On dimensional grounds, however, it is clear that a string is not really capable of fully representing the case of an arbitrarily narrow tube. In particular, the innocent looking magnetic flux string configuration eq.(1) is apparently sourceless. To keep track of the source, one should consider a magnetic flux tube of finite radius, and let a surface current constitute the source. This way, to ...

The present work is focused on the numerical analysis of forced convection in curved tubes. The study was performed by integrating the continuity, momentum and energy equations within Comsol Multiphysics 4.2a environment. The analysis was carried out under the assumptions of incompressible Newtonian, constant properties fluid and of periodically fully developed laminar flow. For the thermal pro...

An ultrasonic transmission technique is described which images the velocity variation within metal parts. The arrival time of the first ultrasonic pulse to traverse the object is detected and displayed as a gray scale on a cathode ray tube while the part is being scannerJ hori:tontally and vertically. The velocity variation imaged within severa 1 cast turbine parts will be shown. ihe system can...

We present an analysis of the accuracy of the lattice Boltzmann BGK (LBGK) method in simulating pulsatile blood flow in a model of the Human Abdominal Aorta. The flow is driven by a systolic pressure cycle. As a benchmark, we consider fully developed pulsatile flow in a straight tube. We compare velocity profiles and shear stress to the analytical Womersley solutions. The accuracy of the bounce...

In the correction of dental Class III molar relationship in skeletal Class II patients, uprighting of the mandibular posterior segments without opening the mandible is an important treatment objective. In the case reported herein, a C-tube miniplate fixed to the lower labial symphysis and connected with a nickel-titanium reverse-curved archwire provided effective uprighting of the lower molars,...

We consider fluting oscillations in a thin straight expanding magnetic flux tube the presence of background flow. The is divided into core region that wrapped transitional region, where damping takes place. method multiple scales used for derivation system governing equations. This applicable to study both standing and propagating waves. Furthermore, equations obtained tubes with sharp boundary...

– We propose new polymer models for Monte Carlo simulation and apply them to a polymer chain confined in a relatively thin box which has both curved and flat sides, and show that either an ideal or an excluded-volume chain spends more time in the curved region than in the flat region. The ratio of the probability of finding a chain in the curved region and in flat region increases exponentially...

We read with interest the recent article of Almarakbi et al1 regarding the use of an additional conduit to facilitate tracheal intubation with GlideScope videolaryngoscope (GSVL) in patients with a normal airway. They showed that compared with the standard intubation procedure with the GSVL, this modified technique made the passage of the tracheal tube easier and intubation time shorter, withou...