Detecting bubble in two-phase flow has been a basic issue in two-phase flow systems. A new method for measuring the frequency of bubble formation is presented in this paper. For this purpose, an electronic device was designed and constructed which works based on a change in intensity of laser beam. For this purpose, continues light beam is embedded just above the needle, which is received by a ...

Shell and Tube heat exchangers are the heat exchangers that are most widely used in industries and for other commercial purposes. There are many techniques that have been utilized to enhance the heat transfer performance of the shell and tube heat exchangers. Air bubble injection is one of the promising and inexpensive techniques that can create turbulence in the fluids resulting in to enhancem...

A modified model has been analytically developed to describe the induction time of an elliptic air bubble in contact with an elliptic hydrophobic oil droplet. The role of hydrophobicity was revealed in the slippage of liquid over the surfaces of bubble and droplet. In this condition, the analytical relationships for pressure distribution and consequently hydrodynamic resistance force through th...

Bubble sensing pdf Bubble-Sensing: A New Paradigm for Binding a Sensing Task to the Physical. seminar on bubble sensing.pdf Bubble-sensing locations to acquire tasks and do the sensing on behalf of the.used in current participatory sensing applications, and assess the threats to user. bubble sensing pdf download The Bubble-sensing model 68, 69 is a hybrid alternative to the purely.Jan 22, 2012....

bubbles in asset prices have fascinated researchers in finance. identify asset bubbles, by circumstances, on the stock market has been a growing number of research theoretical and empirical. on a theoretical level, it was assumed that the price dynamics reflect irrational behavior of economic agents and, therefore, should be excluded from a deal with the truly rational economic agents burmeiste...

This study investigates whether the COVID-19 pandemic has caused asset price bubbles in stock and oil markets United States Malaysia. More specifically, seeks to detect onset end of possible speculative their causes these markets. It also examines existence a contagion effect between during Covid-19 pandemic. To achieve objectives, used Generalized SADF (GSADF) developed by Phillips et al. (201...

Bubbles in asset prices have fascinated researchers in finance. Identify asset bubbles, by circumstances, on the stock market has been a growing number of research theoretical and empirical. On a theoretical level, it was assumed that the price dynamics reflect irrational behavior of economic agents and, therefore, should be excluded from a deal with the truly rational economic agents Burmeiste...

In large scale parallel systems, storing memory images with checkpointing will involve massive amounts of concentrated I/O from many nodes, resulting in considerable execution overhead. For user-level checkpointing, overhead reduction usually involves both spatial, i.e., reducing the amount of checkpoint data, and temporal, i.e., spreading out I/O by checkpointing data as soon as their values b...

Main result. It is well known that of all surfaces surrounding an area with a given volume V, the sphere has the smallest area. This result explains, e.g., why a soap bubble tends to become a sphere. More than a hundred years ago, the Belgian physicist J. Plateaux asked a similar question: what is the least area surface enclosing two equal volumes? Physical experiments with bubbles seem to indi...