This paper reports on an experimental study of the splitting instability of an air bubble a few centimetres in diameter placed in a sealed cylindrical cell filled with liquid and submitted to vertical oscillations. The response of the bubble to the oscillations is observed with a high-speed video camera. It is found that the bubble dynamics is closely associated with the acceleration of the cel...

the effect of non – pharmacologic pain management methods for venipuncture pain in school aged children in the center for thalassemia in the city of kerman     bageriyan s [1] , borhani f [2] *, abaszadeh a [3]     received: 12 sep, 2012 accepted: 20 nov, 2012   abstract   background & aims : establishing intravenous line (iv catheter) is one of the most common invasive procedures that cause pa...

An investigation was carried out for swirling flow in a rotating pipe with highly viscous fluid containing micro-bubbles experimentally and numerically. In the numerical analysis, bubble trajectory of each bubble was calculated using resultant numerical flow field solutions. From experimental results, with an aid of the numerical simulation, data were obtained for the location of a stagnation p...

Based on the volume of fluid method (VOF), rising characteristics bubbles in near-wall static water are studied. In this study, influence wall motion bubble was studied by changing distance wall, diameter bubble, arrangement and size ratio, etc. The is expressed as average swing amplitude “Z”-shaped when rises. study found that case a single surface has certain rise its degree affected diameter...

The adsorption of ovalbumin (OA) onto the bubble surfaces was studied with various pHs (3.5, 4.6, 6.0 and 8.0) by a continuous foam separation technique. From the value of the saturated surface density of adsorbed OA, the variation of effective diameter (D) of an OA molecule on the bubble surface was estimated for various pHs (3.5, 4.6, 6.0 and 8.0) of the OA solutions, assuming that the cross ...

The temperature will significantly affect the surface tension of a bubble. By suitable control inside and outside spun bubble, can be vanished entirely. This zero-tension phenomenon is extremely helpful in bubble electrospinning process. An experiment designed to study effect on nanofibers diameter, theoretical prediction agrees well with experimental data. paper sheds bright light controlling ...