Elongated bubbles which are constrained by the walls of a pipe are commonly known as Taylor bubbles. Taylor bubbles are prevalent in industrial gas-liquid flow, where they are commonly found in buoyancy driven fermenters, the production and transportation of hydrocarbons in the oil and gas industry, the boiling and condensing process in thermal power plants, and the emergency cooling of nuclear...

We report 269 mid-infrared bubbles within 10 • of the Galactic center from visual inspection of the Spitzer GLIMPSE II Legacy Science program images. The main results of this study are as follows. The surface density of bubbles is ∼5 per square degree or about three times that detected in longitudes |l| =10 • to 65 • because the inner 10 • of longitude were more thoroughly searched for small bu...

t his paper investigates the existence of possible spillover effects among four main asset markets namely foreign exchange, stock, gold, and housing markets in iran from 2002:03 to 2015:06. for this purpose, we have exploited sigma-point kalman filter (spkf) to extract the bubble component of assets prices in the aforementioned markets. then, in order to analyze the price bubbles spillover amon...

Basaltic activity is the most common class of volcanism on Earth, characterized by magmas of sufficiently low viscosities such that bubbles can move independently of the melt. Following exsolution, spherical bubbles can then expand and/or coalesce to generate larger bubbles of spherical-cap or Taylor bubble (slug) morphologies. Puffing and strombolian explosive activity are driven by the bursti...

OBJECTIVE Device- or technique-related air embolism is a drawback of various neuro-endovascular procedures. Detachable aneurysm embolization coils can be sources of such air bubbles. We therefore assessed the formation of air bubbles during in vitro delivery of various detachable coils. MATERIALS AND METHODS A closed circuit simulating a typical endovascular coiling procedure was primed with ...

Evidence shows that asset price bubbles typically precede financial crises and financial crises are accompanied by the collapse of bubbles. In addition, stock market booms and busts are typically associated with credit market booms and busts. The recent US housing and stock market bubbles and the subsequent Great Recession that began in late 2007 provide an example. The stock market booms in th...

We present a detailed statistical study of massive star formation in the environment of 322 Spitzer mid-infrared bubbles by using the RMS survey for massive Young Stellar Objects (YSOs). Using a combination of simple surface density plots and a more sophisticated angular cross-correlation function analysis we show that there is a statistically significant overdensity of RMS YSOs towards the bub...

Topologically nontrivial nanowhirls, called magnetic skyrmions, are often considered attractive for spintronic applications like racetrack data storage devices. However, skyrmions do not move parallel to applied currents and typically coexist with other nano-objects, making the realization of such concepts difficult. Herein we consider materials an anisotropic Dzyaloshinskii-Moriya interaction,...