Three-dimensional, transient simulations of the plasma flow inside different plasma spray torches have been performed using a local thermodynamic equilibrium model solved by a multiscale finite element method. The model describes the dynamics of the arc without any further assumption on the reattachment process except for the use of an artificially high electrical conductivity near the electrod...

A continuous path is one of the most important requirements for solid freeform fabrication (SFF) based on welding. This paper proposes a method for torch path planning applicable to SFF based on welding with an emphasis on minimum human intervention. The suggested approach describes a method based on the subdivision of a two-dimensional (2-D) polygonal section into a set of monotone polygons to...

In this paper, we study physical layer security (PLS) of wireless networks in presence of one eavesdropper. Assume that the channel state information (CSI) of the eavesdropper cannot be obtained at the transmitter, such as CSI can be then estimated through the CSI of a torch node. In addition, a practical issue of wireless nodes, i.e., hardware impairment (HI), is considered at the source node ...

Except for rubella testing, routine TORCH serology screens in prenatal care are of little use. Individual TORCH tests may, however, be useful based on the clinical presentation and history of the patient. The laboratory test of choice for diagnosing cytomegalovirus (CMV) and herpes simplex virus (HSV) infections is culture isolation for the virus. The presence for specific IgM antibodies in neo...

We propose and study game-theoretic versions of independence in graphs. The games are played by two players the aggressor and the defender taking alternate moves on a graph G with tokens located on vertices from an independent set of G. A move of the aggressor is to select a vertex v of G. A move of the defender is to move tokens located on vertices in NG(v) each along one incident edge. The go...

In this study, three-dimensional steady-state non-transferred arc plasma torch was investigated by computational fluid dynamics (CFD) method with user defined function (UDF). Two-equation current density profile was developed to simulate the complex plasma flow inside the torch. The effect of asymmetric distribution of current density (ADCD), particularly the deviation distance (distance betwee...

Auto-ophthalmoscopy, the process by which one's own fundus can be viewed, is an old technique which has been subject to many slight refinements throughout the years. Purkinje described 3 methods by which an impression of the vascular system could be obtained as far back as the 1820s (see von Helmholtz'). The reason why ordinarily we do not perceive the outline of our eyes' vascular system is be...

OBJECTIVE To determine the seroprevalence rates of IgG to common TORCH agents in pregnant Saudi women using indirect enzyme-linked immunosorbent assay. SUBJECTS AND METHODS A total of 926 samples of sera were tested for antibodies to TORCH agents known to cause serious congenital infections: Toxoplasma gondii, rubella, cytomegalovirus (CMV), herpes simplex viruses (HSV-1 and HSV-2), varicella...

Brazing generally require cumbersome apparatus be it induction, vacuum or torch brazing. In torch brazing, metals are joined by using the oxyacetylene cylinder. It thus becomes difficult to carry out brazing at the places where it is not possible to take heavy gas cylinders and brazing apparatuses. So it is tried to figure out the method to carry out brazing at places where conventional brazing...