dimensional soap froths is measured experimentally as a function of cluster volume fraction. A dramatically stronger decay is observed in comparison to soap froth models and to measurements and calculations of persistence in other systems. The fraction of individual bubbles that contain any persistent area also decays, implying signifi...

In present paper acombination of three-dimensional isothermal and two-dimensional non-isothermal Lattice Boltzmann Method have been used to simulate the motion of bubble and effect of wetting properties of the surface on bubble separation. By combining these models, three-dimensional model has been used in two-dimension for decreasing the computational cost. Firstly, it has been ensured that th...

Chemical enhanced oil recovery (EOR) methods are alternatives to increase production in mature reservoirs. However, the presence of EOR chemicals produced water may impact separation gas-water systems platforms. The present work aims evaluate polymers, surfactants, inorganic salts, and their interactions on gas holdup a 32.1-cm-diameter semi-batch bubble column over range superficial velocities...

The physical absorption has been experimentally investigated in a bubble column for to determination of volumetric mass transfer coefficients referred to the liquid phase, kLa, and quantify the effect of the viscosity of the absorbent solution on the same, operating in continuous and batch regime with respect to the liquid phase. The variables studied in the process have been the physical prope...