A mathematical model describing dynamics of the cluster of gas bubbles in an acoustic field is presented. According to this model a cluster is considered as a large drop with microbubbles inside. The proposed model is used as a basis (1) for an analytical study of small bubble oscillations in mono- and polydisperse clusters and (2) for numerical investigations of nonlinear bubble oscillations a...

The hydrogen (H) spillover phenomenon has attracted considerable attention in the catalysis field. Many researchers have focused on the phenomenon itself, as well as its applications for advanced catalytic systems. In particular, H spillover on non-reducible materials, such as alumina, silica, and zeolites, is a controversial issue owing to the lack of understanding regarding its mechanistic pr...

With the success of feedforward techniques for active noise control, feedback control researchers have begun to explore the relationship between these two control paradigms. The goal of this paper is to further investigate this relationship by means of the classical Bode integral constraint on achievable performance. This constraint provides insight into the phenomenon of spillover which we def...

BACKGROUND Despite the widespread use of tyramine as a pharmacological tool to assess the effects of norepinephrine release from sympathetic nerve terminals, its vascular effects are not adequately characterized. In particular, previous results indicate that intravenous tyramine produces little if any systemic vasoconstriction, suggesting that tyramine does not cause significant norepinephrine ...

In this study, a model of Bayesian Dynamic Stochastic General Equilibrium (DSGE) from Real Business Cycles (RBC) approach with the aim of identifying the factors shaping price bubbles of Tehran Stock Exchange (TSE) was specified. The above-mentioned model was conducted in two scenarios. In the first scenario, the baseline model with sentiment shock was examined. In this model, stock price bubbl...

In this study, at the first stage, the rupture criterion of bubbles wall in Aluminum metal foam liquid was investigated by using Lattice Boltzmann. The two phases modeling were accomplished by using a modified Shan-Chen model. This model was run for several bubbles in A356+3wt.%SiC melt system. Then, bubbles morphologies (virtual metallographic) for A356+3wt.%SiC foams were simulated. Results s...

Bakery products such as breads are characterized by a typical porous structure and a high specific volume. To obtain such a porous structure, air bubbles have to be incorporated during a mixing or blending step. Gas retention and final volume of the baked good depend, therefore, to a large extent on how fast these bubbles disappear again by one of the following processes: Buoyancy is the proces...

My research on bubbles started with my book “Asymmetric Information: Bubbles, Crashes, Technical Analysis and Herding” (Oxford University Press, 2001). The book surveys and critiques the literature on bubbles and herding in settings in which different investors hold different information. One conclusion of the book is that it is difficult to obtain bubbles in models in which all market particip...

My research on bubbles started with my book “Asymmetric Information: Bubbles, Crashes, Technical Analysis and Herding” (Oxford University Press, 2001). The book surveys and critiques the literature on bubbles and herding in settings in which different investors hold different information. One conclusion of the book is that it is difficult to obtain bubbles in models in which all market particip...