This study investigates the heat transfer performance of a novel ZA27 metal foam exchanger. An open-celled is combined with thin-walled copper tube in single-step casting process. The between two separated water streams flowing through and foam, respectively, measured compared to an equivalent shell exchanger arrangement. Heat enhancement up 71% rate exceeding 30 kW are observed attributed incr...

The In2S3 thin film is prepared using sulfurate method under a vacuum in a sealed tube of amorphous indium thin film. The later film is pre-deposited on glass with thermal evaporation. We have studied the effect of the temperature and the annealing time on the structural and morphological properties In2S3 thin films. The X-ray diffraction (XRD) shows a good crystallinity found until the anneali...

Motivated by recent Transition Region and Coronal Explorer (TRACE) observations of damped oscillations in coronal loops, we consider analytically the motion of an inhomogeneous coronal magnetic tube of radius a in a zeroplasma. An initially perturbed tube may vibrate in its kink mode of oscillation, but those vibrations are damped. The damping is due to resonant absorption, acting in the inhomo...

It has been documented that AE signals propagate in thin plates as extensional and flexural plate modes. This was demonstrated using simulated AE sources (pencil lead breaks) by Gorman [1] on thin aluminum and gr/ep composite plates and by Gorman and Prosser [2] on thin aluminum plates. A typical signal from a pencil lead break source which identifies these two modes is shown in Figure 1. AE si...

It consists of a (i) glass tube about \ inch in cross section and 8 inches to 9 inches in length slightly bent at a distance of about 1 inch from one open end. This end of the tube is closed by a piece of thin rubber (which may be made from a piece of torn rubber glove) which is stretched and fastened tight with silk thread at the bend of the tube. (?) Swab?a piece of stout copper wire and a pi...

MATERIALS AND METHODS: Using exsomatized cadaveric heads, traditional axial scanning, and helical scanning were performed with different detector collimations. Helical scans of the same scan region were then acquired by using the determined optimal detector collimation and various tube voltages, whereas other scan parameters remained fixed. Next, the scans were repeated by using various tube cu...

In accelerators with very short bunches, such as is envisioned in the undulator region of the Linac Coherent Light Source (LCLS)[1], the wakefield due to the roughness of the beam-tube walls can have important implications on the required smoothness and minimum radius allowed for the beam tube. Of two theories of roughness impedance, one yields an almost purely inductive impedance[2], the other...

Formation of the ventricular system begins at the time the neural groove closes to form a neural tube. Fluid is present within the tube, even before the choroid plexus anlage appears. This fluid serves as a structural support for the tube, as well as a pathway for diffusion of metabolites prior to the formation of blood vessels. In the small, thin-walled fetal brain, fluid movement is character...

The external morphology and internal structure of the male sexual tube of the hermit crab Micropagurus acantholepis, a member of the family Paguridae from Australian waters, is described in detail using histological thick sectioning and scanning and transmission electron microscopy techniques. This is the first in-depth study of a sexual tube in the Paguroidea, a group where a remarkable number...

The eddy-current losses in a simplified model of the SIS100 dipole magnet (Fig. 1a) comprising the elliptical beam tube are calculated. The standard 3D Finite Element (FE) formulation is augmented by a shell element representation of the thin beam tube. Using this approach, the mesh construction can be restricted to the beam tube surface and the outer parts, avoiding the construction of element...