Building on our previous results (Ref. [4]), we study D-brane/string prototypes in weakly coupled (3+1)-dimensional supersymmetric field theory engineered to support (2+1)-dimensional domain walls, " non-Abelian " strings and various junctions. Our main but not exclusive task is the study of localization of non-Abelian gauge fields on the walls. The model we work with is N = 2 QCD, with the gau...

The vapor deposition of open-networked carbon nanostructures and carbon nanotubes (CNTs)-reinforced composites have been developed and studied parametrically. Carbon nanostructures, including nano-tubes, nano-foams, nanoparticles, and nano-walls, have been deposited on catalyst-assisted substrates using microwave plasma electron cyclotron resonance-chemical vapor deposition (ECR-CVD) system at ...

   Electrochemical performance of binary and ternary oxides composed of Ni, Co and Cu produced over a 3-dimensional substrate of vertically aligned carbon nano-tubes (VACNT) as electrodes for aqueous energy sources, is reported and compared in this paper. VACNTs were fabricated inside a DC-plasma enhanced chemical vapor deposition chamber and composite materials fabricated by thermal decomp...

The structural feasibility of using a pultrusion carbon-fibre-reinforced polymers (CFRP) for the lightweight design mast overhead line railway electrification was investigated and simulated. Material characterisation undertaken three-point bending finite element analysis to identify orthotropic properties pultruded tubes designed composite electrification. An innovative proposed verified simula...

in this paper, analysis of fluid flow and heat transfer over the bank of tubes is considered. k-ω sst model is applied for simulation of turbulent flow. in this paper, the improvement of efficiency of a bundle of circular tubes by changing the shape of the cross section of one row of the pipes to the elliptical cross section as an innovative plan is considered. as know, friction factor in turbu...

background: failures such as marginal discoloration and composite chipping are still the problems of tooth-colored restorations on the substrate of enamel and porcelain, which some of these problems are consequently as a result of failures in the bonding layer. using fi lled resin has been recently introduced to increase the bond strength of this layer. the aim of this study was to compare the ...

The large difference between in-plane and out-of-plane mechanical properties limits the application of traditional composite honeycombs in submersibles. In this work, carbon fiber tube reinforced polymer (CTPC) which have lightweight characteristic high hydrostatic strength is designed manufactured. combination epoxy resin inhibits buckling failure improves bearing capacity tube. Resin binds tu...

Concrete-filled double skin structural members, comprising of two metal tubes and concrete infill between them, have been gaining popularity in engineering because their high strength, large stiffness, good ductility easy maintenance. The use aluminium these members can further enhance performance, as alloy offers lightweight corrosion resistance. This study presents experimental numerical inve...

This paper describes the experimental and numerical study on axial compressive behaviour of circular-in-circular concrete-filled double-skin steel tube (CFDST) stub columns with large void ratio. Nine specimens various ratio (Rv), diameter-to-thickness outer (Do/to) strength concrete (fcu) were tested under compression. The failure patterns, load versus displacement (strain) relationship, ultim...